From e49ef9684897c69169f8f133c77a7f1abbc1a7fe Mon Sep 17 00:00:00 2001 From: ofek Date: Wed, 24 Apr 2024 13:21:08 +0000 Subject: [PATCH] typo 6cff13a7d06ae68f2d05430ee579caf6bfd307b7 --- 1.9/history/hatch/index.html | 2 +- 1.9/search/search_index.json | 2 +- latest/history/hatch/index.html | 2 +- latest/search/search_index.json | 2 +- 4 files changed, 4 insertions(+), 4 deletions(-) diff --git a/1.9/history/hatch/index.html b/1.9/history/hatch/index.html index a2db6615e..42ed6c508 100644 --- a/1.9/history/hatch/index.html +++ b/1.9/history/hatch/index.html @@ -7,4 +7,4 @@ .gdesc-inner { font-size: 0.75rem; } body[data-md-color-scheme="slate"] .gdesc-inner { background: var(--md-default-bg-color);} body[data-md-color-scheme="slate"] .gslide-title { color: var(--md-default-fg-color);} - body[data-md-color-scheme="slate"] .gslide-desc { color: var(--md-default-fg-color);}
Skip to content

Hatch history

All notable changes to Hatch will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

Unreleased

1.9.6 - 2024-04-24

Fixed:

  • Limit the maximum version of virtualenv due to a backward incompatible change

1.9.4 - 2024-03-12

Fixed:

  • Limit the maximum version of Hatchling in anticipation of backward incompatible changes

1.9.3 - 2024-01-25

Fixed:

  • Fix loading of local plugins to account for newly released versions of a dependency

1.9.2 - 2024-01-21

Fixed:

  • Fix the default token variable name for publishing to PyPI

1.9.1 - 2023-12-25

Fixed:

  • Ensure that the dependency_hash method of the environment interface is called after sync_dependencies for cases where the hash is only known at that point, such as for dependency lockers
  • Only acknowledge the HATCH_PYTHON_VARIANT_* environment variables for Python resolution for supported platforms and architectures
  • Fix Python resolution when there are metadata hooks with unsatisfied dependencies

1.9.0 - 2023-12-19

Changed:

  • Environments prefixed by hatch- are now considered internal and used for special purposes such as configuration for static analysis

Added:

  • Enable docstring formatting by default for static analysis
  • Allow for overriding config of internal environments
  • Concretely state the expected API contract for the environment interface methods find and check_compatibility
  • Upgrade Ruff to 0.1.8
  • Bump the minimum supported version of Hatchling to 1.21.0

Fixed:

  • Ignore a project's Python requirement for environments where the project is not installed
  • When not persisting config for static analysis, properly manage internal settings when Ruff's top level table already exists
  • Ignore compatibility checks when environments have already been created, significantly improving performance of environment usage
  • Properly allow overriding of the path option for the virtual environment type
  • Fix nushell activation on non-Windows systems

1.8.1 - 2023-12-14

Fixed:

  • Fix regression in calling subprocesses with updated PATH
  • Fix automatic installation of environment plugins when running as a standalone binary
  • Change default location of Python installations

1.8.0 - 2023-12-11

Changed:

  • Drop support for Python 3.7
  • The get_build_process method of the environment interface has been removed; plugins should use the new run_builder method instead
  • Remove pyperclip dependency and the --copy flag of the config find command
  • When running the build command all output from builders is now displayed as-is in real time without the stripping of ANSI codes
  • Version information (for Hatch itself) is now derived from Git

Added:

  • Support Python 3.12
  • Add installers and standalone binaries
  • Add the ability to manage Python installations
  • Add fmt command
  • The virtual environment type can now automatically download requested versions of Python that are not installed
  • Add dependency_hash method to the environment interface
  • The state of installed dependencies for environments is saved as metadata so if dependency definitions have not changed then no checking is performed, which can be computationally expensive
  • The build command now supports backends other than Hatchling
  • Allow the use of features for environments when skip-install is enabled
  • The default is now __token__ when prompting for a username for the publish command
  • Add a new run_builder method to the environment interface
  • Bump the minimum supported version of Hatchling to 1.19.0
  • Bump the minimum supported version of click to 8.0.6

Fixed:

  • Fix nushell activation
  • Better handling of flat storage directory hierarchies for the virtual environment type
  • Display useful information when running the version command outside of a project rather than erroring
  • Fix the project metadata command by only capturing stdout from the backend
  • Properly support Google Artifact Registry
  • Fix parsing dependencies for environments when warnings are emitted

1.7.0 - 2023-04-03

Changed:

  • The src-layout project template option is now enabled by default
  • Non-critical output now goes to stderr

Added:

  • Add tool.hatch.env.requires configuration to automatically install dependencies for environment and environment collector plugins
  • Add custom environment collector
  • Improve syncing of dependencies provided through Git direct references
  • Add isolated_data_directory attribute to the environment interface
  • Increase the timeout for and add retries to the index publisher
  • Expand home and environment variables in configured cache and data directories
  • Improve readability of exceptions
  • Update project templates
  • Bump the minimum supported version of Hatchling to 1.14.0

Fixed:

  • Fix displaying the version with the version command when the version is static and build dependencies are unmet
  • Fix build environments for the virtual environment type when storing within a relative path
  • Work around System Integrity Protection on macOS when running commands
  • Allow setuptools metadata migration for projects without setup.py if setup.cfg is present
  • Handle additional edge cases for setuptools metadata migration
  • Support boolean values for the config set command

1.6.3 - 2022-10-24

Fixed:

  • Fix version command when the version is dynamic and build dependencies are unmet

1.6.2 - 2022-10-20

Fixed:

  • Fix getting dynamic metadata from hooks for environments when dependencies are not dynamic

1.6.1 - 2022-10-16

Fixed:

  • Computing the path to the user's home directory now gracefully falls back to ~ when it cannot be determined

1.6.0 - 2022-10-08

Changed:

  • The run_shell_command environment interface method now accepts arbitrary subprocess.Popen keyword arguments. This is not strictly breaking, but will be utilized in upcoming features.
  • The internal directory structure for storing virtual environments is now more nested. This is not breaking, but any local environments will be created anew.

Added:

  • Add project command group to view details about the project like PEP 621 metadata
  • Better support for auto-detection of environments by tools like Visual Studio Code now that the storage directory of virtual environments will be flat if Hatch's configured virtual environment directory resides somewhere within the project root or if it is set to a .virtualenvs directory within the user's home directory
  • Build environments for the virtual environment type are now cached for improved performance
  • Add build_environment_exists method to the environment interface for implementations that cache the build environment
  • Add path option to the virtual environment type
  • Add --initialize-auth flag to the index publisher to allow for the saving of authentication information before publishing
  • Support Bash on Windows for the shell command
  • The setuptools migration script no longer modifies the formatting of existing pyproject.toml configuration
  • Bump the minimum supported version of Hatchling to 1.11.0

Fixed:

  • Environments now respect dynamically defined project dependencies
  • The dep hash and all dep show commands now respect dynamically defined project dependencies
  • The env show, dep hash, and all dep show commands now honor context formatting
  • Fix matrix variable inclusion filtering of the run and env run commands when there are multiple possible variables
  • Build environment compatibility is now checked before use
  • Decreasing verbosity now has no affect on output that should always be displayed
  • Handle more edge cases in the setuptools migration script
  • Environments now respect user defined environment variables for context formatting
  • Update the scripts in the generated test environment template for new projects to reflect the documentation
  • Allow extra-dependencies in environment overrides
  • Depend on packaging explicitly rather than relying on it being a transitive dependency of Hatchling

1.5.0 - 2022-08-28

Added:

  • The index publisher now recognizes repository-specific options
  • Add the --ignore-compat flag to the env run command
  • Setting the HATCH_PYTHON environment variable to self will now force the use of the Python executable Hatch is running on for virtual environment creation

Fixed:

  • Fix the --force-continue flag of the env run command
  • Handle more edge cases in the setuptools migration script

1.4.2 - 2022-08-16

Fixed:

  • Fix check for updating static versions with the version command when metadata hooks are in use

1.4.1 - 2022-08-13

Fixed:

  • Fix non-detached inheritance disabling for environments

1.4.0 - 2022-08-06

Added:

  • The default Python for virtual environments now checks PATH before using the one Hatch is running on
  • Values for environment env-vars now support context formatting
  • Add name override for environments to allow for regular expression matching
  • The index publisher now better supports non-PyPI indices
  • Add certificate options to the index publisher
  • Display waiting text when checking dependencies and removing environments
  • Display help text the first time the shell command is executed
  • Update project templates with Python 3.11 and the latest versions of various GitHub Actions
  • Add support for Almquist (ash) shells
  • Add hyperlink as a dependency for better handling of package index URLs
  • Bump the minimum supported version of virtualenv to 20.16.2
  • Bump the minimum supported version of tomlkit to 0.11.1

Fixed:

  • Acknowledge extra-dependencies for the env show command
  • Fix locating executables within virtual environments on Debian
  • Fix managing the terminal size inside the shell command
  • Fix default code coverage file omission for the src-layout project template option

1.3.1 - 2022-07-11

Fixed:

  • Support -h/--help flag for the run command

1.3.0 - 2022-07-10

Changed:

  • Rename the default publishing plugin from pypi to the more generic index

Added:

  • Support the absence of pyproject.toml files, as is the case for apps and non-Python projects
  • Hide scripts that start with an underscore for the env show command by default
  • Ignoring the exit codes of commands by prefixing with hyphens now works with entire named scripts
  • Add a way to require confirmation for publishing
  • Add --force-continue flag to the env run command
  • Make tracebacks colorful and less verbose
  • When shell configuration has not been defined, attempt to use the current shell based on parent processes before resorting to the defaults
  • The shell name pwsh is now an alias for powershell
  • Remove atomicwrites dependency
  • Relax constraint on userpath dependency
  • Bump the minimum supported version of Hatchling to 1.4.1

Fixed:

  • Keep environments in sync with the dependencies of the selected features
  • Use utf-8 for all files generated for new projects
  • Escape special characters Git may return in the user name when writing generated files for new projects
  • Normalize the package name to lowercase in setuptools migration script
  • Fix parsing of source distributions during publishing

1.2.1 - 2022-05-30

Fixed:

  • Fix handling of top level data_files in setuptools migration script

1.2.0 - 2022-05-22

Changed:

  • The enter_shell environment plugin method now accepts an additional args parameter

Added:

  • Allow context string formatting for environment dependencies
  • Add environment context string formatting fields env_name, env_type, matrix, verbosity, and args
  • Support overriding the default arguments used to spawn shells on non-Windows systems
  • Bump the minimum supported version of Hatchling to 1.3.0

Fixed:

  • Improve setuptools migration script

1.1.2 - 2022-05-20

Fixed:

  • Bump the minimum supported version of Hatchling to 1.2.0
  • Update project metadata to reflect support for Python 3.11

1.1.1 - 2022-05-12

Fixed:

  • Fix setuptools migration script for non-Windows systems

1.1.0 - 2022-05-12

Changed:

  • In order to simplify the implementation of command execution for environment plugins, the run_shell_commands method has been replaced by the singular run_shell_command. A new command_context method has been added to more easily satisfy complex use cases.
  • The finalize_command environment plugin method has been removed in favor of the newly introduced context formatting functionality.

Added:

  • Add context formatting functionality i.e. the ability to insert values into configuration like environment variables and command line arguments
  • Any verbosity for command execution will now always display headers, even for single environments
  • Every executed command is now displayed when running multiple commands or when verbosity is enabled
  • Similar to make, ignore the exit code of executed commands that start with - (a hyphen)
  • Add ability for the --init flag of the new command to automatically migrate setuptools configuration
  • Update project metadata to reflect the adoption by PyPA and production stability

1.0.0 - 2022-04-28

This is the first stable release of Hatch v1, a complete rewrite. Enjoy!

\ No newline at end of file + body[data-md-color-scheme="slate"] .gslide-desc { color: var(--md-default-fg-color);}
Skip to content

Hatch history

All notable changes to Hatch will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

Unreleased

1.9.6 - 2024-04-24

Fixed:

  • Limit the maximum version of virtualenv due to a backward incompatible change
  • Upgrade PyApp to 0.12.0 for binary builds

1.9.4 - 2024-03-12

Fixed:

  • Limit the maximum version of Hatchling in anticipation of backward incompatible changes

1.9.3 - 2024-01-25

Fixed:

  • Fix loading of local plugins to account for newly released versions of a dependency

1.9.2 - 2024-01-21

Fixed:

  • Fix the default token variable name for publishing to PyPI

1.9.1 - 2023-12-25

Fixed:

  • Ensure that the dependency_hash method of the environment interface is called after sync_dependencies for cases where the hash is only known at that point, such as for dependency lockers
  • Only acknowledge the HATCH_PYTHON_VARIANT_* environment variables for Python resolution for supported platforms and architectures
  • Fix Python resolution when there are metadata hooks with unsatisfied dependencies

1.9.0 - 2023-12-19

Changed:

  • Environments prefixed by hatch- are now considered internal and used for special purposes such as configuration for static analysis

Added:

  • Enable docstring formatting by default for static analysis
  • Allow for overriding config of internal environments
  • Concretely state the expected API contract for the environment interface methods find and check_compatibility
  • Upgrade Ruff to 0.1.8
  • Bump the minimum supported version of Hatchling to 1.21.0

Fixed:

  • Ignore a project's Python requirement for environments where the project is not installed
  • When not persisting config for static analysis, properly manage internal settings when Ruff's top level table already exists
  • Ignore compatibility checks when environments have already been created, significantly improving performance of environment usage
  • Properly allow overriding of the path option for the virtual environment type
  • Fix nushell activation on non-Windows systems

1.8.1 - 2023-12-14

Fixed:

  • Fix regression in calling subprocesses with updated PATH
  • Fix automatic installation of environment plugins when running as a standalone binary
  • Change default location of Python installations

1.8.0 - 2023-12-11

Changed:

  • Drop support for Python 3.7
  • The get_build_process method of the environment interface has been removed; plugins should use the new run_builder method instead
  • Remove pyperclip dependency and the --copy flag of the config find command
  • When running the build command all output from builders is now displayed as-is in real time without the stripping of ANSI codes
  • Version information (for Hatch itself) is now derived from Git

Added:

  • Support Python 3.12
  • Add installers and standalone binaries
  • Add the ability to manage Python installations
  • Add fmt command
  • The virtual environment type can now automatically download requested versions of Python that are not installed
  • Add dependency_hash method to the environment interface
  • The state of installed dependencies for environments is saved as metadata so if dependency definitions have not changed then no checking is performed, which can be computationally expensive
  • The build command now supports backends other than Hatchling
  • Allow the use of features for environments when skip-install is enabled
  • The default is now __token__ when prompting for a username for the publish command
  • Add a new run_builder method to the environment interface
  • Bump the minimum supported version of Hatchling to 1.19.0
  • Bump the minimum supported version of click to 8.0.6

Fixed:

  • Fix nushell activation
  • Better handling of flat storage directory hierarchies for the virtual environment type
  • Display useful information when running the version command outside of a project rather than erroring
  • Fix the project metadata command by only capturing stdout from the backend
  • Properly support Google Artifact Registry
  • Fix parsing dependencies for environments when warnings are emitted

1.7.0 - 2023-04-03

Changed:

  • The src-layout project template option is now enabled by default
  • Non-critical output now goes to stderr

Added:

  • Add tool.hatch.env.requires configuration to automatically install dependencies for environment and environment collector plugins
  • Add custom environment collector
  • Improve syncing of dependencies provided through Git direct references
  • Add isolated_data_directory attribute to the environment interface
  • Increase the timeout for and add retries to the index publisher
  • Expand home and environment variables in configured cache and data directories
  • Improve readability of exceptions
  • Update project templates
  • Bump the minimum supported version of Hatchling to 1.14.0

Fixed:

  • Fix displaying the version with the version command when the version is static and build dependencies are unmet
  • Fix build environments for the virtual environment type when storing within a relative path
  • Work around System Integrity Protection on macOS when running commands
  • Allow setuptools metadata migration for projects without setup.py if setup.cfg is present
  • Handle additional edge cases for setuptools metadata migration
  • Support boolean values for the config set command

1.6.3 - 2022-10-24

Fixed:

  • Fix version command when the version is dynamic and build dependencies are unmet

1.6.2 - 2022-10-20

Fixed:

  • Fix getting dynamic metadata from hooks for environments when dependencies are not dynamic

1.6.1 - 2022-10-16

Fixed:

  • Computing the path to the user's home directory now gracefully falls back to ~ when it cannot be determined

1.6.0 - 2022-10-08

Changed:

  • The run_shell_command environment interface method now accepts arbitrary subprocess.Popen keyword arguments. This is not strictly breaking, but will be utilized in upcoming features.
  • The internal directory structure for storing virtual environments is now more nested. This is not breaking, but any local environments will be created anew.

Added:

  • Add project command group to view details about the project like PEP 621 metadata
  • Better support for auto-detection of environments by tools like Visual Studio Code now that the storage directory of virtual environments will be flat if Hatch's configured virtual environment directory resides somewhere within the project root or if it is set to a .virtualenvs directory within the user's home directory
  • Build environments for the virtual environment type are now cached for improved performance
  • Add build_environment_exists method to the environment interface for implementations that cache the build environment
  • Add path option to the virtual environment type
  • Add --initialize-auth flag to the index publisher to allow for the saving of authentication information before publishing
  • Support Bash on Windows for the shell command
  • The setuptools migration script no longer modifies the formatting of existing pyproject.toml configuration
  • Bump the minimum supported version of Hatchling to 1.11.0

Fixed:

  • Environments now respect dynamically defined project dependencies
  • The dep hash and all dep show commands now respect dynamically defined project dependencies
  • The env show, dep hash, and all dep show commands now honor context formatting
  • Fix matrix variable inclusion filtering of the run and env run commands when there are multiple possible variables
  • Build environment compatibility is now checked before use
  • Decreasing verbosity now has no affect on output that should always be displayed
  • Handle more edge cases in the setuptools migration script
  • Environments now respect user defined environment variables for context formatting
  • Update the scripts in the generated test environment template for new projects to reflect the documentation
  • Allow extra-dependencies in environment overrides
  • Depend on packaging explicitly rather than relying on it being a transitive dependency of Hatchling

1.5.0 - 2022-08-28

Added:

  • The index publisher now recognizes repository-specific options
  • Add the --ignore-compat flag to the env run command
  • Setting the HATCH_PYTHON environment variable to self will now force the use of the Python executable Hatch is running on for virtual environment creation

Fixed:

  • Fix the --force-continue flag of the env run command
  • Handle more edge cases in the setuptools migration script

1.4.2 - 2022-08-16

Fixed:

  • Fix check for updating static versions with the version command when metadata hooks are in use

1.4.1 - 2022-08-13

Fixed:

  • Fix non-detached inheritance disabling for environments

1.4.0 - 2022-08-06

Added:

  • The default Python for virtual environments now checks PATH before using the one Hatch is running on
  • Values for environment env-vars now support context formatting
  • Add name override for environments to allow for regular expression matching
  • The index publisher now better supports non-PyPI indices
  • Add certificate options to the index publisher
  • Display waiting text when checking dependencies and removing environments
  • Display help text the first time the shell command is executed
  • Update project templates with Python 3.11 and the latest versions of various GitHub Actions
  • Add support for Almquist (ash) shells
  • Add hyperlink as a dependency for better handling of package index URLs
  • Bump the minimum supported version of virtualenv to 20.16.2
  • Bump the minimum supported version of tomlkit to 0.11.1

Fixed:

  • Acknowledge extra-dependencies for the env show command
  • Fix locating executables within virtual environments on Debian
  • Fix managing the terminal size inside the shell command
  • Fix default code coverage file omission for the src-layout project template option

1.3.1 - 2022-07-11

Fixed:

  • Support -h/--help flag for the run command

1.3.0 - 2022-07-10

Changed:

  • Rename the default publishing plugin from pypi to the more generic index

Added:

  • Support the absence of pyproject.toml files, as is the case for apps and non-Python projects
  • Hide scripts that start with an underscore for the env show command by default
  • Ignoring the exit codes of commands by prefixing with hyphens now works with entire named scripts
  • Add a way to require confirmation for publishing
  • Add --force-continue flag to the env run command
  • Make tracebacks colorful and less verbose
  • When shell configuration has not been defined, attempt to use the current shell based on parent processes before resorting to the defaults
  • The shell name pwsh is now an alias for powershell
  • Remove atomicwrites dependency
  • Relax constraint on userpath dependency
  • Bump the minimum supported version of Hatchling to 1.4.1

Fixed:

  • Keep environments in sync with the dependencies of the selected features
  • Use utf-8 for all files generated for new projects
  • Escape special characters Git may return in the user name when writing generated files for new projects
  • Normalize the package name to lowercase in setuptools migration script
  • Fix parsing of source distributions during publishing

1.2.1 - 2022-05-30

Fixed:

  • Fix handling of top level data_files in setuptools migration script

1.2.0 - 2022-05-22

Changed:

  • The enter_shell environment plugin method now accepts an additional args parameter

Added:

  • Allow context string formatting for environment dependencies
  • Add environment context string formatting fields env_name, env_type, matrix, verbosity, and args
  • Support overriding the default arguments used to spawn shells on non-Windows systems
  • Bump the minimum supported version of Hatchling to 1.3.0

Fixed:

  • Improve setuptools migration script

1.1.2 - 2022-05-20

Fixed:

  • Bump the minimum supported version of Hatchling to 1.2.0
  • Update project metadata to reflect support for Python 3.11

1.1.1 - 2022-05-12

Fixed:

  • Fix setuptools migration script for non-Windows systems

1.1.0 - 2022-05-12

Changed:

  • In order to simplify the implementation of command execution for environment plugins, the run_shell_commands method has been replaced by the singular run_shell_command. A new command_context method has been added to more easily satisfy complex use cases.
  • The finalize_command environment plugin method has been removed in favor of the newly introduced context formatting functionality.

Added:

  • Add context formatting functionality i.e. the ability to insert values into configuration like environment variables and command line arguments
  • Any verbosity for command execution will now always display headers, even for single environments
  • Every executed command is now displayed when running multiple commands or when verbosity is enabled
  • Similar to make, ignore the exit code of executed commands that start with - (a hyphen)
  • Add ability for the --init flag of the new command to automatically migrate setuptools configuration
  • Update project metadata to reflect the adoption by PyPA and production stability

1.0.0 - 2022-04-28

This is the first stable release of Hatch v1, a complete rewrite. Enjoy!

\ No newline at end of file diff --git a/1.9/search/search_index.json b/1.9/search/search_index.json index a9bf78d4e..a74c6a4c4 100644 --- a/1.9/search/search_index.json +++ b/1.9/search/search_index.json @@ -1 +1 @@ -{"config":{"lang":["en"],"separator":"[\\s\\-]+","pipeline":["stopWordFilter"],"fields":{"title":{"boost":1000.0},"text":{"boost":1.0},"tags":{"boost":1000000.0}}},"docs":[{"location":"","title":"Hatch","text":"CI/CD Docs Package Meta

Hatch is a modern, extensible Python project manager. See the Why Hatch? page for more information.

"},{"location":"#license","title":"License","text":"

Hatch is distributed under the terms of the MIT license.

"},{"location":"#navigation","title":"Navigation","text":"

Documentation for specific MAJOR.MINOR versions can be chosen by using the dropdown on the top of every page. The dev version reflects changes that have not yet been released.

Also, desktop readers can use special keyboard shortcuts:

Keys Action Navigate to the \"previous\" page Navigate to the \"next\" page Display the search modal"},{"location":"build/","title":"Builds","text":""},{"location":"build/#configuration","title":"Configuration","text":"

Builds are configured using the tool.hatch.build table. Every target is defined by a section within tool.hatch.build.targets, for example:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.sdist]\nexclude = [\n  \"/.github\",\n  \"/docs\",\n]\n\n[tool.hatch.build.targets.wheel]\npackages = [\"src/foo\"]\n
[build.targets.sdist]\nexclude = [\n  \"/.github\",\n  \"/docs\",\n]\n\n[build.targets.wheel]\npackages = [\"src/foo\"]\n
"},{"location":"build/#building","title":"Building","text":"

Invoking the build command without any arguments will build the sdist and wheel targets:

$ hatch build\n[sdist]\ndist/hatch_demo-1rc0.tar.gz\n\n[wheel]\ndist/hatch_demo-1rc0-py3-none-any.whl\n

To only build specific targets, use the -t/--target option:

$ hatch build -t wheel\n[wheel]\ndist/hatch_demo-1rc0-py3-none-any.whl\n

If the target supports multiple versions, you can specify the exact versions to build by appending a colon followed by the desired versions separated by commas:

$ hatch -v build -t wheel:standard\n[wheel]\nBuilding `wheel` version `standard`\ndist/hatch_demo-1rc0-py3-none-any.whl\n
"},{"location":"build/#packaging-ecosystem","title":"Packaging ecosystem","text":"

Hatch complies with modern Python packaging specs and therefore your projects can be used by other tools with Hatch serving as just the build backend.

So you could use tox as an alternative to Hatch's environment management, or cibuildwheel to distribute packages for every platform, and they both will transparently use Hatch without any extra modification.

"},{"location":"environment/","title":"Environments","text":"

Environments are designed to allow for isolated workspaces for testing, building documentation, or anything else projects need.

Unless an environment is chosen explicitly, Hatch will use the default environment.

"},{"location":"environment/#creation","title":"Creation","text":"

You can create environments by using the env create command. Let's enter the directory of the project we created in the setup phase:

$ hatch env create\nCreating environment: default\nInstalling project in development mode\nSyncing dependencies\n

Tip

You never need to manually create environments as spawning a shell or running commands within one will automatically trigger creation.

"},{"location":"environment/#entering-environments","title":"Entering environments","text":"

You can spawn a shell within an environment by using the shell command.

$ hatch shell\n(hatch-demo) $\n

Now confirm the project has been installed:

(hatch-demo) $ pip show hatch-demo\nName: hatch-demo\nVersion: 0.0.1\n...\n

Finally, see where your environment's Python is located:

(hatch-demo) $ python -c \"import sys;print(sys.executable)\"\n...\n

You can type exit to leave the environment.

"},{"location":"environment/#command-execution","title":"Command execution","text":"

The run command allows you to execute commands in an environment as if you had already entered it. For example, running the following command will output the same path as before:

hatch run python -c \"import sys;print(sys.executable)\"\n
"},{"location":"environment/#scripts","title":"Scripts","text":"

You can also run any scripts that have been defined.

You'll notice that in the pyproject.toml file there are already scripts defined in the default environment. Try running the test command, which invokes pytest with some default arguments:

hatch run test\n

All additional arguments are passed through to that script, so for example if you wanted to see the version of pytest and which plugins are installed you could do:

hatch run test -VV\n
"},{"location":"environment/#dependencies","title":"Dependencies","text":"

Hatch ensures that environments are always compatible with the currently defined project dependencies (if installed and in dev mode) and environment dependencies.

To add cowsay as a dependency, open pyproject.toml and add it to the dependencies array:

pyproject.toml 
[project]\n...\ndependencies = [\n  \"cowsay\"\n]\n

This dependency will be installed the next time you spawn a shell or run a command. For example:

$ hatch run cowsay -t \"Hello, world!\"\nSyncing dependencies\n  _____________\n| Hello, world! |\n  =============\n             \\\n              \\\n                ^__^\n                (oo)\\_______\n                (__)\\       )\\/\\\n                    ||----w |\n                    ||     ||\n

Note

The Syncing dependencies status will display temporarily when Hatch updates environments in response to any dependency changes that you make.

"},{"location":"environment/#selection","title":"Selection","text":"

You can select which environment to enter or run commands in by using the -e/--env root option or by setting the HATCH_ENV environment variable.

The run command allows for more explicit selection by prepending <ENV_NAME>: to commands. For example, if you had the following configuration:

pyproject.toml hatch.toml 
[tool.hatch.envs.docs]\ndependencies = [\n  \"mkdocs\"\n]\n[tool.hatch.envs.docs.scripts]\nbuild = \"mkdocs build --clean --strict\"\nserve = \"mkdocs serve --dev-addr localhost:8000\"\n
[envs.docs]\ndependencies = [\n  \"mkdocs\"\n]\n[envs.docs.scripts]\nbuild = \"mkdocs build --clean --strict\"\nserve = \"mkdocs serve --dev-addr localhost:8000\"\n

you could then serve your documentation by running:

hatch run docs:serve\n

Tip

If you've already entered an environment, commands will target it by default.

"},{"location":"environment/#matrix","title":"Matrix","text":"

Every environment can define its own set of matrices:

pyproject.toml hatch.toml 
[tool.hatch.envs.test]\ndependencies = [\n  \"pytest\"\n]\n\n[[tool.hatch.envs.test.matrix]]\npython = [\"2.7\", \"3.8\"]\nversion = [\"42\", \"3.14\"]\n\n[[tool.hatch.envs.test.matrix]]\npython = [\"3.8\", \"3.9\"]\nversion = [\"9000\"]\nfeatures = [\"foo\", \"bar\"]\n
[envs.test]\ndependencies = [\n  \"pytest\"\n]\n\n[[envs.test.matrix]]\npython = [\"2.7\", \"3.8\"]\nversion = [\"42\", \"3.14\"]\n\n[[envs.test.matrix]]\npython = [\"3.8\", \"3.9\"]\nversion = [\"9000\"]\nfeatures = [\"foo\", \"bar\"]\n

Using the env show command would then display:

$ hatch env show --ascii\n     Standalone\n+---------+---------+\n| Name    | Type    |\n+=========+=========+\n| default | virtual |\n+---------+---------+\n                       Matrices\n+------+---------+---------------------+--------------+\n| Name | Type    | Envs                | Dependencies |\n+======+=========+=====================+==============+\n| test | virtual | test.py2.7-42       | pytest       |\n|      |         | test.py2.7-3.14     |              |\n|      |         | test.py3.8-42       |              |\n|      |         | test.py3.8-3.14     |              |\n|      |         | test.py3.8-9000-foo |              |\n|      |         | test.py3.8-9000-bar |              |\n|      |         | test.py3.9-9000-foo |              |\n|      |         | test.py3.9-9000-bar |              |\n+------+---------+---------------------+--------------+\n
"},{"location":"environment/#removal","title":"Removal","text":"

You can remove a single environment or environment matrix by using the env remove command or all of a project's environments by using the env prune command.

"},{"location":"install/","title":"Installation","text":""},{"location":"install/#installers","title":"Installers","text":"macOSWindows GUI installerCommand line installer
  1. In your browser, download the .pkg file: hatch-1.9.6.pkg
  2. Run your downloaded file and follow the on-screen instructions.
  3. Restart your terminal.

  4. To verify that the shell can find and run the hatch command in your PATH, use the following command.

    $ hatch --version\n1.9.6\n

  1. Download the file using the curl command. The -o option specifies the file name that the downloaded package is written to. In this example, the file is written to hatch-1.9.6.pkg in the current directory.

    curl -o hatch-1.9.6.pkg https://github.com/pypa/hatch/releases/download/hatch-v1.9.6/hatch-1.9.6.pkg\n

  2. Run the standard macOS installer program, specifying the downloaded .pkg file as the source. Use the -pkg parameter to specify the name of the package to install, and the -target / parameter for the drive in which to install the package. The files are installed to /usr/local/hatch, and an entry is created at /etc/paths.d/hatch that instructs shells to add the /usr/local/hatch directory to. You must include sudo on the command to grant write permissions to those folders.

    sudo installer -pkg ./hatch-1.9.6.pkg -target /\n

  3. Restart your terminal.

  4. To verify that the shell can find and run the hatch command in your PATH, use the following command.

    $ hatch --version\n1.9.6\n
GUI installerCommand line installer
  1. In your browser, download one the .msi files:
    • hatch-1.9.6-x64.msi
  2. Run your downloaded file and follow the on-screen instructions.
  3. Restart your terminal.

  4. To verify that the shell can find and run the hatch command in your PATH, use the following command.

    $ hatch --version\n1.9.6\n

  1. Download and run the installer using the standard Windows msiexec program, specifying one of the .msi files as the source. Use the /passive and /i parameters to request an unattended, normal installation.

    x64 
    msiexec /passive /i https://github.com/pypa/hatch/releases/download/hatch-v1.9.6/hatch-1.9.6-x64.msi\n

  2. Restart your terminal.

  3. To verify that the shell can find and run the hatch command in your PATH, use the following command.

    $ hatch --version\n1.9.6\n
"},{"location":"install/#standalone-binaries","title":"Standalone binaries","text":"

After downloading the archive corresponding to your platform and architecture, extract the binary to a directory that is on your PATH and rename to hatch.

LinuxmacOSWindows "},{"location":"install/#pip","title":"pip","text":"

Hatch is available on PyPI and can be installed with pip.

pip install hatch\n

Warning

This method modifies the Python environment in which you choose to install. Consider instead using pipx to avoid dependency conflicts.

"},{"location":"install/#pipx","title":"pipx","text":"

pipx allows for the global installation of Python applications in isolated environments.

pipx install hatch\n
"},{"location":"install/#homebrew","title":"Homebrew","text":"

See the formula for more details.

brew install hatch\n
"},{"location":"install/#conda","title":"Conda","text":"

See the feedstock for more details.

conda install -c conda-forge hatch\n

or with mamba:

mamba install hatch\n

Warning

This method modifies the Conda environment in which you choose to install. Consider instead using pipx or condax to avoid dependency conflicts.

"},{"location":"install/#macports","title":"MacPorts","text":"

See the port for more details.

sudo port install hatch\n
"},{"location":"install/#fedora","title":"Fedora","text":"

The minimum supported version is 37, currently in development as Rawhide.

sudo dnf install hatch\n
"},{"location":"install/#void-linux","title":"Void Linux","text":"
xbps-install hatch\n
"},{"location":"install/#build-system-availability","title":"Build system availability","text":"

Hatchling is Hatch's build backend which you will never need to install manually. See its changelog for version information.

"},{"location":"intro/","title":"Introduction","text":""},{"location":"intro/#setup","title":"Setup","text":"

Projects can be set up for use by Hatch using the new command.

"},{"location":"intro/#new-project","title":"New project","text":"

Let's say you want to create a project named Hatch Demo. You would run:

hatch new \"Hatch Demo\"\n

This would create the following structure in your current working directory:

hatch-demo\n\u251c\u2500\u2500 src\n\u2502   \u2514\u2500\u2500 hatch_demo\n\u2502       \u251c\u2500\u2500 __about__.py\n\u2502       \u2514\u2500\u2500 __init__.py\n\u251c\u2500\u2500 tests\n\u2502   \u2514\u2500\u2500 __init__.py\n\u251c\u2500\u2500 LICENSE.txt\n\u251c\u2500\u2500 README.md\n\u2514\u2500\u2500 pyproject.toml\n

Tip

There are many ways to customize project generation.

"},{"location":"intro/#existing-project","title":"Existing project","text":"

To initialize an existing project, enter the directory containing the project and run the following:

hatch new --init\n

If your project has a setup.py file the command will automatically migrate setuptools configuration for you. Otherwise, this will interactively guide you through the setup process.

"},{"location":"intro/#project-metadata","title":"Project metadata","text":"

Next you'll want to define more of your project's metadata located in the pyproject.toml file. You can specify things like its license, the supported versions of Python, and URLs referring to various parts of your project, like documentation.

"},{"location":"intro/#dependencies","title":"Dependencies","text":"

The last step of the setup process is to define any dependencies that you'd like your project to begin with.

"},{"location":"intro/#configuration","title":"Configuration","text":"

All project-specific configuration recognized by Hatch can be defined in either the pyproject.toml file, or a file named hatch.toml where options are not contained within the tool.hatch table:

pyproject.toml hatch.toml 
[tool.hatch]\noption = \"...\"\n\n[tool.hatch.table1]\noption = \"...\"\n\n[tool.hatch.table2]\noption = \"...\"\n
option = \"...\"\n\n[table1]\noption = \"...\"\n\n[table2]\noption = \"...\"\n

Top level keys in the latter file take precedence when defined in both.

Tip

If you want to make your file more compact, you can use dotted keys, turning the above example into:

pyproject.toml hatch.toml 
[tool.hatch]\noption = \"...\"\ntable1.option = \"...\"\ntable2.option = \"...\"\n
option = \"...\"\ntable1.option = \"...\"\ntable2.option = \"...\"\n
"},{"location":"next-steps/","title":"Next steps","text":""},{"location":"next-steps/#learn-more","title":"Learn more","text":"

At this point you should have a basic understanding of how to use Hatch.

Now you may want to check out advanced configuration for environments or builds, set up your preferred shell, or read more about Hatch's CLI.

After that, check out the Hatch Showcase project to see examples of what is possible.

Finally, if you see a need, feel free to write a plugin for extended functionality.

"},{"location":"next-steps/#community","title":"Community","text":"

For any projects using Hatch, you may add its official badge somewhere prominent like the README.

MarkdownreStructuredText 
[![Hatch project](https://img.shields.io/badge/%F0%9F%A5%9A-Hatch-4051b5.svg)](https://github.com/pypa/hatch)\n
.. image:: https://img.shields.io/badge/%F0%9F%A5%9A-Hatch-4051b5.svg\n   :alt: Hatch project\n   :target: https://github.com/pypa/hatch\n
"},{"location":"publish/","title":"Publishing","text":"

After your project is built, you can distribute it using the publish command.

The -p/--publisher option controls which publisher to use, with the default being index.

"},{"location":"publish/#artifact-selection","title":"Artifact selection","text":"

By default, the dist directory located at the root of your project will be used:

$ hatch publish\ndist/hatch_demo-1rc0-py3-none-any.whl ... success\ndist/hatch_demo-1rc0.tar.gz ... success\n\n[hatch-demo]\nhttps://pypi.org/project/hatch-demo/1rc0/\n

You can instead pass specific paths as arguments:

hatch publish /path/to/artifacts foo-1.tar.gz\n

Only files ending with .whl or .tar.gz will be published.

"},{"location":"publish/#repository","title":"Repository","text":"

You can select the repository with which to upload using the -r/--repo option or by setting the HATCH_INDEX_REPO environment variable.

Rather than specifying the full URL of a repository, you can use a named repository from a publish.index.repos table defined in Hatch's config file:

config.toml 
[publish.index.repos.private]\nurl = \"...\"\n...\n

The following repository names are reserved by Hatch and cannot be overridden:

Name Repository main https://upload.pypi.org/legacy/ test https://test.pypi.org/legacy/

The main repository is used by default.

"},{"location":"publish/#authentication","title":"Authentication","text":"

The first time you publish to a repository you need to authenticate using the -u/--user (environment variable HATCH_INDEX_USER) and -a/--auth (environment variable HATCH_INDEX_AUTH) options. You will be prompted if either option is not provided.

The user that most recently published to the chosen repository is cached, with their credentials saved to the system keyring, so that they will no longer need to provide authentication information.

For automated releasing to PyPI, it is recommended that you use per-project API tokens.

"},{"location":"publish/#confirmation","title":"Confirmation","text":"

You can require a confirmation prompt or use of the -y/--yes flag by setting publishers' disable option to true in either Hatch's config file or project-specific configuration (which takes precedence):

config.toml pyproject.toml hatch.toml 
[publish.index]\ndisable = true\n
[tool.hatch.publish.index]\ndisable = true\n
[publish.index]\ndisable = true\n
"},{"location":"version/","title":"Versioning","text":""},{"location":"version/#configuration","title":"Configuration","text":"

When the version is not statically set, configuration is defined in the tool.hatch.version table. The source option determines the source to use for retrieving and updating the version. The regex source is used by default.

The regex source requires an option path that represents a relative path to a file containing the project's version:

pyproject.toml hatch.toml 
[tool.hatch.version]\npath = \"src/hatch_demo/__about__.py\"\n
[version]\npath = \"src/hatch_demo/__about__.py\"\n

The default pattern looks for a variable named __version__ or VERSION that is set to a string containing the version, optionally prefixed with the lowercase letter v.

If this doesn't reflect how you store the version, you can define a different regular expression using the pattern option:

pyproject.toml hatch.toml 
[tool.hatch.version]\npath = \"pkg/__init__.py\"\npattern = \"BUILD = 'b(?P<version>[^']+)'\"\n
[version]\npath = \"pkg/__init__.py\"\npattern = \"BUILD = 'b(?P<version>[^']+)'\"\n

The pattern must have a named group called version that represents the version.

"},{"location":"version/#display","title":"Display","text":"

Invoking the version command without any arguments will display the current version of the project:

$ hatch version\n0.0.1\n
"},{"location":"version/#updating","title":"Updating","text":"

You can update the version like so:

$ hatch version \"0.1.0\"\nOld: 0.0.1\nNew: 0.1.0\n

The scheme option determines the scheme to use for parsing both the existing and new versions. The standard scheme is used by default, which is based on PEP 440.

Rather than setting the version explicitly, you can select the name of a segment used to increment the version:

$ hatch version minor\nOld: 0.1.0\nNew: 0.2.0\n

You can chain multiple segment updates with a comma. For example, if you wanted to release a preview of your project's first major version, you could do:

$ hatch version major,rc\nOld: 0.2.0\nNew: 1.0.0rc0\n

When you want to release the final version, you would do:

$ hatch version release\nOld: 1.0.0rc0\nNew: 1.0.0\n
"},{"location":"version/#supported-segments","title":"Supported segments","text":"

Here are the supported segments and how they would influence an existing version of 1.0.0:

Segments New version release 1.0.0 major 2.0.0 minor 1.1.0 micropatchfix 1.0.1 aalpha 1.0.0a0 bbeta 1.0.0b0 crcprepreview 1.0.0rc0 rrevpost 1.0.0.post0 dev 1.0.0.dev0"},{"location":"why/","title":"Why Hatch?","text":"

The high level value proposition of Hatch is that if one adopts all functionality then many other tools become unnecessary since there is support for everything one might require. Further, if one chooses to use only specific features then there are still benefits compared to alternatives.

"},{"location":"why/#build-backend","title":"Build backend","text":"

Hatchling, the build backend sister project, has many benefits compared to setuptools. Here we only compare setuptools as that is the one most people are familiar with.

Why not?:

If building extension modules is required then it is recommended that you continue using setuptools, or even other backends that specialize in interfacing with compilers.

"},{"location":"why/#environment-management","title":"Environment management","text":"

Here we compare to both tox and nox. At a high level, there are a few common advantages:

Why not?:

If you are using nox and you wish to migrate, and for some reason you notify sessions, then migration wouldn't be a straight translation but rather you might have to redesign that conditional step.

"},{"location":"why/#python-management","title":"Python management","text":"

Here we compare Python management to that of pyenv.

Why not?:

Currently, Hatch does not allow for the installation of specific patch release versions but rather only uses minor release granularity that tracks the latest patch release. If specific patch releases are important to you then it is best to use an alternative installation mechanism.

"},{"location":"blog/","title":"Blog","text":""},{"location":"blog/2022/10/08/hatch-v160/","title":"Hatch v1.6.0","text":"

Hatch v1.6.0 brings improvements to build environments, better handling of dynamic metadata, and support for tools like Visual Studio Code.

"},{"location":"blog/2022/10/08/hatch-v160/#build-environments","title":"Build environments","text":"

Originally, the environment interface method for providing builder sub-environments was intended to be used in conjunction with some cleanup logic in order to provide a fresh setup every time. However, this is unnecessary in practice because build dependencies rarely change.

Without caching, repeat build environment use is slow which affects the following scenarios:

Now a new environment interface method build_environment_exists is used by Hatch to determine whether or not it has already been created, for implementations that have a caching mechanism.

The virtual environment type now uses this method to cache build environments.

"},{"location":"blog/2022/10/08/hatch-v160/#project-metadata","title":"Project metadata","text":"

Dynamically defined metadata is now supported everywhere, thanks to the new caching of virtual build environments.

A project metadata command is introduced that displays the fully resolved metadata. The output format is JSON unless a field is specified as an argument.

For example, if you checkout a project that is built by Hatch, like FastAPI, and run:

hatch project metadata readme\n

only the readme text will be displayed. If the content is in Markdown, then Rich will render it directly in your terminal:

"},{"location":"blog/2022/10/08/hatch-v160/#virtual-environment-location","title":"Virtual environment location","text":"

The virtual environment type now uses a flat layout for storage in the configured virtual environment directory if the directory resides somewhere within the project root or if it is set to a .virtualenvs directory within the user's home directory.

For example, if you define the following Hatch configuration:

config.toml 
[dirs.env]\nvirtual = \".hatch\"\n

and the following matrix:

pyproject.toml hatch.toml 
[[tool.hatch.envs.test.matrix]]\npython = [\"3.7\", \"3.8\", \"3.9\", \"3.10\", \"3.11\"]\n
[[envs.test.matrix]]\npython = [\"3.7\", \"3.8\", \"3.9\", \"3.10\", \"3.11\"]\n

then locating environments with the following command:

hatch env find test\n

will show that the general directory structure is:

.hatch\n\u251c\u2500\u2500 test.py3.7\n\u251c\u2500\u2500 test.py3.8\n\u251c\u2500\u2500 test.py3.9\n\u251c\u2500\u2500 test.py3.10\n\u2514\u2500\u2500 test.py3.11\n

This flat structure is required for detection of virtual environments by tools like Visual Studio Code and PyCharm.

Additionally, the virtual environment type now supports a path option to specify an explicit path that all inherited environments will share, such as the common .venv.

"},{"location":"blog/2022/10/08/hatch-v160/#migration-script-improvements","title":"Migration script improvements","text":"

The script used to migrate existing projects from setuptools has been improved to handle more edge cases that were encountered in the wild and now no longer modifies the formatting of existing pyproject.toml configuration.

"},{"location":"blog/2022/10/08/hatch-v160/#hatchling","title":"Hatchling","text":"

Hatch now depends on Hatchling v1.11.0, which was also just released.

"},{"location":"blog/2022/10/08/hatch-v160/#environment-version-source","title":"Environment version source","text":"

A new env version source is available that allows for the project version to be defined by an environment variable.

"},{"location":"blog/2022/10/08/hatch-v160/#relaxed-version-bumping","title":"Relaxed version bumping","text":"

The standard version scheme now supports a validate-bump option that when set to false will forego the check when updating the version that the desired version is higher than the current version.

This use case comes from Project Jupyter:

A common pattern we use in Jupyter is to bump to a .dev0 minor version bump after making a release. If we have a bug fix that needs to go out in the interim, we'd rather not be forced to create a branch every time.

"},{"location":"blog/2023/12/11/hatch-v180/","title":"Hatch v1.8.0","text":"

Hatch v1.8.0 brings Python distribution management, static analysis and formatting backed by Ruff, and binaries for every platform.

"},{"location":"blog/2023/12/11/hatch-v180/#installation-made-easy","title":"Installation made easy","text":"

One thing that has been a perpetual problem for Hatch and other Python applications is that Python itself is a dependency. You, and more importantly your users, need to in some way get Python before your software can even be used. The recommended way to go about that is platform-dependent and even differs based on your target audience. I viewed this as a central UX problem for Hatch and so severe that I took a bit of a hiatus to solve it.

Luckily, I have to my satisfaction solved this problem in the form of PyApp. It is a runtime installer for Python projects written in Rust. Apps are distributed as standalone executables as users have come to expect and bootstrapping occurs upon the first invocation. Here is an example of what you would see the first time you run a binary from this release:

Now that we have binaries, creating installers for different platforms becomes trivial. Starting with this release not only are binaries available for every platform but also we have installers for Windows and macOS. The installer for macOS is signed using a certificate from the same account used to sign the official distributions from https://www.python.org, so users will not get any security pop-ups. Shout out to @ewdurbin for their extreme generosity in setting up multiple certificates in their free time!

These installers and binaries are now the recommended way to install and update Hatch. These binaries have built-in management so you can update to the latest version by running hatch self update.

Windows signing

In future we will sign the installers for Windows but I did not have time to look into how that works. macOS signing took way longer than I anticipated

"},{"location":"blog/2023/12/11/hatch-v180/#python-management","title":"Python management","text":"

For a long time I and other users have desired that Hatch gain the ability to manage Python distributions. In my mind this was always blocked on a better installation experience because there was sort of a chicken-or-egg problem where you want a Python manager but you first need Python. No longer is that the case!

The new python command group allows for easy installation of various distributions to arbitrary locations which are then added to your PATH by default. Hatch supports CPython and PyPy distributions:

"},{"location":"blog/2023/12/11/hatch-v180/#virtual-environment-python-resolution","title":"Virtual environment Python resolution","text":"

The virtual environment type is now far more intelligent when resolving the parent distribution to use and guarantees that, when no specific version is requested, the resolved distribution will always be compatible with the project.

Additionally, when a requested version cannot be found on PATH it will automatically be downloaded and managed internally.

"},{"location":"blog/2023/12/11/hatch-v180/#static-analysis","title":"Static analysis","text":"

There is a new fmt command, backed entirely by Ruff, that checks and fixes your code for formatting and linting issues.

Starting with this release, Hatch maintains default settings that are guaranteed to be up-to-date and represent best practices for programming in modern Python. The idea is to provide defaults that are so broadly applicable that the majority of users will maintain little if any of their own overrides.

The default behavior is internal management of settings to provide an OOTB experience that works. It is recommended however that you persist the default config file in version control so that other tools like IDEs can utilize your full configuration.

Since Ruff is now provided as a built-in feature, new project templates no longer have such configuration and are much less verbose.

"},{"location":"blog/2023/12/11/hatch-v180/#build-improvements","title":"Build improvements","text":"

Building projects that do not use Hatchling as a backend is now supported and such builds are managed with the standard build tool.

The bridge between Hatch and the Hatchling CLI has been removed. Previously, the builder would send serialized messages to Hatch that would contain the desired content and style for each line of output. This was done in an effort to allow builder and build hook plugins to output pretty messages without actually requiring a dependency like Rich. A problem that arises with this is that builders that invoke subprocesses will not display ANSI codes as one might expect and will lose out on the interactive experience of such invocations, like the built-in app builder plugin calling cargo build. So now everything is simpler at the expense of no colored output without manual logic, or adding a dependency if you're a third-party plugin.

"},{"location":"blog/2023/12/11/hatch-v180/#faster-environment-usage","title":"Faster environment usage","text":"

Spawning a shell or running commands within environments always first checks that your project's dependencies are satisfied and if not synchronizes the environment with what is defined. Previously, this had the potential to be quite slow for projects that have many dependencies.

Now the set of dependency definitions is hashed and no check is performed if the hash is the same as before, significantly speeding up environment usage in most cases.

"},{"location":"blog/2023/12/11/hatch-v180/#hatchling","title":"Hatchling","text":"

Hatch now depends on Hatchling v1.19.0, which was also just released.

"},{"location":"blog/2023/12/11/hatch-v180/#better-defaults","title":"Better defaults","text":"

Hatchling is all about providing the best possible defaults, even at the expense of backward compatibility. In this release, there are two breaking changes that provide a much better user experience and were in fact requested by users.

"},{"location":"blog/2023/12/11/hatch-v180/#app-build-target","title":"App build target","text":"

A new app build target is now stable that allows for the building of standalone binaries for projects. This is what Hatch itself uses for its binaries.

"},{"location":"blog/2023/12/11/hatch-v180/#meta","title":"Meta","text":""},{"location":"blog/2023/12/11/hatch-v180/#why-hatch","title":"Why Hatch?","text":"

A new page has been introduced that discusses the value proposition of Hatch and Hatchling in comparison to alternatives. Currently, it only addresses a few features but in future this page will become more comprehensive.

"},{"location":"blog/2023/12/11/hatch-v180/#future","title":"Future","text":"

Upcoming features include a test command, commands to manage dependencies, and workspaces functionality similar to Cargo that will make managing monorepos far easier.

Next year there will be two large efforts that you should expect to see:

  1. A significant amount of my free time (and some at work) will be devoted to introducing lock file functionality in Hatch and trying to get whatever that happens to be standardized.

    I met with @brettcannon about his thoughts post-PEP 665 and about mousebender. I also met with the prefix.dev team about rip and was fortunate enough to be shown a demo before its official announcement.

    At the moment, the two options I see are to either go all in and contribute to mousebender or rely on the Prefix folks and use rip. The latter has the benefit of potentially supporting Conda as a side effect with the downside of being quite new with the spec firmly out of our control. The former has the benefit of being able to easily gain institutional support from the Python packaging team and each of our employers with the downside being a significant amount of work needing to be done.

  2. When @henryiii is able to get some free time away from teaching I plan to work with him once again and push very hard for the Python build ecosystem to adopt the extensionlib approach.

    I am of the opinion that the Python community has not fully completed the expressed outcome of PEP 517 in that build backends are still (for the most part) reliant on setuptools for building non-Python code bases.

    Basically, there are components that interact with compilers to produce extension modules and components that pack files into an archive which we call a build backend. These are two distinct pieces of functionality and my view is that there should be an API that allows backends to consume extension module builders to find out where things got created and where they should be shipped inside archives.

    In this hypothetical future any build backend would be able to trigger the building of extension modules based on user configuration.

"},{"location":"blog/2023/12/11/hatch-v180/#support","title":"Support","text":"

If you or your organization finds value in what Hatch provides, consider a sponsorship to assist with maintenance and more rapid development!

"},{"location":"blog/2023/12/18/hatch-v190/","title":"Hatch v1.9.0","text":"

Hatch v1.9.0 brings improvements to static analysis and important bug fixes.

"},{"location":"blog/2023/12/18/hatch-v190/#static-analysis","title":"Static analysis","text":"

The default version of Ruff has been increased to v0.1.8. This release brings formatting capabilities to docstrings and Hatch enables this by default with line length set to 80. This length was chosen as the default because it plays nicely with the rendering of the most popular themes for Python documentation, such as Material for MkDocs and Furo.

Additionally, it is now possible for projects to pin to specific versions of Ruff for upgrading at a later time:

pyproject.toml hatch.toml 
[tool.hatch.envs.hatch-static-analysis]\ndependencies = [\"ruff==X.Y.Z\"]\n
[envs.hatch-static-analysis]\ndependencies = [\"ruff==X.Y.Z\"]\n
"},{"location":"blog/2023/12/18/hatch-v190/#notable-fixes","title":"Notable fixes","text":""},{"location":"cli/about/","title":"About","text":""},{"location":"cli/about/#verbosity","title":"Verbosity","text":"

The amount of displayed output is controlled solely by the -v/--verbose (environment variable HATCH_VERBOSE) and -q/--quiet (environment variable HATCH_QUIET) root options.

The levels are documented here.

"},{"location":"cli/about/#project-awareness","title":"Project awareness","text":"

No matter the mode, Hatch will always change to the project's root directory for entering or running commands in environments.

"},{"location":"cli/about/#tab-completion","title":"Tab completion","text":"

Completion is achieved by saving a script and then executing it as a part of your shell's startup sequence.

Afterward, you'll need to start a new shell in order for the changes to take effect.

BashZ shellfish

Save the script somewhere:

_HATCH_COMPLETE=bash_source hatch > ~/.hatch-complete.bash\n

Source the file in ~/.bashrc (or ~/.bash_profile if on macOS):

. ~/.hatch-complete.bash\n

Save the script somewhere:

_HATCH_COMPLETE=zsh_source hatch > ~/.hatch-complete.zsh\n

Source the file in ~/.zshrc:

. ~/.hatch-complete.zsh\n

Save the script in ~/.config/fish/completions:

_HATCH_COMPLETE=fish_source hatch > ~/.config/fish/completions/hatch.fish\n
"},{"location":"cli/reference/","title":"hatch","text":"

Usage:

hatch [OPTIONS] COMMAND [ARGS]...\n

Options:

Name Type Description Default --env, -e text The name of the environment to use [env var: HATCH_ENV] default --project, -p text The name of the project to work on [env var: HATCH_PROJECT] None --verbose, -v integer range (0 and above) Increase verbosity (can be used additively) [env var: HATCH_VERBOSE] 0 --quiet, -q integer range (0 and above) Decrease verbosity (can be used additively) [env var: HATCH_QUIET] 0 --color / --no-color boolean Whether or not to display colored output (default is auto-detection) [env vars: FORCE_COLOR/NO_COLOR] None --interactive / --no-interactive boolean Whether or not to allow features like prompts and progress bars (default is auto-detection) [env var: HATCH_INTERACTIVE] None --data-dir text The path to a custom directory used to persist data [env var: HATCH_DATA_DIR] None --cache-dir text The path to a custom directory used to cache data [env var: HATCH_CACHE_DIR] None --config text The path to a custom config file to use [env var: HATCH_CONFIG] None --version boolean Show the version and exit. False --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-build","title":"hatch build","text":"

Build a project.

Usage:

hatch build [OPTIONS] [LOCATION]\n

Options:

Name Type Description Default --target, -t text The target to build, overriding project defaults. This may be selected multiple times e.g. -t sdist -t wheel None --hooks-only boolean Whether or not to only execute build hooks [env var: HATCH_BUILD_HOOKS_ONLY] False --no-hooks boolean Whether or not to disable build hooks [env var: HATCH_BUILD_NO_HOOKS] False --ext boolean Whether or not to only execute build hooks for distributing binary Python packages, such as compiling extensions. Equivalent to --hooks-only -t wheel False --clean, -c boolean Whether or not existing artifacts should first be removed [env var: HATCH_BUILD_CLEAN] False --clean-hooks-after boolean Whether or not build hook artifacts should be removed after each build [env var: HATCH_BUILD_CLEAN_HOOKS_AFTER] False --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-clean","title":"hatch clean","text":"

Remove build artifacts.

Usage:

hatch clean [OPTIONS] [LOCATION]\n

Options:

Name Type Description Default --target, -t text The target with which to remove artifacts, overriding project defaults. This may be selected multiple times e.g. -t sdist -t wheel None --hooks-only boolean Whether or not to only remove artifacts from build hooks [env var: HATCH_BUILD_HOOKS_ONLY] False --no-hooks boolean Whether or not to ignore artifacts from build hooks [env var: HATCH_BUILD_NO_HOOKS] False --ext boolean Whether or not to only remove artifacts from build hooks for distributing binary Python packages, such as compiled extensions. Equivalent to --hooks-only -t wheel False --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-config","title":"hatch config","text":"

Manage the config file

Usage:

hatch config [OPTIONS] COMMAND [ARGS]...\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-config-explore","title":"hatch config explore","text":"

Open the config location in your file manager.

Usage:

hatch config explore [OPTIONS]\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-config-find","title":"hatch config find","text":"

Show the location of the config file.

Usage:

hatch config find [OPTIONS]\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-config-restore","title":"hatch config restore","text":"

Restore the config file to default settings.

Usage:

hatch config restore [OPTIONS]\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-config-set","title":"hatch config set","text":"

Assign values to config file entries. If the value is omitted, you will be prompted, with the input hidden if it is sensitive.

Usage:

hatch config set [OPTIONS] KEY [VALUE]\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-config-show","title":"hatch config show","text":"

Show the contents of the config file.

Usage:

hatch config show [OPTIONS]\n

Options:

Name Type Description Default --all, -a boolean Do not scrub secret fields False --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-config-update","title":"hatch config update","text":"

Update the config file with any new fields.

Usage:

hatch config update [OPTIONS]\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-dep","title":"hatch dep","text":"

Manage environment dependencies

Usage:

hatch dep [OPTIONS] COMMAND [ARGS]...\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-dep-hash","title":"hatch dep hash","text":"

Output a hash of the currently defined dependencies.

Usage:

hatch dep hash [OPTIONS]\n

Options:

Name Type Description Default --project-only, -p boolean Whether or not to exclude environment dependencies False --env-only, -e boolean Whether or not to exclude project dependencies False --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-dep-show","title":"hatch dep show","text":"

Display dependencies in various formats

Usage:

hatch dep show [OPTIONS] COMMAND [ARGS]...\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-dep-show-requirements","title":"hatch dep show requirements","text":"

Enumerate dependencies as a list of requirements.

Usage:

hatch dep show requirements [OPTIONS]\n

Options:

Name Type Description Default --project-only, -p boolean Whether or not to exclude environment dependencies False --env-only, -e boolean Whether or not to exclude project dependencies False --feature, -f text Whether or not to only show the dependencies of the specified features None --all boolean Whether or not to include the dependencies of all features False --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-dep-show-table","title":"hatch dep show table","text":"

Enumerate dependencies in a tabular format.

Usage:

hatch dep show table [OPTIONS]\n

Options:

Name Type Description Default --project-only, -p boolean Whether or not to exclude environment dependencies False --env-only, -e boolean Whether or not to exclude project dependencies False --lines, -l boolean Whether or not to show lines between table rows False --ascii boolean Whether or not to only use ASCII characters False --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-env","title":"hatch env","text":"

Manage project environments

Usage:

hatch env [OPTIONS] COMMAND [ARGS]...\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-env-create","title":"hatch env create","text":"

Create environments.

Usage:

hatch env create [OPTIONS] [ENV_NAME]\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-env-find","title":"hatch env find","text":"

Locate environments.

Usage:

hatch env find [OPTIONS] [ENV_NAME]\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-env-prune","title":"hatch env prune","text":"

Remove all environments.

Usage:

hatch env prune [OPTIONS]\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-env-remove","title":"hatch env remove","text":"

Remove environments.

Usage:

hatch env remove [OPTIONS] [ENV_NAME]\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-env-run","title":"hatch env run","text":"

Run commands within project environments.

The -e/--env option overrides the equivalent root option and the HATCH_ENV environment variable.

If environments provide matrices, then you may use the -i/--include and -x/--exclude options to select or exclude certain variables, optionally followed by specific comma-separated values. For example, if you have the following configuration:

pyproject.toml hatch.toml 
[[tool.hatch.envs.test.matrix]]\npython = [\"3.9\", \"3.10\"]\nversion = [\"42\", \"3.14\", \"9000\"]\n
[[envs.test.matrix]]\npython = [\"3.9\", \"3.10\"]\nversion = [\"42\", \"3.14\", \"9000\"]\n

then running:

hatch env run -i py=3.10 -x version=9000 test:pytest\n

would execute pytest in the environments test.py3.10-42 and test.py3.10-3.14. Note that py may be used as an alias for python.

Usage:

hatch env run [OPTIONS] ARGS...\n

Options:

Name Type Description Default --env, -e text The environments to target None --include, -i text The matrix variables to include None --exclude, -x text The matrix variables to exclude None --filter, -f text The JSON data used to select environments None --force-continue boolean Run every command and if there were any errors exit with the first code False --ignore-compat boolean Ignore incompatibility when selecting specific environments False --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-env-show","title":"hatch env show","text":"

Show the available environments.

Usage:

hatch env show [OPTIONS] [ENVS]...\n

Options:

Name Type Description Default --ascii boolean Whether or not to only use ASCII characters False --json boolean Whether or not to output in JSON format False --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-fmt","title":"hatch fmt","text":"

Format and lint source code.

Usage:

hatch fmt [OPTIONS] [ARGS]...\n

Options:

Name Type Description Default --check boolean Only check for errors rather than fixing them False --preview / --no-preview boolean Preview new rules and formatting None --linter, -l boolean Only run the linter False --formatter, -f boolean Only run the formatter False --sync boolean Sync the default config file with the current version of Hatch False --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-new","title":"hatch new","text":"

Create or initialize a project.

Usage:

hatch new [OPTIONS] [NAME] [LOCATION]\n

Options:

Name Type Description Default --interactive, -i boolean Interactively choose details about the project False --cli boolean Give the project a command line interface False --init boolean Initialize an existing project False --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-project","title":"hatch project","text":"

View project information

Usage:

hatch project [OPTIONS] COMMAND [ARGS]...\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-project-metadata","title":"hatch project metadata","text":"

Display project metadata.

If you want to view the raw readme file without rendering, you can use a JSON parser like jq:

hatch project metadata | jq -r .readme\n

Usage:

hatch project metadata [OPTIONS] [FIELD]\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-publish","title":"hatch publish","text":"

Publish build artifacts.

Usage:

hatch publish [OPTIONS] [ARTIFACTS]...\n

Options:

Name Type Description Default --repo, -r text The repository with which to publish artifacts [env var: HATCH_INDEX_REPO] None --user, -u text The user with which to authenticate [env var: HATCH_INDEX_USER] None --auth, -a text The credentials to use for authentication [env var: HATCH_INDEX_AUTH] None --ca-cert text The path to a CA bundle [env var: HATCH_INDEX_CA_CERT] None --client-cert text The path to a client certificate, optionally containing the private key [env var: HATCH_INDEX_CLIENT_CERT] None --client-key text The path to the client certificate's private key [env var: HATCH_INDEX_CLIENT_KEY] None --no-prompt, -n boolean Disable prompts, such as for missing required fields False --initialize-auth boolean Save first-time authentication information even if nothing was published False --publisher, -p text The publisher plugin to use (default is index) [env var: HATCH_PUBLISHER] index --option, -o text Options to pass to the publisher plugin. This may be selected multiple times e.g. -o foo=bar -o baz=23 [env var: HATCH_PUBLISHER_OPTIONS] None --yes, -y boolean Confirm without prompting when the plugin is disabled False --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-python","title":"hatch python","text":"

Manage Python installations

Usage:

hatch python [OPTIONS] COMMAND [ARGS]...\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-python-find","title":"hatch python find","text":"

Locate Python binaries.

Usage:

hatch python find [OPTIONS] NAME\n

Options:

Name Type Description Default -p, --parent boolean Show the parent directory of the Python binary False --dir, -d text The directory in which distributions reside None --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-python-install","title":"hatch python install","text":"

Install Python distributions.

You may select all to install all compatible distributions:

hatch python install all\n

Usage:

hatch python install [OPTIONS] NAMES...\n

Options:

Name Type Description Default --private boolean Do not add distributions to the user PATH False --update, -u boolean Update existing installations False --dir, -d text The directory in which to install distributions, overriding configuration None --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-python-remove","title":"hatch python remove","text":"

Remove Python distributions.

You may select all to remove all installed distributions:

hatch python remove all\n

Usage:

hatch python remove [OPTIONS] NAMES...\n

Options:

Name Type Description Default --dir, -d text The directory in which distributions reside None --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-python-show","title":"hatch python show","text":"

Show the available Python distributions.

Usage:

hatch python show [OPTIONS]\n

Options:

Name Type Description Default --ascii boolean Whether or not to only use ASCII characters False --dir, -d text The directory in which distributions reside None --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-python-update","title":"hatch python update","text":"

Update Python distributions.

You may select all to update all installed distributions:

hatch python update all\n

Usage:

hatch python update [OPTIONS] NAMES...\n

Options:

Name Type Description Default --dir, -d text The directory in which distributions reside None --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-run","title":"hatch run","text":"

Run commands within project environments. This is a convenience wrapper around the env run command.

If the first argument contains a colon, then the preceding component will be interpreted as the name of the environment to target, overriding the -e/--env root option and the HATCH_ENV environment variable.

If the environment provides matrices, then you may also provide leading arguments starting with a + or - to select or exclude certain variables, optionally followed by specific comma-separated values. For example, if you have the following configuration:

pyproject.toml hatch.toml 
[[tool.hatch.envs.test.matrix]]\npython = [\"3.9\", \"3.10\"]\nversion = [\"42\", \"3.14\", \"9000\"]\n
[[envs.test.matrix]]\npython = [\"3.9\", \"3.10\"]\nversion = [\"42\", \"3.14\", \"9000\"]\n

then running:

hatch run +py=3.10 -version=9000 test:pytest\n

would execute pytest in the environments test.py3.10-42 and test.py3.10-3.14. Note that py may be used as an alias for python.

Usage:

hatch run [OPTIONS] [ENV:]ARGS...\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-shell","title":"hatch shell","text":"

Enter a shell within a project's environment.

Usage:

hatch shell [OPTIONS] [SHELL_NAME] [SHELL_PATH] [SHELL_ARGS]...\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-status","title":"hatch status","text":"

Show information about the current environment.

Usage:

hatch status [OPTIONS]\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-version","title":"hatch version","text":"

View or set a project's version.

Usage:

hatch version [OPTIONS] [DESIRED_VERSION]\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"community/contributing/","title":"Contributing","text":"

The usual process to make a contribution is to:

  1. Check for existing related issues
  2. Fork the repository and create a new branch
  3. Make your changes
  4. Make sure formatting, linting and tests passes.
  5. Add tests if possible to cover the lines you added.
  6. Commit, and send a Pull Request.
"},{"location":"community/contributing/#clone-the-repository","title":"Clone the repository","text":"

Clone the hatch repository, cd into it, and create a new branch for your contribution:

cd hatch\ngit checkout -b add-my-contribution\n
"},{"location":"community/contributing/#run-the-tests","title":"Run the tests","text":"

Run the test suite while developing:

hatch run dev\n

Run the test suite with coverage report:

hatch run cov\n

Run the extended test suite with coverage:

hatch run full\n
"},{"location":"community/contributing/#lint","title":"Lint","text":"

Run automated formatting:

hatch run lint:fmt\n

Run full linting and type checking:

hatch run lint:all\n
"},{"location":"community/contributing/#docs","title":"Docs","text":"

Start the documentation in development:

hatch run docs:serve\n

Build and validate the documentation website:

hatch run build-check\n
"},{"location":"community/highlights/","title":"Highlights","text":""},{"location":"community/highlights/#integration","title":"Integration","text":""},{"location":"community/highlights/#adoption","title":"Adoption","text":""},{"location":"community/users/","title":"Users","text":"

The following is not intended to be a complete enumeration. Be sure to view the development version of this page for an up-to-date listing.

"},{"location":"community/users/#projects","title":"Projects","text":"

aiogram | argon2-cffi | attrs | Black | coffea | Colorama | Django Anymail | Django Debug Toolbar | Django Wiki | FastAPI | filelock | github3.py | Gradio | HTTPX | iCalendar for Humans | LinkChecker | Material for MkDocs | MkDocs | openSUSE | Nox | Packit | pipx | platformdirs | Pydantic | Pygments | PyHamcrest | PyMdown Extensions | Python JSON Schema | Rye | SALib | Spack | Starlette | structlog | tox | Twisted | urllib3 | Uvicorn | virtualenv | Voil\u00e0 | XGBoost | Ypy

"},{"location":"community/users/#industry","title":"Industry","text":""},{"location":"community/users/#organizations","title":"Organizations","text":""},{"location":"community/users/#government","title":"Government","text":""},{"location":"community/users/#academia","title":"Academia","text":""},{"location":"community/users/#research","title":"Research","text":""},{"location":"community/users/#security","title":"Security","text":""},{"location":"community/users/#crypto","title":"Crypto","text":""},{"location":"config/build/","title":"Build configuration","text":"

Build targets are defined as sections within tool.hatch.build.targets:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.<TARGET_NAME>]\n
[build.targets.<TARGET_NAME>]\n

Tip

Although not recommended, you may define global configuration in the tool.hatch.build table. Keys may then be overridden by target config.

"},{"location":"config/build/#build-system","title":"Build system","text":"

To be compatible with the broader Python packaging ecosystem, you must define the build system as follows:

pyproject.toml 
[build-system]\nrequires = [\"hatchling\"]\nbuild-backend = \"hatchling.build\"\n

The version of hatchling defined here will be used to build all targets.

Hatchling is a standards-compliant1 build backend and is a dependency of Hatch itself.

"},{"location":"config/build/#file-selection","title":"File selection","text":""},{"location":"config/build/#vcs","title":"VCS","text":"

By default, Hatch will respect the first .gitignore or .hgignore file found in your project's root directory or parent directories. Set ignore-vcs to true to disable this behavior:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.sdist]\nignore-vcs = true\n
[build.targets.sdist]\nignore-vcs = true\n

Note

For .hgignore files only glob syntax is supported.

"},{"location":"config/build/#patterns","title":"Patterns","text":"

You can set the include and exclude options to select exactly which files will be shipped in each build, with exclude taking precedence. Every entry represents a Git-style glob pattern.

For example, the following configuration:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.sdist]\ninclude = [\n  \"pkg/*.py\",\n  \"/tests\",\n]\nexclude = [\n  \"*.json\",\n  \"pkg/_compat.py\",\n]\n
[build.targets.sdist]\ninclude = [\n  \"pkg/*.py\",\n  \"/tests\",\n]\nexclude = [\n  \"*.json\",\n  \"pkg/_compat.py\",\n]\n

will exclude every file with a .json extension, and will include everything under a tests directory located at the root and every file with a .py extension that is directly under a pkg directory located at the root except for _compat.py.

"},{"location":"config/build/#artifacts","title":"Artifacts","text":"

If you want to include files that are ignored by your VCS, such as those that might be created by build hooks, you can use the artifacts option. This option is semantically equivalent to include.

Note that artifacts are not affected by the exclude option. Artifacts can be excluded by using more explicit paths or by using the ! negation operator. When using the ! operator, the negated pattern(s) must come after the more generic ones.

pyproject.toml hatch.toml 
[tool.hatch.build.targets.wheel]\nartifacts = [\n  \"*.so\",\n  \"*.dll\",\n  \"!/foo/*.so\",\n]\n
[build.targets.wheel]\nartifacts = [\n  \"*.so\",\n  \"*.dll\",\n  \"!/foo/*.so\",\n]\n
"},{"location":"config/build/#explicit-selection","title":"Explicit selection","text":""},{"location":"config/build/#generic","title":"Generic","text":"

You can use the only-include option to prevent directory traversal starting at the project root and only select specific relative paths to directories or files. Using this option ignores any defined include patterns.

pyproject.toml hatch.toml 
[tool.hatch.build.targets.sdist]\nonly-include = [\"pkg\", \"tests/unit\"]\n
[build.targets.sdist]\nonly-include = [\"pkg\", \"tests/unit\"]\n
"},{"location":"config/build/#packages","title":"Packages","text":"

The packages option is semantically equivalent to only-include (which takes precedence) except that the shipped path will be collapsed to only include the final component.

So for example, if you want to ship a package foo that is stored in a directory src you would do:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.wheel]\npackages = [\"src/foo\"]\n
[build.targets.wheel]\npackages = [\"src/foo\"]\n
"},{"location":"config/build/#forced-inclusion","title":"Forced inclusion","text":"

The force-include option allows you to select specific files or directories from anywhere on the file system that should be included and map them to the desired relative distribution path.

For example, if there was a directory alongside the project root named artifacts containing a file named lib.so and a file named lib.h in your home directory, you could ship both files in a pkg directory with the following configuration:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.wheel.force-include]\n\"../artifacts\" = \"pkg\"\n\"~/lib.h\" = \"pkg/lib.h\"\n
[build.targets.wheel.force-include]\n\"../artifacts\" = \"pkg\"\n\"~/lib.h\" = \"pkg/lib.h\"\n

Note

Warning

Files included using this option will overwrite any file path that was already included by other file selection options.

"},{"location":"config/build/#default-file-selection","title":"Default file selection","text":"

If no file selection options are provided, then what gets included is determined by each build target.

"},{"location":"config/build/#excluding-files-outside-packages","title":"Excluding files outside packages","text":"

If you want to exclude non-artifact files that do not reside within a Python package, set only-packages to true:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.wheel]\nonly-packages = true\n
[build.targets.wheel]\nonly-packages = true\n
"},{"location":"config/build/#rewriting-paths","title":"Rewriting paths","text":"

You can rewrite relative paths to directories with the sources option. For example, the following configuration:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.wheel.sources]\n\"src/foo\" = \"bar\"\n
[build.targets.wheel.sources]\n\"src/foo\" = \"bar\"\n

would distribute the file src/foo/file.ext as bar/file.ext.

If you want to remove path prefixes entirely, rather than setting each to an empty string, you can define sources as an array:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.wheel]\nsources = [\"src\"]\n
[build.targets.wheel]\nsources = [\"src\"]\n

If you want to add a prefix to paths, you can use an empty string. For example, the following configuration:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.wheel.sources]\n\"\" = \"foo\"\n
[build.targets.wheel.sources]\n\"\" = \"foo\"\n

would distribute the file bar/file.ext as foo/bar/file.ext.

The packages option itself relies on sources. Defining packages = [\"src/foo\"] for the wheel target is equivalent to the following:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.wheel]\nonly-include = [\"src/foo\"]\nsources = [\"src\"]\n
[build.targets.wheel]\nonly-include = [\"src/foo\"]\nsources = [\"src\"]\n
"},{"location":"config/build/#performance","title":"Performance","text":"

All encountered directories are traversed by default. To skip non-artifact directories that are excluded, set skip-excluded-dirs to true:

pyproject.toml hatch.toml 
[tool.hatch.build]\nskip-excluded-dirs = true\n
[build]\nskip-excluded-dirs = true\n

Warning

This may result in not shipping desired files. For example, if you want to include the file a/b/c.txt but your VCS ignores a/b, the file c.txt will not be seen because its parent directory will not be entered. In such cases you can use the force-include option.

"},{"location":"config/build/#reproducible-builds","title":"Reproducible builds","text":"

By default, build targets will build in a reproducible manner provided that they support that behavior. To disable this, set reproducible to false:

pyproject.toml hatch.toml 
[tool.hatch.build]\nreproducible = false\n
[build]\nreproducible = false\n

When enabled, the SOURCE_DATE_EPOCH environment variable will be used for all build timestamps. If not set, then Hatch will use an unchanging default value.

"},{"location":"config/build/#output-directory","title":"Output directory","text":"

When the output directory is not provided to the build command, the dist directory will be used by default. You can change the default to a different directory using a relative or absolute path like so:

pyproject.toml hatch.toml 
[tool.hatch.build]\ndirectory = \"<PATH>\"\n
[build]\ndirectory = \"<PATH>\"\n
"},{"location":"config/build/#dev-mode","title":"Dev mode","text":"

By default for dev mode environment installations or editable installs, the wheel target will determine which directories should be added to Python's search path based on the selected files.

If you want to override this detection or perhaps instruct other build targets as well, you can use the dev-mode-dirs option:

pyproject.toml hatch.toml 
[tool.hatch.build]\ndev-mode-dirs = [\".\"]\n
[build]\ndev-mode-dirs = [\".\"]\n

If you don't want to add entire directories to Python's search path, you can enable a more targeted mechanism with the mutually exclusive dev-mode-exact option:

pyproject.toml hatch.toml 
[tool.hatch.build]\ndev-mode-exact = true\n
[build]\ndev-mode-exact = true\n

Warning

The dev-mode-exact mechanism is not supported by static analysis tools & IDEs, therefore functionality such as autocompletion is unlikely to work.

"},{"location":"config/build/#build-targets","title":"Build targets","text":"

A build target can be provided by any builder plugin. There are three built-in build targets: wheel, sdist, and custom.

"},{"location":"config/build/#dependencies","title":"Dependencies","text":"

You can specify additional dependencies that will be installed in each build environment, such as for third party builders:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.your-target-name]\ndependencies = [\n  \"your-builder-plugin\"\n]\n
[build.targets.your-target-name]\ndependencies = [\n  \"your-builder-plugin\"\n]\n

You can also declare dependence on the project's runtime dependencies with the require-runtime-dependencies option:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.your-target-name]\nrequire-runtime-dependencies = true\n
[build.targets.your-target-name]\nrequire-runtime-dependencies = true\n

Additionally, you may declare dependence on specific runtime features of the project with the require-runtime-features option:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.your-target-name]\nrequire-runtime-features = [\n  \"feature1\",\n  \"feature2\",\n]\n
[build.targets.your-target-name]\nrequire-runtime-features = [\n  \"feature1\",\n  \"feature2\",\n]\n
"},{"location":"config/build/#versions","title":"Versions","text":"

If a build target supports multiple build strategies or if there are major changes over time, you can specify exactly which versions you want to build using the versions option:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.<TARGET_NAME>]\nversions = [\n  \"v1\",\n  \"beta-feature\",\n]\n
[build.targets.<TARGET_NAME>]\nversions = [\n  \"v1\",\n  \"beta-feature\",\n]\n

See the wheel target for a real world example.

"},{"location":"config/build/#build-hooks","title":"Build hooks","text":"

A build hook defines code that will be executed at various stages of the build process and can be provided by any build hook plugin. There is one built-in build hook: custom.

Build hooks can be applied either globally:

pyproject.toml hatch.toml 
[tool.hatch.build.hooks.<HOOK_NAME>]\n
[build.hooks.<HOOK_NAME>]\n

or to specific build targets:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.<TARGET_NAME>.hooks.<HOOK_NAME>]\n
[build.targets.<TARGET_NAME>.hooks.<HOOK_NAME>]\n
"},{"location":"config/build/#dependencies_1","title":"Dependencies","text":"

You can specify additional dependencies that will be installed in each build environment, such as for third party build hooks:

pyproject.toml hatch.toml 
[tool.hatch.build.hooks.your-hook-name]\ndependencies = [\n  \"your-build-hook-plugin\"\n]\n
[build.hooks.your-hook-name]\ndependencies = [\n  \"your-build-hook-plugin\"\n]\n

You can also declare dependence on the project's runtime dependencies with the require-runtime-dependencies option:

pyproject.toml hatch.toml 
[tool.hatch.build.hooks.your-hook-name]\nrequire-runtime-dependencies = true\n
[build.hooks.your-hook-name]\nrequire-runtime-dependencies = true\n

Additionally, you may declare dependence on specific runtime features of the project with the require-runtime-features option:

pyproject.toml hatch.toml 
[tool.hatch.build.hooks.your-hook-name]\nrequire-runtime-features = [\n  \"feature1\",\n  \"feature2\",\n]\n
[build.hooks.your-hook-name]\nrequire-runtime-features = [\n  \"feature1\",\n  \"feature2\",\n]\n
"},{"location":"config/build/#order-of-execution","title":"Order of execution","text":"

For each build target, build hooks execute in the order in which they are defined, starting with global hooks.

As an example, for the following configuration:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.foo.hooks.hook2]\n\n[tool.hatch.build.hooks.hook3]\n[tool.hatch.build.hooks.hook1]\n
[build.targets.foo.hooks.hook2]\n\n[build.hooks.hook3]\n[build.hooks.hook1]\n

When target foo is built, build hook hook3 will be executed first, followed by hook1, and then finally hook2.

"},{"location":"config/build/#conditional-execution","title":"Conditional execution","text":"

If you want to disable a build hook by default and control its use by environment variables, you can do so by setting the enable-by-default option to false:

pyproject.toml hatch.toml 
[tool.hatch.build.hooks.<HOOK_NAME>]\nenable-by-default = false\n
[build.hooks.<HOOK_NAME>]\nenable-by-default = false\n
"},{"location":"config/build/#environment-variables","title":"Environment variables","text":"Variable Default Description HATCH_BUILD_CLEAN false Whether or not existing artifacts should first be removed HATCH_BUILD_CLEAN_HOOKS_AFTER false Whether or not build hook artifacts should be removed after each build HATCH_BUILD_HOOKS_ONLY false Whether or not to only execute build hooks HATCH_BUILD_NO_HOOKS false Whether or not to disable all build hooks; this takes precedence over other options HATCH_BUILD_HOOKS_ENABLE false Whether or not to enable all build hooks HATCH_BUILD_HOOK_ENABLE_<HOOK_NAME> false Whether or not to enable the build hook named <HOOK_NAME> HATCH_BUILD_LOCATION dist The location with which to build the targets; only used by the build command

  1. Support for PEP 517 and PEP 660 guarantees interoperability with other build tools.\u00a0\u21a9

"},{"location":"config/context/","title":"Context formatting","text":"

You can populate configuration with the values of certain supported fields using the syntax of Python's format strings. Each field interprets the modifier part after the colon differently, if at all.

"},{"location":"config/context/#global-fields","title":"Global fields","text":"

Any configuration that declares support for context formatting will always support these fields.

"},{"location":"config/context/#paths","title":"Paths","text":"Field Description root The root project directory home The user's home directory

All paths support the following modifiers:

Modifier Description uri The normalized absolute URI path prefixed by file: real The path with all symbolic links resolved parent The parent of the preceding path

Tip

The parent modifier can be chained and may be combined with either the uri or real modifier, with the latter placed at the end. For example:

pyproject.toml hatch.toml 
[tool.hatch.envs.test]\ndependencies = [\n    \"example-project @ {root:parent:parent:uri}/example-project\",\n]\n
[envs.test]\ndependencies = [\n    \"example-project @ {root:parent:parent:uri}/example-project\",\n]\n
"},{"location":"config/context/#system-separators","title":"System separators","text":"Field Description / \\ on Windows, / otherwise ; ; on Windows, : otherwise"},{"location":"config/context/#environment-variables","title":"Environment variables","text":"

The env field and its modifier allow you to select the value of an environment variable. If the environment variable is not set, you must specify a default value as an additional modifier e.g. {env:PATH:DEFAULT}.

"},{"location":"config/context/#field-nesting","title":"Field nesting","text":"

You can insert fields within others. For example, if you wanted a script that displays the value of the environment variable FOO, with a fallback to the environment variable BAR, with its own fallback to the user's home directory, you could do the following:

pyproject.toml hatch.toml 
[tool.hatch.envs.test.scripts]\ndisplay = \"echo {env:FOO:{env:BAR:{home}}}\"\n
[envs.test.scripts]\ndisplay = \"echo {env:FOO:{env:BAR:{home}}}\"\n
"},{"location":"config/dependency/","title":"Dependency configuration","text":"

Project dependencies are defined with PEP 508 strings using optional PEP 440 version specifiers.

"},{"location":"config/dependency/#version-specifiers","title":"Version specifiers","text":"

A version specifier consists of a series of version clauses, separated by commas. For example:

pyproject.toml 
[project]\n...\ndependencies = [\n  \"cryptography\",\n  \"click>=7, <9, != 8.0.0\",\n  \"python-dateutil==2.8.*\",\n  \"numpy~=1.21.4\",\n]\n

The comma is equivalent to a logical AND operator: a candidate version must match all given version clauses in order to match the specifier as a whole.

"},{"location":"config/dependency/#operators","title":"Operators","text":"Operators Function ~= Compatible release == Version matching != Version exclusion <=, >= Inclusive ordered comparison <, > Exclusive ordered comparison === Arbitrary equality"},{"location":"config/dependency/#version-matching","title":"Version matching","text":"

A version matching clause includes the version matching operator == and a version identifier.

By default, the version matching operator is based on a strict equality comparison: the specified version must be exactly the same as the requested version.

Clause Allowed versions ==1 1.0.0 ==1.2 1.2.0

Prefix matching may be requested instead of strict comparison, by appending a trailing .* to the version identifier in the version matching clause. This means that additional trailing segments will be ignored when determining whether or not a version identifier matches the clause.

Clause Allowed versions ==1.* >=1.0.0, <2.0.0 ==1.2.* >=1.2.0, <1.3.0"},{"location":"config/dependency/#compatible-release","title":"Compatible release","text":"

A compatible release clause consists of the compatible release operator ~= and a version identifier. It matches any candidate version that is expected to be compatible with the specified version.

For a given release identifier V.N, the compatible release clause is approximately equivalent to the following pair of comparison clauses:

>= V.N, == V.*\n

This operator cannot be used with a single segment version number such as ~=1.

Clause Allowed versions ~=1.2 >=1.2.0, <2.0.0 ~=1.2.3 >=1.2.3, <1.3.0"},{"location":"config/dependency/#version-exclusion","title":"Version exclusion","text":"

A version exclusion clause includes the version exclusion operator != and a version identifier.

The allowed version identifiers and comparison semantics are the same as those of the Version matching operator, except that the sense of any match is inverted.

"},{"location":"config/dependency/#ordered-comparison","title":"Ordered comparison","text":"

Inclusive comparisons allow for the version identifier part of clauses whereas exclusive comparisons do not. For example, >=1.2 allows for version 1.2.0 while >1.2 does not.

Unlike the inclusive ordered comparisons <= and >=, the exclusive ordered comparisons < and > specifically exclude pre-releases, post-releases, and local versions of the specified version.

"},{"location":"config/dependency/#arbitrary-equality","title":"Arbitrary equality","text":"

Though heavily discouraged, arbitrary equality comparisons allow for simple string matching without any version semantics, for example ===foobar.

"},{"location":"config/dependency/#environment-markers","title":"Environment markers","text":"

Environment markers allow for dependencies to only be installed when certain conditions are met.

For example, if you need to install the latest version of cryptography that is available for a given Python major version you could define the following:

cryptography==3.3.2; python_version < \"3\"\ncryptography>=35.0; python_version > \"3\"\n

Alternatively, if you only need it on Python 3 when running on Windows you could do:

cryptography; python_version ~= \"3.0\" and platform_system == \"Windows\"\n

The available environment markers are as follows.

Marker Python equivalent Examples os_name import osos.name sys_platform import syssys.platform platform_machine import platformplatform.machine() platform_python_implementation import platformplatform.python_implementation() platform_release import platformplatform.release() platform_system import platformplatform.system() platform_version import platformplatform.version() python_version import platform'.'.join(platform.python_version_tuple()[:2]) python_full_version import platformplatform.python_version() implementation_name import syssys.implementation.name implementation_version See here "},{"location":"config/dependency/#features","title":"Features","text":"

You can select groups of optional dependencies to install using the extras syntax. For example, if a dependency named foo defined the following:

pyproject.toml 
[project.optional-dependencies]\ncrypto = [\n  \"PyJWT\",\n  \"cryptography\",\n]\nfastjson = [\n  \"orjson\",\n]\ncli = [\n  \"prompt-toolkit\",\n  \"colorama; platform_system == 'Windows'\",\n]\n

You can select the cli and crypto features like so:

foo[cli,crypto]==1.*\n

Note that the features come immediately after the package name, before any version specifiers.

"},{"location":"config/dependency/#self-referential","title":"Self-referential","text":"

Feature groups can self-referentially extend others. For example, for a project called awesome-project, the dev feature group in the following pyproject.toml file would select everything in the crypto feature group, plus black:

pyproject.toml 
[project]\nname = \"awesome-project\"\n\n[project.optional-dependencies]\ncrypto = [\n  \"PyJWT\",\n  \"cryptography\",\n]\ndev = [\n  \"awesome-project[crypto]\",\n  \"black\",\n]\n
"},{"location":"config/dependency/#direct-references","title":"Direct references","text":"

Instead of using normal version specifiers and fetching packages from an index like PyPI, you can define exact sources using direct references with an explicit URI.

Direct references are usually not meant to be used for dependencies of a published project but rather are used for defining dependencies for an environment.

All direct reference types are prefixed by the package name like:

<NAME> @ <REFERENCE>\n
"},{"location":"config/dependency/#version-control-systems","title":"Version control systems","text":"

Various version control systems (VCS) are supported as long as the associated executable is available along your PATH.

VCS direct references are defined using one of the following formats:

<NAME> @ <SCHEME>://<PATH>\n<NAME> @ <SCHEME>://<PATH>@<REVISION>\n

You may also append a #subdirectory=<PATH> component for specifying the relative path to the Python package when it is not located at the root e.g. #subdirectory=lib/foo.

For more information, refer to this.

"},{"location":"config/dependency/#supported-vcs","title":"Supported VCS","text":"GitMercurialSubversionBazaar Executable Schemes Revisions Example git proj @ git+https://github.com/org/proj.git@v1 Executable Schemes Revisions Example hg proj @ hg+file:///path/to/proj@v1 Executable Schemes Revisions Example svn proj @ svn+file:///path/to/proj Executable Schemes Revisions Example bzr proj @ bzr+lp:proj@v1"},{"location":"config/dependency/#local","title":"Local","text":"

You can install local packages with the file scheme in the following format:

<NAME> @ file://<HOST>/<PATH>\n

The <HOST> is only used on Windows systems, where it can refer to a network share. If omitted it is assumed to be localhost and the third slash must still be present.

The <PATH> can refer to a source archive, a wheel, or a directory containing a Python package.

Type Unix Windows Source archive proj @ file:///path/to/pkg.tar.gz proj @ file:///c:/path/to/pkg.tar.gz Wheel proj @ file:///path/to/pkg.whl proj @ file:///c:/path/to/pkg.whl Directory proj @ file:///path/to/pkg proj @ file:///c:/path/to/pkg

Tip

You may also specify paths relative to your project's root directory on all platforms by using context formatting:

<NAME> @ {root:uri}/pkg_inside_project\n<NAME> @ {root:uri}/../pkg_alongside_project\n
"},{"location":"config/dependency/#remote","title":"Remote","text":"

You can install source archives and wheels by simply referring to a URL:

black @ https://github.com/psf/black/archive/refs/tags/21.10b0.zip\npytorch @ https://download.pytorch.org/whl/cu102/torch-1.10.0%2Bcu102-cp39-cp39-linux_x86_64.whl\n

An expected hash value may be specified by appending a #<HASH_ALGORITHM>=<EXPECTED_HASH> component:

requests @ https://github.com/psf/requests/archive/refs/tags/v2.26.0.zip#sha256=eb729a757f01c10546ebd179ae2aec852dd0d7f8ada2328ccf4558909d859985\n

If the hash differs from the expected hash, the installation will fail.

It is recommended that only hashes which are unconditionally provided by the latest version of the standard library's hashlib module be used for hashes. As of Python 3.10, that list consists of:

"},{"location":"config/dependency/#complex-syntax","title":"Complex syntax","text":"

The following is an example that uses features and environment markers:

pkg[feature1,feature2] @ <REFERENCE> ; python_version < \"3.7\"\n

Note that the space before the semicolon is required.

"},{"location":"config/hatch/","title":"Hatch configuration","text":"

Configuration for Hatch itself is stored in a config.toml file located by default in one of the following platform-specific directories.

Platform Path macOS ~/Library/Application Support/hatch Windows %USERPROFILE%\\AppData\\Local\\hatch Unix $XDG_CONFIG_HOME/hatch (the XDG_CONFIG_HOME environment variable default is ~/.config)

You can select a custom path to the file using the --config root option or by setting the HATCH_CONFIG environment variable.

The file can be managed by the config command group.

"},{"location":"config/hatch/#mode","title":"Mode","text":"

The mode key controls how Hatch selects the project to work on.

"},{"location":"config/hatch/#local","title":"Local","text":"config.toml 
mode = \"local\"\n

By default, Hatch will look for a pyproject.toml file in the current working directory and any parent directories. The directory storing the first found file will be considered the project root.

"},{"location":"config/hatch/#project","title":"Project","text":"config.toml 
mode = \"project\"\nproject = \"proj1\"\n\n[projects]\nproj1 = \"/path/to/project1\"\nproj2 = {\"location\": \"/path/to/project2\"}\n\n[dirs]\nproject = [\"/path/to/monorepo1\", \"/path/to/monorepo2\"]\n

In this mode, Hatch will only work on the selected project. The project is located using multiple heuristics:

  1. If the project is defined in the projects table then it must be a string, or an inline table with a location key, that is the full path to the project.
  2. If the project matches a subdirectory in any of the directories listed in dirs.project, then that will be used as the project root.

An error will occur if the project cannot be found.

You can use the config set command to change the project you are working on:

$ hatch config set project proj2\nNew setting:\nproject = \"proj2\"\n

The project can be selected on a per-command basis with the -p/--project (environment variable HATCH_PROJECT) root option.

"},{"location":"config/hatch/#aware","title":"Aware","text":"config.toml 
mode = \"aware\"\n

This is essentially the local mode with a fallback to the project mode.

"},{"location":"config/hatch/#shell","title":"Shell","text":"

You can control the shell used to enter environments with the shell key.

If defined as a string, it must be the name of one of the supported shells and be available along your PATH.

config.toml 
shell = \"fish\"\n

If the executable name of your shell differs from the supported name, you can define the shell as a table with name and path keys.

config.toml 
[shell]\nname = \"bash\"\npath = \"/bin/ash\"\n

You can change the default arguments used to spawn most shells with the args key. The default for such supported shells is usually [\"-i\"].

config.toml 
[shell]\nname = \"bash\"\nargs = [\"--login\"]\n
"},{"location":"config/hatch/#supported","title":"Supported","text":"Shell Name Arguments macOS Windows Unix Almquist shell ash [\"-i\"] Bash bash [\"-i\"] Command Prompt cmd C shell csh [\"-i\"] fish fish [\"-i\"] Nushell nu [] PowerShell pwsh, powershell tcsh tcsh [\"-i\"] xonsh xonsh [\"-i\"] Z shell zsh [\"-i\"]"},{"location":"config/hatch/#default","title":"Default","text":"

Hatch will attempt to use the current shell based on parent processes. If the shell cannot be determined, then on Windows systems Hatch will use the SHELL environment variable, if present, followed by the COMSPEC environment variable, defaulting to cmd. On all other platforms only the SHELL environment variable will be used, defaulting to bash.

"},{"location":"config/hatch/#directories","title":"Directories","text":""},{"location":"config/hatch/#data","title":"Data","text":"config.toml 
[dirs]\ndata = \"...\"\n

This is the directory that is used to persist data. By default it is set to one of the following platform-specific directories.

Platform Path macOS ~/Library/Application Support/hatch Windows %USERPROFILE%\\AppData\\Local\\hatch Unix $XDG_DATA_HOME/hatch (the XDG_DATA_HOME environment variable default is ~/.local/share)

You can select a custom path to the directory using the --data-dir root option or by setting the HATCH_DATA_DIR environment variable.

"},{"location":"config/hatch/#cache","title":"Cache","text":"config.toml 
[dirs]\ncache = \"...\"\n

This is the directory that is used to cache data. By default it is set to one of the following platform-specific directories.

Platform Path macOS ~/Library/Caches/hatch Windows %USERPROFILE%\\AppData\\Local\\hatch\\Cache Unix $XDG_CACHE_HOME/hatch (the XDG_CACHE_HOME environment variable default is ~/.cache)

You can select a custom path to the directory using the --cache-dir root option or by setting the HATCH_CACHE_DIR environment variable.

"},{"location":"config/hatch/#environments","title":"Environments","text":"config.toml 
[dirs.env]\n<ENV_TYPE> = \"...\"\n

This determines where to store environments, with every key being the type of environment and the value being the desired storage location.

For example, if you wanted to store virtual environments in a .virtualenvs directory within your home directory, you could specify the following:

config.toml 
[dirs.env]\nvirtual = \"~/.virtualenvs\"\n

Any environment variables are also expanded.

If the path is not absolute, then it will be relative to the project root. So if you wanted to use a directory named .hatch in each project directory, you could do:

config.toml 
[dirs.env]\nvirtual = \".hatch\"\n

Any type of environment that is not explicitly defined will default to <DATA_DIR>/env/<ENV_TYPE>.

"},{"location":"config/hatch/#python-installations","title":"Python installations","text":"config.toml 
[dirs]\npython = \"...\"\n

This determines where to install specific versions of Python.

The following values have special meanings:

Value Path isolated (default) <DATA_DIR>/pythons"},{"location":"config/hatch/#terminal","title":"Terminal","text":"

You can configure how all output is displayed using the terminal.styles table. These settings are also applied to all plugins.

config.toml 
[terminal.styles]\nerror = \"...\"\n...\n

Cross-platform terminal capabilities are provided by Rich.

"},{"location":"config/hatch/#output-levels","title":"Output levels","text":"

The levels of output are as follows. Note that the verbosity indicates the minimum level at which the output is displayed.

Level Default Verbosity Description debug bold 1 - 3 Messages that are not useful for most user experiences error bold red -2 Messages indicating some unrecoverable error info bold 0 Messages conveying basic information success bold cyan 0 Messages indicating some positive outcome waiting bold magenta 0 Messages shown before potentially time consuming operations warning bold yellow -1 Messages conveying important information

See the documentation and color reference for guidance on valid values.

"},{"location":"config/hatch/#spinner","title":"Spinner","text":"

You can select the sequence used for waiting animations with the spinner option.

config.toml 
[terminal.styles]\nspinner = \"...\"\n
"},{"location":"config/metadata/","title":"Project metadata","text":"

Project metadata is stored in a pyproject.toml file located at the root of a project's tree and is based entirely on the standard.

"},{"location":"config/metadata/#name","title":"Name (required)","text":"

The name of the project.

pyproject.toml 
[project]\nname = \"your-app\"\n
"},{"location":"config/metadata/#version","title":"Version (required)","text":"pyproject.toml DynamicStatic

See the dedicated versioning section.

[project]\n...\ndynamic = [\"version\"]\n\n[tool.hatch.version]\npath = \"...\"\n
[project]\n...\nversion = \"0.0.1\"\n
"},{"location":"config/metadata/#description","title":"Description","text":"

A brief summary of the project.

pyproject.toml 
[project]\n...\ndescription = '...'\n
"},{"location":"config/metadata/#readme","title":"Readme","text":"

The full description of the project.

pyproject.toml SimpleComplex

The file extension must be .md, .rst, or .txt.

[project]\n...\nreadme = \"README.md\"\n

The content-type field must be set to text/markdown, text/x-rst, or text/plain.

FileText

A charset field may also be set to instruct which encoding to use for reading the file, defaulting to utf-8.

[project]\n...\nreadme = {\"file\" = \"README.md\", \"content-type\" = \"text/markdown\"}\n

The content-type field must be set to text/markdown or text/x-rst.

[project]\n...\nreadme = {\"text\" = \"...\", \"content-type\" = \"text/markdown\"}\n

Note

If this is defined as a file, then it will always be included in source distributions for consistent builds.

"},{"location":"config/metadata/#python-support","title":"Python support","text":"

The Python version requirements of the project.

pyproject.toml 
[project]\n...\nrequires-python = \">=3.8\"\n
"},{"location":"config/metadata/#license","title":"License","text":"

For more information, see PEP 639.

pyproject.toml SPDX expressionFiles 
[project]\n...\nlicense = \"Apache-2.0 OR MIT\"\n
PathsGlobs 
[project]\n...\nlicense-files = { paths = [\"LICENSE.txt\"] }\n
[project]\n...\nlicense-files = { globs = [\"LICENSES/*\"] }\n
"},{"location":"config/metadata/#ownership","title":"Ownership","text":"

The people or organizations considered to be the authors or maintainers of the project. The exact meaning is open to interpretation; it may list the original or primary authors, current maintainers, or owners of the package. If the values are the same, prefer only the use of the authors field.

pyproject.toml 
[project]\n...\nauthors = [\n  { name = \"...\", email = \"...\" },\n]\nmaintainers = [\n  { name = \"...\", email = \"...\" },\n]\n
"},{"location":"config/metadata/#keywords","title":"Keywords","text":"

The keywords used to assist in the discovery of the project.

pyproject.toml 
[project]\n...\nkeywords = [\n  \"...\",\n]\n
"},{"location":"config/metadata/#classifiers","title":"Classifiers","text":"

The trove classifiers that apply to the project.

pyproject.toml 
[project]\n...\nclassifiers = [\n  \"...\",\n]\n
"},{"location":"config/metadata/#urls","title":"URLs","text":"

A table of URLs where the key is the URL label and the value is the URL itself.

pyproject.toml 
[project.urls]\nDocumentation = \"...\"\n\"Source code\" = \"...\"\n
"},{"location":"config/metadata/#dependencies","title":"Dependencies","text":"

See the dependency specification page for more information.

Entries support context formatting and disallow direct references by default.

"},{"location":"config/metadata/#required","title":"Required","text":"pyproject.toml 
[project]\n...\ndependencies = [\n  \"...\",\n]\n
"},{"location":"config/metadata/#optional","title":"Optional","text":"pyproject.toml 
[project.optional-dependencies]\noption1 = [\n  \"...\",\n]\noption2 = [\n  \"...\",\n]\n
"},{"location":"config/metadata/#entry-points","title":"Entry points","text":"

Entry points are a mechanism for the project to advertise components it provides to be discovered and used by other code.

"},{"location":"config/metadata/#cli","title":"CLI","text":"

After installing projects that define CLI scripts, each key will be available along your PATH as a command that will call its associated object.

pyproject.toml 
[project.scripts]\ncli-name = \"pkg.subpkg:func\"\n

Using the above example, running cli-name would essentially execute the following Python script:

import sys\n\nfrom pkg.subpkg import func\n\nsys.exit(func())\n
"},{"location":"config/metadata/#gui","title":"GUI","text":"

GUI scripts are exactly the same as CLI scripts except on Windows, where they are handled specially so that they can be started without a console.

pyproject.toml 
[project.gui-scripts]\ngui-name = \"pkg.subpkg:func\"\n
"},{"location":"config/metadata/#plugins","title":"Plugins","text":"pyproject.toml 
[project.entry-points.plugin-namespace]\nplugin-name1 = \"pkg.subpkg1\"\nplugin-name2 = \"pkg.subpkg2:func\"\n
"},{"location":"config/metadata/#dynamic","title":"Dynamic","text":"

If any metadata fields are set dynamically, like the version may be, then they must be listed here.

pyproject.toml 
[project]\n...\ndynamic = [\n  \"...\",\n]\n
"},{"location":"config/metadata/#metadata-options","title":"Metadata options","text":""},{"location":"config/metadata/#allowing-direct-references","title":"Allowing direct references","text":"

By default, dependencies are not allowed to define direct references. To disable this check, set allow-direct-references to true:

pyproject.toml hatch.toml 
[tool.hatch.metadata]\nallow-direct-references = true\n
[metadata]\nallow-direct-references = true\n
"},{"location":"config/metadata/#allowing-ambiguous-features","title":"Allowing ambiguous features","text":"

By default, names of optional dependencies are normalized to prevent ambiguity. To disable this normalization, set allow-ambiguous-features to true:

pyproject.toml hatch.toml 
[tool.hatch.metadata]\nallow-ambiguous-features = true\n
[metadata]\nallow-ambiguous-features = true\n

Deprecated

This option temporarily exists to provide better interoperability with tools that do not yet support PEP 685 and will be removed in the first minor release after Jan 1, 2024.

"},{"location":"config/project-templates/","title":"Project templates","text":"

You can control how new projects are created by the new command using Hatch's config file.

"},{"location":"config/project-templates/#author","title":"Author","text":"config.toml 
[template]\nname = \"...\"\nemail = \"...\"\n
"},{"location":"config/project-templates/#licenses","title":"Licenses","text":"config.toml 
[template.licenses]\nheaders = true\ndefault = [\n  \"MIT\",\n]\n

The list of licenses should be composed of SPDX identifiers. If multiple licenses are specified, then they will be placed in a LICENSES directory.

"},{"location":"config/project-templates/#options","title":"Options","text":""},{"location":"config/project-templates/#tests","title":"Tests","text":"

This adds a tests directory with environments for testing and linting.

config.toml 
[template.plugins.default]\ntests = true\n
"},{"location":"config/project-templates/#ci","title":"CI","text":"

This adds a GitHub Actions workflow that runs tests on all platforms using modern versions of Python.

config.toml 
[template.plugins.default]\nci = false\n
"},{"location":"config/project-templates/#src-layout","title":"src layout","text":"

See this blog post.

config.toml 
[template.plugins.default]\nsrc-layout = true\n
"},{"location":"config/project-templates/#feature-flags","title":"Feature flags","text":""},{"location":"config/project-templates/#command-line-interface","title":"Command line interface","text":"

The --cli flag adds a CLI backed by Click that can also be invoked with python -m <PKG_NAME>.

"},{"location":"config/static-analysis/","title":"Static analysis configuration","text":"

Static analysis performed by the fmt command is backed entirely by Ruff.

Hatch provides default settings that user configuration can extend.

"},{"location":"config/static-analysis/#extending-config","title":"Extending config","text":"

When defining your configuration, be sure to use options that are prefixed by extend- such as extend-select, for example:

pyproject.toml ruff.toml 
[tool.ruff.format]\npreview = true\nquote-style = \"single\"\n\n[tool.ruff.lint]\npreview = true\nextend-select = [\"C901\"]\n\n[tool.ruff.lint.extend-per-file-ignores]\n\"docs/.hooks/*\" = [\"INP001\", \"T201\"]\n\n[tool.ruff.lint.isort]\nknown-first-party = [\"foo\", \"bar\"]\n
[format]\npreview = true\nquote-style = \"single\"\n\n[lint]\npreview = true\nextend-select = [\"C901\"]\n\n[lint.extend-per-file-ignores]\n\"docs/.hooks/*\" = [\"INP001\", \"T201\"]\n\n[lint.isort]\nknown-first-party = [\"foo\", \"bar\"]\n

Note

When not persisting config, there is no need to explicitly extend the defaults as Hatch automatically handles that.

"},{"location":"config/static-analysis/#persistent-config","title":"Persistent config","text":"

If you want to store the default configuration in the project, set an explicit path like so:

pyproject.toml hatch.toml 
[tool.hatch.envs.hatch-static-analysis]\nconfig-path = \"ruff_defaults.toml\"\n
[envs.hatch-static-analysis]\nconfig-path = \"ruff_defaults.toml\"\n

Then instruct Ruff to consider your configuration as an extension of the default file:

pyproject.toml ruff.toml 
[tool.ruff]\nextend = \"ruff_defaults.toml\"\n
extend = \"ruff_defaults.toml\"\n

Anytime you wish to update the defaults (such as when upgrading Hatch), you must run the fmt command once with the --sync flag e.g.:

hatch fmt --check --sync\n

Tip

This is the recommended approach since it allows other tools like IDEs to use the default configuration.

"},{"location":"config/static-analysis/#versioning","title":"Versioning","text":"

You can pin the particular version of Ruff by explicitly defining the environment dependencies:

pyproject.toml hatch.toml 
[tool.hatch.envs.hatch-static-analysis]\ndependencies = [\"ruff==X.Y.Z\"]\n
[envs.hatch-static-analysis]\ndependencies = [\"ruff==X.Y.Z\"]\n
"},{"location":"config/static-analysis/#default-settings","title":"Default settings","text":""},{"location":"config/static-analysis/#non-rule-settings","title":"Non-rule settings","text":""},{"location":"config/static-analysis/#per-file-ignored-rules","title":"Per-file ignored rules","text":""},{"location":"config/static-analysis/#selected-rules","title":"Selected rules","text":"

The following rules are based on version 0.1.8 of Ruff. Rules with a P are only selected when preview mode is enabled.

"},{"location":"config/environment/advanced/","title":"Advanced environment configuration","text":""},{"location":"config/environment/advanced/#context-formatting","title":"Context formatting","text":"

All environments support the following extra context formatting fields:

Field Description env_name The name of the environment env_type The type of environment matrix Its modifier selects the value of that matrix variable. If the environment is not part of a matrix or was not generated with the variable, you must specify a default value as an additional modifier e.g. {matrix:version:v1.0.0}. verbosity The integer verbosity value of Hatch. A flag modifier is supported that will render the value as a CLI flag e.g. -2 becomes -qq, 1 becomes -v, and 0 becomes an empty string. An additional flag integer modifier may be used to adjust the verbosity level. For example, if you wanted to make a command quiet by default, you could use {verbosity:flag:-1} within the command. args For executed commands only, any extra command line arguments with an optional default modifier if none were provided"},{"location":"config/environment/advanced/#matrix","title":"Matrix","text":"

Environments can define a series of matrices with the matrix option:

pyproject.toml hatch.toml 
[tool.hatch.envs.test]\ndependencies = [\n  \"pytest\"\n]\n\n[[tool.hatch.envs.test.matrix]]\npython = [\"2.7\", \"3.8\"]\nversion = [\"42\", \"3.14\"]\n\n[[tool.hatch.envs.test.matrix]]\npython = [\"3.8\", \"3.9\"]\nversion = [\"9000\"]\nfeature = [\"foo\", \"bar\"]\n
[envs.test]\ndependencies = [\n  \"pytest\"\n]\n\n[[envs.test.matrix]]\npython = [\"2.7\", \"3.8\"]\nversion = [\"42\", \"3.14\"]\n\n[[envs.test.matrix]]\npython = [\"3.8\", \"3.9\"]\nversion = [\"9000\"]\nfeature = [\"foo\", \"bar\"]\n

Doing so will result in the product of each variable combination being its own environment.

"},{"location":"config/environment/advanced/#naming","title":"Naming","text":"

The name of the generated environments will be the variable values of each combination separated by hyphens, altogether prefixed by <ENV_NAME>.. For example, the following configuration:

pyproject.toml hatch.toml 
[[tool.hatch.envs.test.matrix]]\nversion = [\"42\"]\nfeature = [\"foo\", \"bar\"]\n
[[envs.test.matrix]]\nversion = [\"42\"]\nfeature = [\"foo\", \"bar\"]\n

would indicate the following unique environments:

test.42-foo\ntest.42-bar\n

The exceptions to this format are described below.

"},{"location":"config/environment/advanced/#python-variables","title":"Python variables","text":"

If the variables py or python are specified, then they will rank first in the product result and will be prefixed by py if the value is not. For example, the following configuration:

pyproject.toml hatch.toml 
[[tool.hatch.envs.test.matrix]]\nversion = [\"42\"]\npython = [\"3.9\", \"pypy3\"]\n
[[envs.test.matrix]]\nversion = [\"42\"]\npython = [\"3.9\", \"pypy3\"]\n

would generate the following environments:

test.py3.9-42\ntest.pypy3-42\n

Note

The value of this variable sets the Python version.

"},{"location":"config/environment/advanced/#name-formatting","title":"Name formatting","text":"

You can set the matrix-name-format option to modify how each variable part is formatted which recognizes the placeholders {variable} and {value}. For example, the following configuration:

pyproject.toml hatch.toml 
[tool.hatch.envs.test]\nmatrix-name-format = \"{variable}_{value}\"\n\n[[tool.hatch.envs.test.matrix]]\nversion = [\"42\"]\nfeature = [\"foo\", \"bar\"]\n
[envs.test]\nmatrix-name-format = \"{variable}_{value}\"\n\n[[envs.test.matrix]]\nversion = [\"42\"]\nfeature = [\"foo\", \"bar\"]\n

would produce the following environments:

test.version_42-feature_foo\ntest.version_42-feature_bar\n

By default this option is set to {value}.

"},{"location":"config/environment/advanced/#default-environment","title":"Default environment","text":"

If the default environment defines matrices, then the generated names will not be prefixed by the environment name. This can be useful for projects that only need a single series of matrices without any standalone environments.

"},{"location":"config/environment/advanced/#selection","title":"Selection","text":"

Rather than selecting a single generated environment, you can select the root environment to target all of them. For example, if you have the following configuration:

pyproject.toml hatch.toml 
[tool.hatch.envs.test]\ndependencies = [\n  \"coverage[toml]\",\n  \"pytest\",\n  \"pytest-cov\",\n]\n\n[tool.hatch.envs.test.scripts]\ncov = 'pytest --cov-report=term-missing --cov-config=pyproject.toml --cov=pkg --cov=tests'\n\n[[tool.hatch.envs.test.matrix]]\npython = [\"2.7\", \"3.8\"]\nversion = [\"42\", \"3.14\"]\n
[envs.test]\ndependencies = [\n  \"coverage[toml]\",\n  \"pytest\",\n  \"pytest-cov\",\n]\n\n[envs.test.scripts]\ncov = 'pytest --cov-report=term-missing --cov-config=pyproject.toml --cov=pkg --cov=tests'\n\n[[envs.test.matrix]]\npython = [\"2.7\", \"3.8\"]\nversion = [\"42\", \"3.14\"]\n

you could then run your tests consecutively in all 4 environments with:

hatch run test:cov\n
"},{"location":"config/environment/advanced/#option-overrides","title":"Option overrides","text":"

You can modify options based on the conditions of different sources like matrix variables with the overrides table, using dotted key syntax for each declaration:

pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>.overrides]\n<SOURCE>.<CONDITION>.<OPTION> = <VALUE>\n
[envs.<ENV_NAME>.overrides]\n<SOURCE>.<CONDITION>.<OPTION> = <VALUE>\n

The type of the selected option determines the types of values.

"},{"location":"config/environment/advanced/#platform-overrides","title":"Platform overrides","text":"

Options can be modified based on the current platform using the platform source.

pyproject.toml hatch.toml 
[tool.hatch.envs.test.overrides]\nplatform.windows.scripts = [\n  'run=pytest -m \"not io_uring\"',\n]\n
[envs.test.overrides]\nplatform.windows.scripts = [\n  'run=pytest -m \"not io_uring\"',\n]\n

The following platforms are supported:

"},{"location":"config/environment/advanced/#environment-variable-overrides","title":"Environment variable overrides","text":"

Environment variables can modify options using the env source.

pyproject.toml hatch.toml 
[tool.hatch.envs.test.overrides]\nenv.GITHUB_ACTIONS.dev-mode = { value = false, if = [\"true\"] }\n
[envs.test.overrides]\nenv.GITHUB_ACTIONS.dev-mode = { value = false, if = [\"true\"] }\n
"},{"location":"config/environment/advanced/#matrix-variable-overrides","title":"Matrix variable overrides","text":"

The matrix variables used to generate each environment can be used to modify options within using the matrix source.

pyproject.toml hatch.toml 
[tool.hatch.envs.test.overrides]\nmatrix.version.env-vars = \"PRODUCT_VERSION\"\nmatrix.auth.features = [\n  { value = \"oauth\", if = [\"oauth2\"] },\n  { value = \"kerberos\", if = [\"kerberos\"] },\n]\n\n[[tool.hatch.envs.test.matrix]]\npython = [\"2.7\", \"3.8\"]\nversion = [\"legacy\", \"latest\"]\nauth = [\"oauth2\", \"kerberos\", \"noauth\"]\n
[envs.test.overrides]\nmatrix.version.env-vars = \"PRODUCT_VERSION\"\nmatrix.auth.features = [\n  { value = \"oauth\", if = [\"oauth2\"] },\n  { value = \"kerberos\", if = [\"kerberos\"] },\n]\n\n[[envs.test.matrix]]\npython = [\"2.7\", \"3.8\"]\nversion = [\"legacy\", \"latest\"]\nauth = [\"oauth2\", \"kerberos\", \"noauth\"]\n
"},{"location":"config/environment/advanced/#name-overrides","title":"Name overrides","text":"

When a matrix is defined, the name source can be used for regular expression matching on the generated name, minus the prefix for non-default environments.

pyproject.toml hatch.toml 
[tool.hatch.envs.test.overrides]\nname.\"^0\".env-vars = \"TESTING_UNSTABLE=true\"\n\n[[tool.hatch.envs.test.matrix]]\nversion = [\"0.1.0\", \"0.2.0\", \"1.0.0\"]\n
[envs.test.overrides]\nname.\"^0\".env-vars = \"TESTING_UNSTABLE=true\"\n\n[[envs.test.matrix]]\nversion = [\"0.1.0\", \"0.2.0\", \"1.0.0\"]\n
"},{"location":"config/environment/advanced/#types","title":"Types","text":""},{"location":"config/environment/advanced/#overwriting","title":"Overwriting","text":"

Rather than supplementing the values within mapping types or array types, you can overwrite the option as a whole by prefixing the name with set-:

pyproject.toml hatch.toml 
[tool.hatch.envs.test.overrides]\nmatrix.foo.set-platforms = [\"macos\", \"linux\"]\n
[envs.test.overrides]\nmatrix.foo.set-platforms = [\"macos\", \"linux\"]\n

When overwriting entire options or keys within mappings, override sources are applied in the following order:

  1. platform
  2. environment variables
  3. matrix variables
  4. names
"},{"location":"config/environment/advanced/#conditions","title":"Conditions","text":"

You may specify certain extra keys for any inline table that will determine whether or not to apply that entry. These modifiers may be combined with others and any negative evaluation will immediately cause the entry to be skipped.

"},{"location":"config/environment/advanced/#allowed-values","title":"Allowed values","text":"

The if key represents the allowed values for that condition. If the value of the condition is not listed, then that entry will not be applied:

pyproject.toml hatch.toml 
[tool.hatch.envs.test.overrides]\nmatrix.version.python = { value = \"pypy\", if = [\"3.14\"] }\nmatrix.version.env-vars = [\n  { key = \"KEY1\", value = \"VALUE1\", if = [\"42\"] },\n  { key = \"KEY2\", value = \"VALUE2\", if = [\"3.14\"] },\n]\n\n[[tool.hatch.envs.test.matrix]]\nversion = [\"42\", \"3.14\"]\n
[envs.test.overrides]\nmatrix.version.python = { value = \"pypy\", if = [\"3.14\"] }\nmatrix.version.env-vars = [\n  { key = \"KEY1\", value = \"VALUE1\", if = [\"42\"] },\n  { key = \"KEY2\", value = \"VALUE2\", if = [\"3.14\"] },\n]\n\n[[envs.test.matrix]]\nversion = [\"42\", \"3.14\"]\n
"},{"location":"config/environment/advanced/#specific-platforms","title":"Specific platforms","text":"

The platform key represents the desired platforms. If the current platform is not listed, then that entry will not be applied:

pyproject.toml hatch.toml 
[tool.hatch.envs.test.overrides]\nenv.EXPERIMENTAL.python = { value = \"pypy\", if = [\"1\"], platform = [\"macos\"] }\nmatrix.version.env-vars = [\n  { key = \"KEY1\", value = \"VALUE1\", if = [\"42\"], platform = [\"linux\"] },\n  { key = \"KEY2\", value = \"VALUE2\", if = [\"3.14\"] },\n]\n\n[[tool.hatch.envs.test.matrix]]\nversion = [\"42\", \"3.14\"]\n
[envs.test.overrides]\nenv.EXPERIMENTAL.python = { value = \"pypy\", if = [\"1\"], platform = [\"macos\"] }\nmatrix.version.env-vars = [\n  { key = \"KEY1\", value = \"VALUE1\", if = [\"42\"], platform = [\"linux\"] },\n  { key = \"KEY2\", value = \"VALUE2\", if = [\"3.14\"] },\n]\n\n[[envs.test.matrix]]\nversion = [\"42\", \"3.14\"]\n
"},{"location":"config/environment/advanced/#required-environment-variables","title":"Required environment variables","text":"

The env key represents the required environment variables. If any of the listed environment variables are not set or the defined value does not match, then that entry will not be applied:

pyproject.toml hatch.toml 
[tool.hatch.envs.test.overrides]\nplatform.windows.python = { value = \"pypy\", env = [\"EXPERIMENTAL\"] }\nmatrix.version.env-vars = [\n  { key = \"KEY1\", value = \"VALUE1\", if = [\"42\"], env = [\"FOO\", \"BAR=BAZ\"] },\n  { key = \"KEY2\", value = \"VALUE2\", if = [\"3.14\"] },\n]\n\n[[tool.hatch.envs.test.matrix]]\nversion = [\"42\", \"3.14\"]\n
[envs.test.overrides]\nplatform.windows.python = { value = \"pypy\", env = [\"EXPERIMENTAL\"] }\nmatrix.version.env-vars = [\n  { key = \"KEY1\", value = \"VALUE1\", if = [\"42\"], env = [\"FOO\", \"BAR=BAZ\"] },\n  { key = \"KEY2\", value = \"VALUE2\", if = [\"3.14\"] },\n]\n\n[[envs.test.matrix]]\nversion = [\"42\", \"3.14\"]\n
"},{"location":"config/environment/overview/","title":"Environment configuration","text":"

All environments are defined as sections within the tool.hatch.envs table.

pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\n
[envs.<ENV_NAME>]\n

The storage location for environments is completely configurable.

Unless an environment is explicitly selected on the command line, the default environment will be used. The type of this environment defaults to virtual.

Info

Environments prefixed by hatch- are used for special purposes e.g. static analysis.

"},{"location":"config/environment/overview/#inheritance","title":"Inheritance","text":"

All environments inherit from the environment defined by its template option, which defaults to default.

So for the following configuration:

pyproject.toml hatch.toml 
[tool.hatch.envs.foo]\ntype = \"baz\"\nskip-install = true\n\n[tool.hatch.envs.bar]\ntemplate = \"foo\"\nskip-install = false\n
[envs.foo]\ntype = \"baz\"\nskip-install = true\n\n[envs.bar]\ntemplate = \"foo\"\nskip-install = false\n

the environment bar will be of type baz with skip-install set to false.

Note

Environments do not inherit matrices.

"},{"location":"config/environment/overview/#self-referential-environments","title":"Self-referential environments","text":"

You can disable inheritance by setting template to the environment's own name:

pyproject.toml hatch.toml 
[tool.hatch.envs.foo]\ntemplate = \"foo\"\n
[envs.foo]\ntemplate = \"foo\"\n
"},{"location":"config/environment/overview/#detached-environments","title":"Detached environments","text":"

A common use case is standalone environments that do not require inheritance nor the installation of the project, such as for linting or sometimes building documentation. Enabling the detached option will make the environment self-referential and will skip project installation:

pyproject.toml hatch.toml 
[tool.hatch.envs.lint]\ndetached = true\n
[envs.lint]\ndetached = true\n
"},{"location":"config/environment/overview/#dependencies","title":"Dependencies","text":"

You can install dependencies in addition to the ones defined by your project's metadata. Entries support context formatting.

pyproject.toml hatch.toml 
[tool.hatch.envs.test]\ndependencies = [\n  \"coverage[toml]\",\n  \"pytest\",\n  \"pytest-cov\",\n  \"pytest-mock\",\n]\n
[envs.test]\ndependencies = [\n  \"coverage[toml]\",\n  \"pytest\",\n  \"pytest-cov\",\n  \"pytest-mock\",\n]\n

If you define environments with dependencies that only slightly differ from their inherited environments, you can use the extra-dependencies option to avoid redeclaring the dependencies option:

pyproject.toml hatch.toml 
[tool.hatch.envs.default]\ndependencies = [\n  \"foo\",\n  \"bar\",\n]\n\n[tool.hatch.envs.experimental]\nextra-dependencies = [\n  \"baz\",\n]\n
[envs.default]\ndependencies = [\n  \"foo\",\n  \"bar\",\n]\n\n[envs.experimental]\nextra-dependencies = [\n  \"baz\",\n]\n

Tip

Hatch uses pip to install dependencies so any configuration it supports Hatch does as well. For example, if you wanted to only use a private repository you could set the PIP_INDEX_URL environment variable.

"},{"location":"config/environment/overview/#installation","title":"Installation","text":""},{"location":"config/environment/overview/#features","title":"Features (extras)","text":"

If your project defines optional dependencies, you can select which groups to install using the features option:

pyproject.toml hatch.toml 
[tool.hatch.envs.nightly]\nfeatures = [\n  \"server\",\n  \"grpc\",\n]\n
[envs.nightly]\nfeatures = [\n  \"server\",\n  \"grpc\",\n]\n

Note

Features/optional dependencies are also known as extras in other tools.

"},{"location":"config/environment/overview/#dev-mode","title":"Dev mode","text":"

By default, environments will always reflect the current state of your project on disk. Set dev-mode to false to disable this behavior:

pyproject.toml hatch.toml 
[tool.hatch.envs.static]\ndev-mode = false\n
[envs.static]\ndev-mode = false\n
"},{"location":"config/environment/overview/#skip-install","title":"Skip install","text":"

By default, environments will install your project during creation. To ignore this step, set skip-install to true:

pyproject.toml hatch.toml 
[tool.hatch.envs.lint]\nskip-install = true\n
[envs.lint]\nskip-install = true\n
"},{"location":"config/environment/overview/#environment-variables","title":"Environment variables","text":""},{"location":"config/environment/overview/#defined","title":"Defined","text":"

You can define environment variables with the env-vars option:

pyproject.toml hatch.toml 
[tool.hatch.envs.docs]\ndependencies = [\n  \"mkdocs\"\n]\n[tool.hatch.envs.docs.env-vars]\nSOURCE_DATE_EPOCH = \"1580601600\"\n
[envs.docs]\ndependencies = [\n  \"mkdocs\"\n]\n[envs.docs.env-vars]\nSOURCE_DATE_EPOCH = \"1580601600\"\n

Values support context formatting.

"},{"location":"config/environment/overview/#filters","title":"Filters","text":"

By default, environments will have access to all environment variables. You can filter with wildcard patterns using the env-include/env-exclude options:

pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\nenv-include = [\n  \"FOO*\",\n]\nenv-exclude = [\n  \"BAR\",\n]\n
[envs.<ENV_NAME>]\nenv-include = [\n  \"FOO*\",\n]\nenv-exclude = [\n  \"BAR\",\n]\n

Exclusion patterns take precedence but will never affect defined environment variables.

"},{"location":"config/environment/overview/#scripts","title":"Scripts","text":"

You can define named scripts that may be executed or referenced at the beginning of other scripts. Context formatting is supported.

For example, in the following configuration:

pyproject.toml hatch.toml 
[tool.hatch.envs.test]\ndependencies = [\n  \"coverage[toml]\",\n  \"pytest\",\n  \"pytest-cov\",\n  \"pytest-mock\",\n]\n[tool.hatch.envs.test.scripts]\nrun-coverage = \"pytest --cov-config=pyproject.toml --cov=pkg --cov=tests\"\nrun = \"run-coverage --no-cov\"\n
[envs.test]\ndependencies = [\n  \"coverage[toml]\",\n  \"pytest\",\n  \"pytest-cov\",\n  \"pytest-mock\",\n]\n[envs.test.scripts]\nrun-coverage = \"pytest --cov-config=pyproject.toml --cov=pkg --cov=tests\"\nrun = \"run-coverage --no-cov\"\n

the run script would be expanded to:

pytest --cov-config=pyproject.toml --cov=pkg --cov=tests --no-cov\n

Scripts can also be defined as an array of strings.

pyproject.toml hatch.toml 
[tool.hatch.envs.style]\ndetached = true\ndependencies = [\n  \"flake8\",\n  \"black\",\n  \"isort\",\n]\n[tool.hatch.envs.style.scripts]\ncheck = [\n  \"flake8 .\",\n  \"black --check --diff .\",\n  \"isort --check-only --diff .\",\n]\nfmt = [\n  \"isort .\",\n  \"black .\",\n  \"check\",\n]\n
[envs.style]\ndetached = true\ndependencies = [\n  \"flake8\",\n  \"black\",\n  \"isort\",\n]\n[envs.style.scripts]\ncheck = [\n  \"flake8 .\",\n  \"black --check --diff .\",\n  \"isort --check-only --diff .\",\n]\nfmt = [\n  \"isort .\",\n  \"black .\",\n  \"check\",\n]\n

Similar to make, you can ignore the exit code of commands that start with - (a hyphen). For example, the script error defined by the following configuration would halt after the second command with 3 as the exit code:

pyproject.toml hatch.toml 
[tool.hatch.envs.test.scripts]\nerror = [\n  \"- exit 1\",\n  \"exit 3\",\n  \"exit 0\",\n]\n
[envs.test.scripts]\nerror = [\n  \"- exit 1\",\n  \"exit 3\",\n  \"exit 0\",\n]\n

Tip

Individual scripts inherit from parent environments just like options.

"},{"location":"config/environment/overview/#commands","title":"Commands","text":"

All commands are able to use any defined scripts. Also like scripts, context formatting is supported and the exit code of commands that start with a hyphen will be ignored.

"},{"location":"config/environment/overview/#pre-install","title":"Pre-install","text":"

You can run commands immediately before environments install your project.

pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\npre-install-commands = [\n  \"...\",\n]\n
[envs.<ENV_NAME>]\npre-install-commands = [\n  \"...\",\n]\n
"},{"location":"config/environment/overview/#post-install","title":"Post-install","text":"

You can run commands immediately after environments install your project.

pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\npost-install-commands = [\n  \"...\",\n]\n
[envs.<ENV_NAME>]\npost-install-commands = [\n  \"...\",\n]\n
"},{"location":"config/environment/overview/#python-version","title":"Python version","text":"

The python option specifies which version of Python to use, or an absolute path to a Python interpreter:

pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\npython = \"3.10\"\n
[envs.<ENV_NAME>]\npython = \"3.10\"\n

All environment types should respect this option.

"},{"location":"config/environment/overview/#supported-platforms","title":"Supported platforms","text":"

The platforms option indicates the operating systems with which the environment is compatible:

pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\nplatforms = [\"linux\", \"windows\", \"macos\"]\n
[envs.<ENV_NAME>]\nplatforms = [\"linux\", \"windows\", \"macos\"]\n

The following platforms are supported:

If unspecified, the environment is assumed to be compatible with all platforms.

"},{"location":"config/environment/overview/#description","title":"Description","text":"

The description option is purely informational and is displayed in the output of the env show command:

pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\ndescription = \"\"\"\nLorem ipsum ...\n\"\"\"\n
[envs.<ENV_NAME>]\ndescription = \"\"\"\nLorem ipsum ...\n\"\"\"\n
"},{"location":"config/environment/overview/#type","title":"Type","text":"

An environment's type determines which environment plugin will be used for management. The only built-in environment type is virtual, which uses virtual Python environments.

"},{"location":"history/hatch/","title":"Hatch history","text":"

All notable changes to Hatch will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

"},{"location":"history/hatch/#unreleased","title":"Unreleased","text":""},{"location":"history/hatch/#hatch-v1.9.6","title":"1.9.6 - 2024-04-24","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.9.4","title":"1.9.4 - 2024-03-12","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.9.3","title":"1.9.3 - 2024-01-25","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.9.2","title":"1.9.2 - 2024-01-21","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.9.1","title":"1.9.1 - 2023-12-25","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.9.0","title":"1.9.0 - 2023-12-19","text":"

Changed:

Added:

Fixed:

"},{"location":"history/hatch/#hatch-v1.8.1","title":"1.8.1 - 2023-12-14","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.8.0","title":"1.8.0 - 2023-12-11","text":"

Changed:

Added:

Fixed:

"},{"location":"history/hatch/#hatch-v1.7.0","title":"1.7.0 - 2023-04-03","text":"

Changed:

Added:

Fixed:

"},{"location":"history/hatch/#hatch-v1.6.3","title":"1.6.3 - 2022-10-24","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.6.2","title":"1.6.2 - 2022-10-20","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.6.1","title":"1.6.1 - 2022-10-16","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.6.0","title":"1.6.0 - 2022-10-08","text":"

Changed:

Added:

Fixed:

"},{"location":"history/hatch/#hatch-v1.5.0","title":"1.5.0 - 2022-08-28","text":"

Added:

Fixed:

"},{"location":"history/hatch/#hatch-v1.4.2","title":"1.4.2 - 2022-08-16","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.4.1","title":"1.4.1 - 2022-08-13","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.4.0","title":"1.4.0 - 2022-08-06","text":"

Added:

Fixed:

"},{"location":"history/hatch/#hatch-v1.3.1","title":"1.3.1 - 2022-07-11","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.3.0","title":"1.3.0 - 2022-07-10","text":"

Changed:

Added:

Fixed:

"},{"location":"history/hatch/#hatch-v1.2.1","title":"1.2.1 - 2022-05-30","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.2.0","title":"1.2.0 - 2022-05-22","text":"

Changed:

Added:

Fixed:

"},{"location":"history/hatch/#hatch-v1.1.2","title":"1.1.2 - 2022-05-20","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.1.1","title":"1.1.1 - 2022-05-12","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.1.0","title":"1.1.0 - 2022-05-12","text":"

Changed:

Added:

"},{"location":"history/hatch/#hatch-v1.0.0","title":"1.0.0 - 2022-04-28","text":"

This is the first stable release of Hatch v1, a complete rewrite. Enjoy!

"},{"location":"history/hatchling/","title":"Hatchling history","text":"

All notable changes to Hatchling will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

"},{"location":"history/hatchling/#unreleased","title":"Unreleased","text":""},{"location":"history/hatchling/#hatchling-v1.21.0","title":"1.21.0 - 2023-12-18","text":"

Added:

"},{"location":"history/hatchling/#hatchling-v1.20.0","title":"1.20.0 - 2023-12-13","text":"

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.19.1","title":"1.19.1 - 2023-12-12","text":"

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.19.0","title":"1.19.0 - 2023-12-11","text":"

Changed:

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.18.0","title":"1.18.0 - 2023-06-12","text":"

Changed:

Added:

"},{"location":"history/hatchling/#hatchling-v1.17.1","title":"1.17.1 - 2023-06-03","text":"

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.17.0","title":"1.17.0 - 2023-05-12","text":"

Added:

"},{"location":"history/hatchling/#hatchling-v1.16.1","title":"1.16.1 - 2023-05-11","text":"

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.16.0","title":"1.16.0 - 2023-05-11","text":"

Added:

"},{"location":"history/hatchling/#hatchling-v1.15.0","title":"1.15.0 - 2023-05-09","text":"

Added:

"},{"location":"history/hatchling/#hatchling-v1.14.1","title":"1.14.1 - 2023-04-23","text":"

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.14.0","title":"1.14.0 - 2023-04-02","text":"

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.13.0","title":"1.13.0 - 2023-02-09","text":"

Added:

"},{"location":"history/hatchling/#hatchling-v1.12.2","title":"1.12.2 - 2023-01-05","text":"

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.12.1","title":"1.12.1 - 2022-12-31","text":"

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.12.0","title":"1.12.0 - 2022-12-30","text":"

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.11.1","title":"1.11.1 - 2022-10-19","text":"

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.11.0","title":"1.11.0 - 2022-10-08","text":"

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.10.0","title":"1.10.0 - 2022-09-18","text":"

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.9.0","title":"1.9.0 - 2022-09-09","text":"

Changed:

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.8.1","title":"1.8.1 - 2022-08-25","text":"

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.8.0","title":"1.8.0 - 2022-08-16","text":"

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.7.1","title":"1.7.1 - 2022-08-13","text":"

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.7.0","title":"1.7.0 - 2022-08-12","text":"

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.6.0","title":"1.6.0 - 2022-07-23","text":"

Changed:

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.5.0","title":"1.5.0 - 2022-07-11","text":"

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.4.1","title":"1.4.1 - 2022-07-04","text":"

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.4.0","title":"1.4.0 - 2022-07-03","text":"

Changed:

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.3.1","title":"1.3.1 - 2022-05-30","text":"

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.3.0","title":"1.3.0 - 2022-05-22","text":"

Removed:

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.2.0","title":"1.2.0 - 2022-05-20","text":"

Added:

"},{"location":"history/hatchling/#hatchling-v1.1.0","title":"1.1.0 - 2022-05-19","text":"

Added:

"},{"location":"history/hatchling/#hatchling-v1.0.0","title":"1.0.0 - 2022-05-17","text":"

Changed:

Added:

"},{"location":"history/hatchling/#hatchling-v0.25.1","title":"0.25.1 - 2022-06-14","text":"

Fixed:

"},{"location":"history/hatchling/#hatchling-v0.25.0","title":"0.25.0 - 2022-05-15","text":"

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v0.24.0","title":"0.24.0 - 2022-04-28","text":"

This is the initial public release of the Hatchling build system. Support for Python 2 will be dropped in version 1.

"},{"location":"how-to/environment/package-indices/","title":"Package indices","text":"

Most Hatch environment types, like the default virtual, simply use pip to install dependencies. Therefore, you can use the standard environment variables that influence pip's behavior to choose where to search for packages.

Here's an example of setting up the default environment to look at 2 private indices (using context formatting for authentication) before finally falling back to PyPI:

pyproject.toml hatch.toml 
[tool.hatch.envs.default.env-vars]\nPIP_INDEX_URL = \"https://token:{env:GITLAB_API_TOKEN}@gitlab.com/api/v4/groups/<group1_path>/-/packages/pypi/simple/\"\nPIP_EXTRA_INDEX_URL = \"https://token:{env:GITLAB_API_TOKEN}@gitlab.com/api/v4/groups/<group2_path>/-/packages/pypi/simple/ https://pypi.org/simple/\"\n
[envs.default.env-vars]\nPIP_INDEX_URL = \"https://token:{env:GITLAB_API_TOKEN}@gitlab.com/api/v4/groups/<group1_path>/-/packages/pypi/simple/\"\nPIP_EXTRA_INDEX_URL = \"https://token:{env:GITLAB_API_TOKEN}@gitlab.com/api/v4/groups/<group2_path>/-/packages/pypi/simple/ https://pypi.org/simple/\"\n
"},{"location":"how-to/plugins/testing-builds/","title":"Testing builds","text":"

For testing Hatchling plugins, you'll usually want to generate a project to execute builds as a real user would. For example, as a minimal pytest fixture:

from pathlib import Path\n\nimport pytest\n\n\n@pytest.fixture\ndef new_project(tmp_path):\n    project_dir = tmp_path / 'my-app'\n    project_dir.mkdir()\n\n    project_file = project_dir / 'pyproject.toml'\n    project_file.write_text(\n        f\"\"\"\\\n[build-system]\nrequires = [\"hatchling\", \"hatch-plugin-name @ {Path.cwd().as_uri()}\"]\nbuild-backend = \"hatchling.build\"\n\n[project]\nname = \"my-app\"\nversion = \"0.1.0\"\n\"\"\",\n        encoding='utf-8',\n    )\n    ...\n

The issue with this is that after the first test session, the project will be forever cached by pip based on the file path. Therefore, subsequent tests runs will never use updated code.

To invalidate the cache, copy your code to a new path for every test session:

import shutil\nfrom pathlib import Path\nfrom tempfile import TemporaryDirectory\n\nimport pytest\n\n\n@pytest.fixture(scope='session')\ndef plugin_dir():\n    with TemporaryDirectory() as d:\n        directory = Path(d, 'plugin')\n        shutil.copytree(\n            Path.cwd(), directory, ignore=shutil.ignore_patterns('.git')\n        )\n\n        yield directory.resolve()\n\n\n@pytest.fixture\ndef new_project(tmp_path, plugin_dir):\n    project_dir = tmp_path / 'my-app'\n    project_dir.mkdir()\n\n    project_file = project_dir / 'pyproject.toml'\n    project_file.write_text(\n        f\"\"\"\\\n[build-system]\nrequires = [\"hatchling\", \"hatch-plugin-name @ {plugin_dir.as_uri()}\"]\nbuild-backend = \"hatchling.build\"\n\n[project]\nname = \"my-app\"\nversion = \"0.1.0\"\n\"\"\",\n        encoding='utf-8',\n    )\n    ...\n

Note

This example chooses to ignore copying .git for performance reasons. You may want to ignore more patterns, or copy only specific paths like this plugin does.

"},{"location":"meta/authors/","title":"Authors","text":""},{"location":"meta/authors/#maintainers","title":"Maintainers","text":""},{"location":"meta/authors/#contributors","title":"Contributors","text":""},{"location":"meta/faq/","title":"FAQ","text":""},{"location":"meta/faq/#interoperability","title":"Interoperability","text":"

Q: What is the risk of lock-in?

A: Not much! Other than the plugin system, everything uses Python's established standards by default. Project metadata is based entirely on the standard, the build system is compatible with PEP 517/PEP 660, versioning uses the scheme specified by PEP 440, dependencies are defined with PEP 508 strings, and environments use virtualenv.

Q: Must one use all features?

A: No, all features are optional! You can use just the build system, publish wheels and source distributions that were built by other tools, only use the environment management, etc.

"},{"location":"meta/faq/#libraries-vs-applications","title":"Libraries vs applications","text":"

Q: Are workflows for both libraries and applications supported?

A: Yes, mostly! Applications can utilize environment management just like libraries, and plugins can be used to build projects in arbitrary formats or publish artifacts to arbitrary destinations.

The only caveat is that currently there is no support for re-creating an environment given a set of dependencies in a reproducible manner. Although a standard lock file format may be far off since [PEP 665][] was rejected, resolving capabilities are coming to pip. When that is stabilized, Hatch will add locking functionality and dedicated documentation for managing applications.

"},{"location":"meta/faq/#tool-migration","title":"Tool migration","text":"

Q: How to migrate to Hatch?

"},{"location":"meta/faq/#build-system","title":"Build system","text":"SetuptoolsHatch setup.py MANIFEST.in 
import os\nfrom io import open\n\nfrom setuptools import find_packages, setup\n\nabout = {}\nwith open(os.path.join('src', 'foo', '__about__.py'), 'r', 'utf-8') as f:\n    exec(f.read(), about)\n\nwith open('README.md', 'r', 'utf-8') as f:\n    readme = f.read()\n\nsetup(\n    # Metadata\n    name='foo',\n    version=about['__version__'],\n    description='...',\n    long_description=readme,\n    long_description_content_type='text/markdown',\n    author='...',\n    author_email='...',\n    project_urls={\n        'Documentation': '...',\n        'Source': '...',\n    },\n    classifiers=[\n        '...',\n    ],\n    keywords=[\n        '...',\n    ],\n    python_requires='>=3.8',\n    install_requires=[\n        '...',\n    ],\n    extras_require={\n        'feature': ['...'],\n    },\n\n    # Packaging\n    packages=find_packages(where='src'),\n    package_dir={'': 'src'},\n    package_data={\n        'foo': ['py.typed'],\n    },\n    zip_safe=False,\n    entry_points={\n        'console_scripts': [\n            'foo = foo.cli:main',\n        ],\n    },\n)\n
graft tests\n\nglobal-exclude *.py[cod] __pycache__\n
pyproject.toml 
[build-system]\nrequires = [\"hatchling\"]\nbuild-backend = \"hatchling.build\"\n\n[project]\nname = \"foo\"\ndescription = \"...\"\nreadme = \"README.md\"\nauthors = [\n  { name = \"...\", email = \"...\" },\n]\nclassifiers = [\n  \"...\",\n]\nkeywords = [\n  \"...\",\n]\nrequires-python = \">=3.8\"\ndependencies = [\n  \"...\",\n]\ndynamic = [\"version\"]\n\n[project.urls]\nDocumentation = \"...\"\nSource = \"...\"\n\n[project.optional-dependencies]\nfeature = [\"...\"]\n\n[project.scripts]\nfoo = \"foo.cli:main\"\n\n[tool.hatch.version]\npath = \"src/foo/__about__.py\"\n\n[tool.hatch.build.targets.sdist]\ninclude = [\n  \"/src\",\n  \"/tests\",\n]\n
"},{"location":"meta/faq/#environments","title":"Environments","text":"ToxHatch

Invocation:

tox\n
tox.ini 
[tox]\nenvlist =\n    py{27,38}-{42,3.14}\n    py{38,39}-{9000}-{foo,bar}\n\n[testenv]\nusedevelop = true\ndeps =\n    coverage[toml]\n    pytest\n    pytest-cov\n    foo: cryptography\ncommands =\n    pytest --cov-report=term-missing --cov-config=pyproject.toml --cov=pkg --cov=tests {posargs}\nsetenv =\n    3.14: PRODUCT_VERSION=3.14\n    42: PRODUCT_VERSION=42\n    9000: PRODUCT_VERSION=9000\n    {foo,bar}: EXPERIMENTAL=true\n

Invocation:

hatch run test\n
pyproject.toml hatch.toml 
[tool.hatch.envs.default]\ndependencies = [\n  \"coverage[toml]\",\n  \"pytest\",\n  \"pytest-cov\",\n]\n\n[tool.hatch.envs.default.scripts]\ntest = 'pytest --cov-report=term-missing --cov-config=pyproject.toml --cov=pkg --cov=tests'\n\n[tool.hatch.envs.default.overrides]\nmatrix.version.env-vars = \"PRODUCT_VERSION\"\nmatrix.features.env-vars = \"EXPERIMENTAL=true\"\nmatrix.features.dependencies = [\n  { value = \"cryptography\", if = [\"foo\"] },\n]\n\n[[tool.hatch.envs.default.matrix]]\npython = [\"2.7\", \"3.8\"]\nversion = [\"42\", \"3.14\"]\n\n[[tool.hatch.envs.default.matrix]]\npython = [\"3.8\", \"3.9\"]\nversion = [\"9000\"]\nfeatures = [\"foo\", \"bar\"]\n
[envs.default]\ndependencies = [\n  \"coverage[toml]\",\n  \"pytest\",\n  \"pytest-cov\",\n]\n\n[envs.default.scripts]\ntest = 'pytest --cov-report=term-missing --cov-config=pyproject.toml --cov=pkg --cov=tests'\n\n[envs.default.overrides]\nmatrix.version.env-vars = \"PRODUCT_VERSION\"\nmatrix.features.env-vars = \"EXPERIMENTAL=true\"\nmatrix.features.dependencies = [\n  { value = \"cryptography\", if = [\"foo\"] },\n]\n\n[[envs.default.matrix]]\npython = [\"2.7\", \"3.8\"]\nversion = [\"42\", \"3.14\"]\n\n[[envs.default.matrix]]\npython = [\"3.8\", \"3.9\"]\nversion = [\"9000\"]\nfeatures = [\"foo\", \"bar\"]\n
"},{"location":"meta/faq/#fast-cli","title":"Fast CLI?","text":"

The claim about being faster than other tools is based on timings that are always checked in CI.

Hatch achieves this by using lazy imports, lazily performing computation manually and with functools.cached_property, using hacks like not not ... instead of bool(...), etc.

"},{"location":"plugins/about/","title":"Plugins","text":"

Hatch utilizes pluggy for its plugin functionality.

"},{"location":"plugins/about/#overview","title":"Overview","text":"

All plugins provide registration hooks that return one or more classes that inherit from a particular type interface.

Each registration hook must be decorated by Hatch's hook marker. For example, if you wanted to create a new kind of environment you could do:

hooks.py 
from hatchling.plugin import hookimpl\n\nfrom .plugin import SpecialEnvironment\n\n\n@hookimpl\ndef hatch_register_environment():\n    return SpecialEnvironment\n

The hooks can return a single class or a list of classes.

Every class must define an attribute called PLUGIN_NAME that users will select when they wish to use the plugin. So in the example above, the class might be defined like:

plugin.py 
...\nclass SpecialEnvironment(...):\n    PLUGIN_NAME = 'special'\n    ...\n
"},{"location":"plugins/about/#project-configuration","title":"Project configuration","text":""},{"location":"plugins/about/#naming","title":"Naming","text":"

It is recommended that plugin project names are prefixed with hatch-. For example, if you wanted to make a plugin that provides some functionality for a product named foo you might do:

pyproject.toml 
[project]\nname = \"hatch-foo\"\n
"},{"location":"plugins/about/#discovery","title":"Discovery","text":"

You'll need to define your project as a Python plugin for Hatch:

pyproject.toml 
[project.entry-points.hatch]\nfoo = \"pkg.hooks\"\n

The name of the plugin should be the project name (excluding any hatch- prefix) and the path should represent the module that contains the registration hooks.

"},{"location":"plugins/about/#classifier","title":"Classifier","text":"

Add Framework :: Hatch to your project's classifiers to make it easy to search for Hatch plugins:

pyproject.toml 
[project]\nclassifiers = [\n  ...\n  \"Framework :: Hatch\",\n  ...\n]\n
"},{"location":"plugins/about/#types","title":"Types","text":""},{"location":"plugins/about/#hatchling","title":"Hatchling","text":"

These are all involved in building projects and therefore any defined dependencies are automatically installed in each build environment.

"},{"location":"plugins/about/#hatch","title":"Hatch","text":"

These must be installed in the same environment as Hatch itself.

"},{"location":"plugins/utilities/","title":"Plugin utilities","text":""},{"location":"plugins/utilities/#hatchling.builders.utils.get_reproducible_timestamp","title":"hatchling.builders.utils.get_reproducible_timestamp() -> int","text":"

Returns an int derived from the SOURCE_DATE_EPOCH environment variable; see https://reproducible-builds.org/specs/source-date-epoch/.

The default value will always be: 1580601600

Source code in backend/src/hatchling/builders/utils.py 
def get_reproducible_timestamp() -> int:\n    \"\"\"\n    Returns an `int` derived from the `SOURCE_DATE_EPOCH` environment variable; see\n    https://reproducible-builds.org/specs/source-date-epoch/.\n\n    The default value will always be: `1580601600`\n    \"\"\"\n    return int(os.environ.get('SOURCE_DATE_EPOCH', '1580601600'))\n
"},{"location":"plugins/utilities/#hatchling.builders.config.BuilderConfig","title":"BuilderConfig","text":""},{"location":"plugins/utilities/#hatchling.builders.config.BuilderConfig.directory","title":"directory: str property","text":""},{"location":"plugins/utilities/#hatchling.builders.config.BuilderConfig.ignore_vcs","title":"ignore_vcs: bool property","text":""},{"location":"plugins/utilities/#hatchling.builders.config.BuilderConfig.reproducible","title":"reproducible: bool property","text":"

Whether or not the target should be built in a reproducible manner, defaulting to true.

"},{"location":"plugins/utilities/#hatchling.builders.config.BuilderConfig.dev_mode_dirs","title":"dev_mode_dirs: list[str] property","text":"

Directories which must be added to Python's search path in dev mode.

"},{"location":"plugins/utilities/#hatchling.builders.config.BuilderConfig.versions","title":"versions: list[str] property","text":""},{"location":"plugins/utilities/#hatchling.builders.config.BuilderConfig.dependencies","title":"dependencies: list[str] property","text":""},{"location":"plugins/utilities/#hatchling.builders.config.BuilderConfig.default_include","title":"default_include() -> list","text":""},{"location":"plugins/utilities/#hatchling.builders.config.BuilderConfig.default_exclude","title":"default_exclude() -> list","text":""},{"location":"plugins/utilities/#hatchling.builders.config.BuilderConfig.default_packages","title":"default_packages() -> list","text":""},{"location":"plugins/utilities/#hatchling.builders.config.BuilderConfig.default_only_include","title":"default_only_include() -> list","text":""},{"location":"plugins/utilities/#hatchling.bridge.app.Application","title":"Application","text":"

The way output is displayed can be configured by users.

Important

Never import this directly; Hatch judiciously decides if a type of plugin requires the capabilities herein and will grant access via an attribute.

"},{"location":"plugins/utilities/#hatchling.bridge.app.Application.verbosity","title":"verbosity: int property","text":"

The verbosity level of the application, with 0 as the default.

"},{"location":"plugins/utilities/#hatchling.bridge.app.Application.abort","title":"abort(message: str = '', code: int = 1, **kwargs: Any) -> None","text":"

Terminate the program with the given return code.

"},{"location":"plugins/utilities/#hatchling.bridge.app.Application.display_debug","title":"display_debug(message: str = '', level: int = 1, **kwargs: Any) -> None","text":"

Meant to be used for messages that are not useful for most user experiences. The level option must be between 1 and 3 (inclusive).

"},{"location":"plugins/utilities/#hatchling.bridge.app.Application.display_error","title":"display_error(message: str = '', **kwargs: Any) -> None","text":"

Meant to be used for messages indicating some unrecoverable error.

"},{"location":"plugins/utilities/#hatchling.bridge.app.Application.display_info","title":"display_info(message: str = '', **kwargs: Any) -> None","text":"

Meant to be used for messages conveying basic information.

"},{"location":"plugins/utilities/#hatchling.bridge.app.Application.display_success","title":"display_success(message: str = '', **kwargs: Any) -> None","text":"

Meant to be used for messages indicating some positive outcome.

"},{"location":"plugins/utilities/#hatchling.bridge.app.Application.display_waiting","title":"display_waiting(message: str = '', **kwargs: Any) -> None","text":"

Meant to be used for messages shown before potentially time consuming operations.

"},{"location":"plugins/utilities/#hatchling.bridge.app.Application.display_warning","title":"display_warning(message: str = '', **kwargs: Any) -> None","text":"

Meant to be used for messages conveying important information.

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform","title":"Platform","text":""},{"location":"plugins/utilities/#hatch.utils.platform.Platform.default_shell","title":"default_shell: str property","text":"

Returns the default shell of the system.

On Windows systems first try the SHELL environment variable, if present, followed by the COMSPEC environment variable, defaulting to cmd. On all other platforms only the SHELL environment variable will be used, defaulting to bash.

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform.modules","title":"modules: LazilyLoadedModules property","text":"

Accessor for lazily loading modules that either take multiple milliseconds to import (like shutil and subprocess) or are not used on all platforms (like shlex).

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform.home","title":"home: Path property","text":"

The user's home directory as a path-like object.

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform.name","title":"name: str property","text":"

One of the following:

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform.windows","title":"windows: bool property","text":"

Indicates whether Hatch is running on Windows.

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform.macos","title":"macos: bool property","text":"

Indicates whether Hatch is running on macOS.

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform.linux","title":"linux: bool property","text":"

Indicates whether Hatch is running on neither Windows nor macOS.

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform.format_for_subprocess","title":"format_for_subprocess(command: str | list[str], *, shell: bool) -> str | list[str]","text":"

Format the given command in a cross-platform manner for immediate consumption by subprocess utilities.

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform.run_command","title":"run_command(command: str | list[str], *, shell: bool = False, **kwargs: Any) -> CompletedProcess","text":"

Equivalent to the standard library's subprocess.run, with the command first being properly formatted.

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform.check_command","title":"check_command(command: str | list[str], *, shell: bool = False, **kwargs: Any) -> CompletedProcess","text":"

Equivalent to run_command, but non-zero exit codes will gracefully end program execution.

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform.check_command_output","title":"check_command_output(command: str | list[str], *, shell: bool = False, **kwargs: Any) -> str","text":"

Equivalent to the output from the process returned by capture_process, but non-zero exit codes will gracefully end program execution.

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform.capture_process","title":"capture_process(command: str | list[str], *, shell: bool = False, **kwargs: Any) -> Popen","text":"

Equivalent to the standard library's subprocess.Popen, with all output captured by stdout and the command first being properly formatted.

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform.exit_with_command","title":"exit_with_command(command: list[str]) -> None","text":"

Run the given command and exit with its exit code. On non-Windows systems, this uses the standard library's os.execvp.

"},{"location":"plugins/utilities/#hatch.env.context.EnvironmentContextFormatter","title":"EnvironmentContextFormatter","text":""},{"location":"plugins/utilities/#hatch.env.context.EnvironmentContextFormatter.formatters","title":"formatters()","text":"

This returns a mapping of supported field names to their respective formatting functions. Each function accepts 2 arguments:

"},{"location":"plugins/build-hook/custom/","title":"Custom build hook","text":"

This is a custom class in a given Python file that inherits from the BuildHookInterface.

"},{"location":"plugins/build-hook/custom/#configuration","title":"Configuration","text":"

The build hook plugin name is custom.

pyproject.toml hatch.toml 
[tool.hatch.build.hooks.custom]\n[tool.hatch.build.targets.<TARGET_NAME>.hooks.custom]\n
[build.hooks.custom]\n[build.targets.<TARGET_NAME>.hooks.custom]\n
"},{"location":"plugins/build-hook/custom/#options","title":"Options","text":"Option Default Description path hatch_build.py The path of the Python file"},{"location":"plugins/build-hook/custom/#example","title":"Example","text":"hatch_build.py 
from hatchling.builders.hooks.plugin.interface import BuildHookInterface\n\n\nclass CustomBuildHook(BuildHookInterface):\n    ...\n

If multiple subclasses are found, you must define a function named get_build_hook that returns the desired build hook.

Note

Any defined PLUGIN_NAME is ignored and will always be custom.

"},{"location":"plugins/build-hook/reference/","title":"Build hook plugins","text":"

A build hook provides code that will be executed at various stages of the build process. See the documentation for build hook configuration.

"},{"location":"plugins/build-hook/reference/#known-third-party","title":"Known third-party","text":""},{"location":"plugins/build-hook/reference/#overview","title":"Overview","text":"

Build hooks run for every selected version of build targets.

The initialization stage occurs immediately before each build and the finalization stage occurs immediately after. Each stage has the opportunity to view or modify build data.

"},{"location":"plugins/build-hook/reference/#build-data","title":"Build data","text":"

Build data is a simple mapping whose contents can influence the behavior of builds. Which fields exist and are recognized depends on each build target.

The following fields are always present and recognized by the build system itself:

Field Type Description artifacts list[str] This is a list of extra artifact patterns and should generally only be appended to force_include dict[str, str] This is a mapping of extra forced inclusion paths, with this mapping taking precedence in case of conflicts build_hooks tuple[str, ...] This is an immutable sequence of the names of the configured build hooks and matches the order in which they run

Attention

While user-facing TOML options are hyphenated, build data fields should be named with underscores to allow plugins to use them as valid Python identifiers.

"},{"location":"plugins/build-hook/reference/#notes","title":"Notes","text":"

In some cases it may be necessary to use force_include rather than artifacts. For example, say that you want to install a lib.so directly at the root of site-packages and a project defines a package src/foo. If you create src/lib.so, there will never be a match because the directory traversal starts at src/foo rather than src. In that case you must do either:

build_data['force_include']['src/lib.so'] = 'src/lib.so'\n

or

build_data['force_include']['/absolute/path/to/src/lib.so'] = 'src/lib.so'\n
"},{"location":"plugins/build-hook/reference/#hatchling.builders.hooks.plugin.interface.BuildHookInterface","title":"BuildHookInterface","text":"

Example usage:

plugin.py hooks.py 
from hatchling.builders.hooks.plugin.interface import BuildHookInterface\n\n\nclass SpecialBuildHook(BuildHookInterface):\n    PLUGIN_NAME = 'special'\n    ...\n
from hatchling.plugin import hookimpl\n\nfrom .plugin import SpecialBuildHook\n\n\n@hookimpl\ndef hatch_register_build_hook():\n    return SpecialBuildHook\n
Source code in backend/src/hatchling/builders/hooks/plugin/interface.py 
class BuildHookInterface(Generic[BuilderConfigBound]):  # no cov\n    \"\"\"\n    Example usage:\n\n    ```python tab=\"plugin.py\"\n    from hatchling.builders.hooks.plugin.interface import BuildHookInterface\n\n\n    class SpecialBuildHook(BuildHookInterface):\n        PLUGIN_NAME = 'special'\n        ...\n    ```\n\n    ```python tab=\"hooks.py\"\n    from hatchling.plugin import hookimpl\n\n    from .plugin import SpecialBuildHook\n\n\n    @hookimpl\n    def hatch_register_build_hook():\n        return SpecialBuildHook\n    ```\n    \"\"\"\n\n    PLUGIN_NAME = ''\n    \"\"\"The name used for selection.\"\"\"\n\n    def __init__(\n        self,\n        root: str,\n        config: dict[str, Any],\n        build_config: BuilderConfigBound,\n        metadata: ProjectMetadata,\n        directory: str,\n        target_name: str,\n        app: Application | None = None,\n    ) -> None:\n        self.__root = root\n        self.__config = config\n        self.__build_config = build_config\n        self.__metadata = metadata\n        self.__directory = directory\n        self.__target_name = target_name\n        self.__app = app\n\n    @property\n    def app(self) -> Application:\n        \"\"\"\n        An instance of [Application](../utilities.md#hatchling.bridge.app.Application).\n        \"\"\"\n        if self.__app is None:\n            from hatchling.bridge.app import Application\n\n            self.__app = cast(Application, Application().get_safe_application())\n\n        return self.__app\n\n    @property\n    def root(self) -> str:\n        \"\"\"\n        The root of the project tree.\n        \"\"\"\n        return self.__root\n\n    @property\n    def config(self) -> dict[str, Any]:\n        \"\"\"\n        The cumulative hook configuration.\n\n        ```toml config-example\n        [tool.hatch.build.hooks.<PLUGIN_NAME>]\n        [tool.hatch.build.targets.<TARGET_NAME>.hooks.<PLUGIN_NAME>]\n        ```\n        \"\"\"\n        return self.__config\n\n    @property\n    def metadata(self) -> ProjectMetadata:\n        # Undocumented for now\n        return self.__metadata\n\n    @property\n    def build_config(self) -> BuilderConfigBound:\n        \"\"\"\n        An instance of [BuilderConfig](../utilities.md#hatchling.builders.config.BuilderConfig).\n        \"\"\"\n        return self.__build_config\n\n    @property\n    def directory(self) -> str:\n        \"\"\"\n        The build directory.\n        \"\"\"\n        return self.__directory\n\n    @property\n    def target_name(self) -> str:\n        \"\"\"\n        The plugin name of the build target.\n        \"\"\"\n        return self.__target_name\n\n    def clean(self, versions: list[str]) -> None:\n        \"\"\"\n        This occurs before the build process if the `-c`/`--clean` flag was passed to\n        the [`build`](../../cli/reference.md#hatch-build) command, or when invoking\n        the [`clean`](../../cli/reference.md#hatch-clean) command.\n        \"\"\"\n\n    def initialize(self, version: str, build_data: dict[str, Any]) -> None:\n        \"\"\"\n        This occurs immediately before each build.\n\n        Any modifications to the build data will be seen by the build target.\n        \"\"\"\n\n    def finalize(self, version: str, build_data: dict[str, Any], artifact_path: str) -> None:\n        \"\"\"\n        This occurs immediately after each build and will not run if the `--hooks-only` flag\n        was passed to the [`build`](../../cli/reference.md#hatch-build) command.\n\n        The build data will reflect any modifications done by the target during the build.\n        \"\"\"\n
"},{"location":"plugins/build-hook/reference/#hatchling.builders.hooks.plugin.interface.BuildHookInterface.PLUGIN_NAME","title":"PLUGIN_NAME = '' class-attribute instance-attribute","text":"

The name used for selection.

"},{"location":"plugins/build-hook/reference/#hatchling.builders.hooks.plugin.interface.BuildHookInterface.app","title":"app: Application property","text":"

An instance of Application.

"},{"location":"plugins/build-hook/reference/#hatchling.builders.hooks.plugin.interface.BuildHookInterface.root","title":"root: str property","text":"

The root of the project tree.

"},{"location":"plugins/build-hook/reference/#hatchling.builders.hooks.plugin.interface.BuildHookInterface.config","title":"config: dict[str, Any] property","text":"

The cumulative hook configuration.

pyproject.toml hatch.toml 
[tool.hatch.build.hooks.<PLUGIN_NAME>]\n[tool.hatch.build.targets.<TARGET_NAME>.hooks.<PLUGIN_NAME>]\n
[build.hooks.<PLUGIN_NAME>]\n[build.targets.<TARGET_NAME>.hooks.<PLUGIN_NAME>]\n
"},{"location":"plugins/build-hook/reference/#hatchling.builders.hooks.plugin.interface.BuildHookInterface.build_config","title":"build_config: BuilderConfigBound property","text":"

An instance of BuilderConfig.

"},{"location":"plugins/build-hook/reference/#hatchling.builders.hooks.plugin.interface.BuildHookInterface.target_name","title":"target_name: str property","text":"

The plugin name of the build target.

"},{"location":"plugins/build-hook/reference/#hatchling.builders.hooks.plugin.interface.BuildHookInterface.directory","title":"directory: str property","text":"

The build directory.

"},{"location":"plugins/build-hook/reference/#hatchling.builders.hooks.plugin.interface.BuildHookInterface.clean","title":"clean(versions: list[str]) -> None","text":"

This occurs before the build process if the -c/--clean flag was passed to the build command, or when invoking the clean command.

Source code in backend/src/hatchling/builders/hooks/plugin/interface.py 
def clean(self, versions: list[str]) -> None:\n    \"\"\"\n    This occurs before the build process if the `-c`/`--clean` flag was passed to\n    the [`build`](../../cli/reference.md#hatch-build) command, or when invoking\n    the [`clean`](../../cli/reference.md#hatch-clean) command.\n    \"\"\"\n
"},{"location":"plugins/build-hook/reference/#hatchling.builders.hooks.plugin.interface.BuildHookInterface.initialize","title":"initialize(version: str, build_data: dict[str, Any]) -> None","text":"

This occurs immediately before each build.

Any modifications to the build data will be seen by the build target.

Source code in backend/src/hatchling/builders/hooks/plugin/interface.py 
def initialize(self, version: str, build_data: dict[str, Any]) -> None:\n    \"\"\"\n    This occurs immediately before each build.\n\n    Any modifications to the build data will be seen by the build target.\n    \"\"\"\n
"},{"location":"plugins/build-hook/reference/#hatchling.builders.hooks.plugin.interface.BuildHookInterface.finalize","title":"finalize(version: str, build_data: dict[str, Any], artifact_path: str) -> None","text":"

This occurs immediately after each build and will not run if the --hooks-only flag was passed to the build command.

The build data will reflect any modifications done by the target during the build.

Source code in backend/src/hatchling/builders/hooks/plugin/interface.py 
def finalize(self, version: str, build_data: dict[str, Any], artifact_path: str) -> None:\n    \"\"\"\n    This occurs immediately after each build and will not run if the `--hooks-only` flag\n    was passed to the [`build`](../../cli/reference.md#hatch-build) command.\n\n    The build data will reflect any modifications done by the target during the build.\n    \"\"\"\n
"},{"location":"plugins/build-hook/version/","title":"Version build hook","text":"

This writes the project's version to a file.

"},{"location":"plugins/build-hook/version/#configuration","title":"Configuration","text":"

The build hook plugin name is version.

pyproject.toml hatch.toml 
[tool.hatch.build.hooks.version]\n[tool.hatch.build.targets.<TARGET_NAME>.hooks.version]\n
[build.hooks.version]\n[build.targets.<TARGET_NAME>.hooks.version]\n
"},{"location":"plugins/build-hook/version/#options","title":"Options","text":"Option Description path (required) A relative path to the desired file template A string representing the entire contents of path that will be formatted with a version variable pattern Rather than updating the entire file, a regular expression may be used that has a named group called version that represents the version. If set to true, a pattern will be used that looks for a variable named __version__ or VERSION that is set to a string containing the version, optionally prefixed with the lowercase letter v."},{"location":"plugins/builder/app/","title":"Application builder","text":"

This uses PyApp to build an application that is able to bootstrap itself at runtime.

Note

This requires an installation of Rust.

"},{"location":"plugins/builder/app/#configuration","title":"Configuration","text":"

The builder plugin name is app.

pyproject.toml hatch.toml 
[tool.hatch.build.targets.app]\n
[build.targets.app]\n
"},{"location":"plugins/builder/app/#options","title":"Options","text":"Option Default Description scripts all defined An array of defined script names to limit what gets built python-version latest compatible Python minor version The Python version ID to use pyapp-version The version of PyApp to use"},{"location":"plugins/builder/app/#build-behavior","title":"Build behavior","text":"

If any scripts are defined then each one will be built (limited by the scripts option). Otherwise, a single executable will be built based on the project name assuming there is an equivalently named module with a __main__.py file.

Every executable will be built inside an app directory in the output directory.

If the CARGO environment variable is set then that path will be used as the executable for performing builds.

If the CARGO_BUILD_TARGET environment variable is set then its value will be appended to the file name stems.

If the PYAPP_REPO environment variable is set then a local build will be performed inside that directory rather than installing from crates.io. Note that this is required if the CARGO environment variable refers to cross.

"},{"location":"plugins/builder/custom/","title":"Custom builder","text":"

This is a custom class in a given Python file that inherits from the BuilderInterface.

"},{"location":"plugins/builder/custom/#configuration","title":"Configuration","text":"

The builder plugin name is custom.

pyproject.toml hatch.toml 
[tool.hatch.build.targets.custom]\n
[build.targets.custom]\n
"},{"location":"plugins/builder/custom/#options","title":"Options","text":"Option Default Description path hatch_build.py The path of the Python file"},{"location":"plugins/builder/custom/#example","title":"Example","text":"hatch_build.py 
from hatchling.builders.plugin.interface import BuilderInterface\n\n\nclass CustomBuilder(BuilderInterface):\n    ...\n

If multiple subclasses are found, you must define a function named get_builder that returns the desired builder.

Note

Any defined PLUGIN_NAME is ignored and will always be custom.

"},{"location":"plugins/builder/reference/","title":"Builder plugins","text":"

See the documentation for build configuration.

"},{"location":"plugins/builder/reference/#known-third-party","title":"Known third-party","text":""},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface","title":"BuilderInterface","text":"

Example usage:

plugin.py hooks.py 
from hatchling.builders.plugin.interface import BuilderInterface\n\n\nclass SpecialBuilder(BuilderInterface):\n    PLUGIN_NAME = 'special'\n    ...\n
from hatchling.plugin import hookimpl\n\nfrom .plugin import SpecialBuilder\n\n\n@hookimpl\ndef hatch_register_builder():\n    return SpecialBuilder\n
Source code in backend/src/hatchling/builders/plugin/interface.py 
class BuilderInterface(ABC, Generic[BuilderConfigBound, PluginManagerBound]):\n    \"\"\"\n    Example usage:\n\n    ```python tab=\"plugin.py\"\n    from hatchling.builders.plugin.interface import BuilderInterface\n\n\n    class SpecialBuilder(BuilderInterface):\n        PLUGIN_NAME = 'special'\n        ...\n    ```\n\n    ```python tab=\"hooks.py\"\n    from hatchling.plugin import hookimpl\n\n    from .plugin import SpecialBuilder\n\n\n    @hookimpl\n    def hatch_register_builder():\n        return SpecialBuilder\n    ```\n    \"\"\"\n\n    PLUGIN_NAME = ''\n    \"\"\"The name used for selection.\"\"\"\n\n    def __init__(\n        self,\n        root: str,\n        plugin_manager: PluginManagerBound | None = None,\n        config: dict[str, Any] | None = None,\n        metadata: ProjectMetadata | None = None,\n        app: Application | None = None,\n    ) -> None:\n        self.__root = root\n        self.__plugin_manager = cast(PluginManagerBound, plugin_manager)\n        self.__raw_config = config\n        self.__metadata = metadata\n        self.__app = app\n        self.__config = cast(BuilderConfigBound, None)\n        self.__project_config: dict[str, Any] | None = None\n        self.__hatch_config: dict[str, Any] | None = None\n        self.__build_config: dict[str, Any] | None = None\n        self.__build_targets: list[str] | None = None\n        self.__target_config: dict[str, Any] | None = None\n\n        # Metadata\n        self.__project_id: str | None = None\n\n    def build(\n        self,\n        *,\n        directory: str | None = None,\n        versions: list[str] | None = None,\n        hooks_only: bool | None = None,\n        clean: bool | None = None,\n        clean_hooks_after: bool | None = None,\n        clean_only: bool | None = False,\n    ) -> Generator[str, None, None]:\n        # Fail early for invalid project metadata\n        self.metadata.validate_fields()\n\n        if directory is None:\n            directory = (\n                self.config.normalize_build_directory(os.environ[BuildEnvVars.LOCATION])\n                if BuildEnvVars.LOCATION in os.environ\n                else self.config.directory\n            )\n\n        if not os.path.isdir(directory):\n            os.makedirs(directory)\n\n        version_api = self.get_version_api()\n\n        versions = versions or self.config.versions\n        if versions:\n            unknown_versions = set(versions) - set(version_api)\n            if unknown_versions:\n                message = (\n                    f'Unknown versions for target `{self.PLUGIN_NAME}`: {\", \".join(map(str, sorted(unknown_versions)))}'\n                )\n                raise ValueError(message)\n\n        if hooks_only is None:\n            hooks_only = env_var_enabled(BuildEnvVars.HOOKS_ONLY)\n\n        configured_build_hooks = self.get_build_hooks(directory)\n        build_hooks = list(configured_build_hooks.values())\n\n        if clean_only:\n            clean = True\n        elif clean is None:\n            clean = env_var_enabled(BuildEnvVars.CLEAN)\n        if clean:\n            if not hooks_only:\n                self.clean(directory, versions)\n\n            for build_hook in build_hooks:\n                build_hook.clean(versions)\n\n            if clean_only:\n                return\n\n        if clean_hooks_after is None:\n            clean_hooks_after = env_var_enabled(BuildEnvVars.CLEAN_HOOKS_AFTER)\n\n        for version in versions:\n            self.app.display_debug(f'Building `{self.PLUGIN_NAME}` version `{version}`')\n\n            build_data = self.get_default_build_data()\n            self.set_build_data_defaults(build_data)\n\n            # Allow inspection of configured build hooks and the order in which they run\n            build_data['build_hooks'] = tuple(configured_build_hooks)\n\n            # Execute all `initialize` build hooks\n            for build_hook in build_hooks:\n                build_hook.initialize(version, build_data)\n\n            if hooks_only:\n                self.app.display_debug(f'Only ran build hooks for `{self.PLUGIN_NAME}` version `{version}`')\n                continue\n\n            # Build the artifact\n            with self.config.set_build_data(build_data):\n                artifact = version_api[version](directory, **build_data)\n\n            # Execute all `finalize` build hooks\n            for build_hook in build_hooks:\n                build_hook.finalize(version, build_data, artifact)\n\n            if clean_hooks_after:\n                for build_hook in build_hooks:\n                    build_hook.clean([version])\n\n            yield artifact\n\n    def recurse_included_files(self) -> Iterable[IncludedFile]:\n        \"\"\"\n        Returns a consistently generated series of file objects for every file that should be distributed. Each file\n        object has three `str` attributes:\n\n        - `path` - the absolute path\n        - `relative_path` - the path relative to the project root; will be an empty string for external files\n        - `distribution_path` - the path to be distributed as\n        \"\"\"\n        yield from self.recurse_selected_project_files()\n        yield from self.recurse_forced_files(self.config.get_force_include())\n\n    def recurse_selected_project_files(self) -> Iterable[IncludedFile]:\n        if self.config.only_include:\n            yield from self.recurse_explicit_files(self.config.only_include)\n        else:\n            yield from self.recurse_project_files()\n\n    def recurse_project_files(self) -> Iterable[IncludedFile]:\n        for root, dirs, files in safe_walk(self.root):\n            relative_path = get_relative_path(root, self.root)\n\n            dirs[:] = sorted(d for d in dirs if not self.config.directory_is_excluded(d, relative_path))\n\n            files.sort()\n            is_package = '__init__.py' in files\n            for f in files:\n                relative_file_path = os.path.join(relative_path, f)\n                distribution_path = self.config.get_distribution_path(relative_file_path)\n                if self.config.path_is_reserved(distribution_path):\n                    continue\n\n                if self.config.include_path(relative_file_path, is_package=is_package):\n                    yield IncludedFile(\n                        os.path.join(root, f), relative_file_path, self.config.get_distribution_path(relative_file_path)\n                    )\n\n    def recurse_forced_files(self, inclusion_map: dict[str, str]) -> Iterable[IncludedFile]:\n        for source, target_path in inclusion_map.items():\n            external = not source.startswith(self.root)\n            if os.path.isfile(source):\n                yield IncludedFile(\n                    source,\n                    '' if external else os.path.relpath(source, self.root),\n                    self.config.get_distribution_path(target_path),\n                )\n            elif os.path.isdir(source):\n                for root, dirs, files in safe_walk(source):\n                    relative_directory = get_relative_path(root, source)\n\n                    dirs[:] = sorted(d for d in dirs if d not in EXCLUDED_DIRECTORIES)\n\n                    files.sort()\n                    for f in files:\n                        relative_file_path = os.path.join(target_path, relative_directory, f)\n                        distribution_path = self.config.get_distribution_path(relative_file_path)\n                        if not self.config.path_is_reserved(distribution_path):\n                            yield IncludedFile(\n                                os.path.join(root, f),\n                                '' if external else relative_file_path,\n                                distribution_path,\n                            )\n            else:\n                msg = f'Forced include not found: {source}'\n                raise FileNotFoundError(msg)\n\n    def recurse_explicit_files(self, inclusion_map: dict[str, str]) -> Iterable[IncludedFile]:\n        for source, target_path in inclusion_map.items():\n            external = not source.startswith(self.root)\n            if os.path.isfile(source):\n                distribution_path = self.config.get_distribution_path(target_path)\n                if not self.config.path_is_reserved(distribution_path):\n                    yield IncludedFile(\n                        source,\n                        '' if external else os.path.relpath(source, self.root),\n                        self.config.get_distribution_path(target_path),\n                    )\n            elif os.path.isdir(source):\n                for root, dirs, files in safe_walk(source):\n                    relative_directory = get_relative_path(root, source)\n\n                    dirs[:] = sorted(d for d in dirs if d not in EXCLUDED_DIRECTORIES)\n\n                    files.sort()\n                    is_package = '__init__.py' in files\n                    for f in files:\n                        relative_file_path = os.path.join(target_path, relative_directory, f)\n                        distribution_path = self.config.get_distribution_path(relative_file_path)\n                        if self.config.path_is_reserved(distribution_path):\n                            continue\n\n                        if self.config.include_path(relative_file_path, explicit=True, is_package=is_package):\n                            yield IncludedFile(\n                                os.path.join(root, f), '' if external else relative_file_path, distribution_path\n                            )\n\n    @property\n    def root(self) -> str:\n        \"\"\"\n        The root of the project tree.\n        \"\"\"\n        return self.__root\n\n    @property\n    def plugin_manager(self) -> PluginManagerBound:\n        if self.__plugin_manager is None:\n            from hatchling.plugin.manager import PluginManager\n\n            self.__plugin_manager = PluginManager()\n\n        return self.__plugin_manager\n\n    @property\n    def metadata(self) -> ProjectMetadata:\n        if self.__metadata is None:\n            from hatchling.metadata.core import ProjectMetadata\n\n            self.__metadata = ProjectMetadata(self.root, self.plugin_manager, self.__raw_config)\n\n        return self.__metadata\n\n    @property\n    def app(self) -> Application:\n        \"\"\"\n        An instance of [Application](../utilities.md#hatchling.bridge.app.Application).\n        \"\"\"\n        if self.__app is None:\n            from hatchling.bridge.app import Application\n\n            self.__app = cast(Application, Application().get_safe_application())\n\n        return self.__app\n\n    @property\n    def raw_config(self) -> dict[str, Any]:\n        if self.__raw_config is None:\n            self.__raw_config = self.metadata.config\n\n        return self.__raw_config\n\n    @property\n    def project_config(self) -> dict[str, Any]:\n        if self.__project_config is None:\n            self.__project_config = self.metadata.core.config\n\n        return self.__project_config\n\n    @property\n    def hatch_config(self) -> dict[str, Any]:\n        if self.__hatch_config is None:\n            self.__hatch_config = self.metadata.hatch.config\n\n        return self.__hatch_config\n\n    @property\n    def config(self) -> BuilderConfigBound:\n        \"\"\"\n        An instance of [BuilderConfig](../utilities.md#hatchling.builders.config.BuilderConfig).\n        \"\"\"\n        if self.__config is None:\n            self.__config = self.get_config_class()(\n                self, self.root, self.PLUGIN_NAME, self.build_config, self.target_config\n            )\n\n        return self.__config\n\n    @property\n    def build_config(self) -> dict[str, Any]:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.build]\n        ```\n        \"\"\"\n        if self.__build_config is None:\n            self.__build_config = self.metadata.hatch.build_config\n\n        return self.__build_config\n\n    @property\n    def target_config(self) -> dict[str, Any]:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.build.targets.<PLUGIN_NAME>]\n        ```\n        \"\"\"\n        if self.__target_config is None:\n            target_config: dict[str, Any] = self.metadata.hatch.build_targets.get(self.PLUGIN_NAME, {})\n            if not isinstance(target_config, dict):\n                message = f'Field `tool.hatch.build.targets.{self.PLUGIN_NAME}` must be a table'\n                raise TypeError(message)\n\n            self.__target_config = target_config\n\n        return self.__target_config\n\n    @property\n    def project_id(self) -> str:\n        if self.__project_id is None:\n            self.__project_id = f'{self.normalize_file_name_component(self.metadata.core.name)}-{self.metadata.version}'\n\n        return self.__project_id\n\n    def get_build_hooks(self, directory: str) -> dict[str, BuildHookInterface]:\n        configured_build_hooks = {}\n        for hook_name, config in self.config.hook_config.items():\n            build_hook = self.plugin_manager.build_hook.get(hook_name)\n            if build_hook is None:\n                from hatchling.plugin.exceptions import UnknownPluginError\n\n                message = f'Unknown build hook: {hook_name}'\n                raise UnknownPluginError(message)\n\n            configured_build_hooks[hook_name] = build_hook(\n                self.root, config, self.config, self.metadata, directory, self.PLUGIN_NAME, self.app\n            )\n\n        return configured_build_hooks\n\n    @abstractmethod\n    def get_version_api(self) -> dict[str, Callable]:\n        \"\"\"\n        A mapping of `str` versions to a callable that is used for building.\n        Each callable must have the following signature:\n\n        ```python\n        def ...(build_dir: str, build_data: dict) -> str:\n        ```\n\n        The return value must be the absolute path to the built artifact.\n        \"\"\"\n\n    def get_default_versions(self) -> list[str]:\n        \"\"\"\n        A list of versions to build when users do not specify any, defaulting to all versions.\n        \"\"\"\n        return list(self.get_version_api())\n\n    def get_default_build_data(self) -> dict[str, Any]:  # noqa: PLR6301\n        \"\"\"\n        A mapping that can be modified by [build hooks](../build-hook/reference.md) to influence the behavior of builds.\n        \"\"\"\n        return {}\n\n    def set_build_data_defaults(self, build_data: dict[str, Any]) -> None:  # noqa: PLR6301\n        build_data.setdefault('artifacts', [])\n        build_data.setdefault('force_include', {})\n\n    def clean(self, directory: str, versions: list[str]) -> None:\n        \"\"\"\n        Called before builds if the `-c`/`--clean` flag was passed to the\n        [`build`](../../cli/reference.md#hatch-build) command.\n        \"\"\"\n\n    @classmethod\n    def get_config_class(cls) -> type[BuilderConfig]:\n        \"\"\"\n        Must return a subclass of [BuilderConfig](../utilities.md#hatchling.builders.config.BuilderConfig).\n        \"\"\"\n        return BuilderConfig\n\n    @staticmethod\n    def normalize_file_name_component(file_name: str) -> str:\n        \"\"\"\n        https://peps.python.org/pep-0427/#escaping-and-unicode\n        \"\"\"\n        return re.sub(r'[^\\w\\d.]+', '_', file_name, flags=re.UNICODE)\n
"},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface.PLUGIN_NAME","title":"PLUGIN_NAME = '' class-attribute instance-attribute","text":"

The name used for selection.

"},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface.app","title":"app: Application property","text":"

An instance of Application.

"},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface.root","title":"root: str property","text":"

The root of the project tree.

"},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface.build_config","title":"build_config: dict[str, Any] property","text":"pyproject.toml hatch.toml 
[tool.hatch.build]\n
[build]\n
"},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface.target_config","title":"target_config: dict[str, Any] property","text":"pyproject.toml hatch.toml 
[tool.hatch.build.targets.<PLUGIN_NAME>]\n
[build.targets.<PLUGIN_NAME>]\n
"},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface.config","title":"config: BuilderConfigBound property","text":"

An instance of BuilderConfig.

"},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface.get_config_class","title":"get_config_class() -> type[BuilderConfig] classmethod","text":"

Must return a subclass of BuilderConfig.

Source code in backend/src/hatchling/builders/plugin/interface.py 
@classmethod\ndef get_config_class(cls) -> type[BuilderConfig]:\n    \"\"\"\n    Must return a subclass of [BuilderConfig](../utilities.md#hatchling.builders.config.BuilderConfig).\n    \"\"\"\n    return BuilderConfig\n
"},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface.get_version_api","title":"get_version_api() -> dict[str, Callable] abstractmethod","text":"

A mapping of str versions to a callable that is used for building. Each callable must have the following signature:

def ...(build_dir: str, build_data: dict) -> str:\n

The return value must be the absolute path to the built artifact.

Source code in backend/src/hatchling/builders/plugin/interface.py 
@abstractmethod\ndef get_version_api(self) -> dict[str, Callable]:\n    \"\"\"\n    A mapping of `str` versions to a callable that is used for building.\n    Each callable must have the following signature:\n\n    ```python\n    def ...(build_dir: str, build_data: dict) -> str:\n    ```\n\n    The return value must be the absolute path to the built artifact.\n    \"\"\"\n
"},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface.get_default_versions","title":"get_default_versions() -> list[str]","text":"

A list of versions to build when users do not specify any, defaulting to all versions.

Source code in backend/src/hatchling/builders/plugin/interface.py 
def get_default_versions(self) -> list[str]:\n    \"\"\"\n    A list of versions to build when users do not specify any, defaulting to all versions.\n    \"\"\"\n    return list(self.get_version_api())\n
"},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface.clean","title":"clean(directory: str, versions: list[str]) -> None","text":"

Called before builds if the -c/--clean flag was passed to the build command.

Source code in backend/src/hatchling/builders/plugin/interface.py 
def clean(self, directory: str, versions: list[str]) -> None:\n    \"\"\"\n    Called before builds if the `-c`/`--clean` flag was passed to the\n    [`build`](../../cli/reference.md#hatch-build) command.\n    \"\"\"\n
"},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface.recurse_included_files","title":"recurse_included_files() -> Iterable[IncludedFile]","text":"

Returns a consistently generated series of file objects for every file that should be distributed. Each file object has three str attributes:

Source code in backend/src/hatchling/builders/plugin/interface.py 
def recurse_included_files(self) -> Iterable[IncludedFile]:\n    \"\"\"\n    Returns a consistently generated series of file objects for every file that should be distributed. Each file\n    object has three `str` attributes:\n\n    - `path` - the absolute path\n    - `relative_path` - the path relative to the project root; will be an empty string for external files\n    - `distribution_path` - the path to be distributed as\n    \"\"\"\n    yield from self.recurse_selected_project_files()\n    yield from self.recurse_forced_files(self.config.get_force_include())\n
"},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface.get_default_build_data","title":"get_default_build_data() -> dict[str, Any]","text":"

A mapping that can be modified by build hooks to influence the behavior of builds.

Source code in backend/src/hatchling/builders/plugin/interface.py 
def get_default_build_data(self) -> dict[str, Any]:  # noqa: PLR6301\n    \"\"\"\n    A mapping that can be modified by [build hooks](../build-hook/reference.md) to influence the behavior of builds.\n    \"\"\"\n    return {}\n
"},{"location":"plugins/builder/sdist/","title":"Source distribution builder","text":"

A source distribution, or sdist, is an archive of Python \"source code\". Although largely unspecified, by convention it should include everything that is required to build a wheel without making network requests.

"},{"location":"plugins/builder/sdist/#configuration","title":"Configuration","text":"

The builder plugin name is sdist.

pyproject.toml hatch.toml 
[tool.hatch.build.targets.sdist]\n
[build.targets.sdist]\n
"},{"location":"plugins/builder/sdist/#options","title":"Options","text":"Option Default Description core-metadata-version \"2.1\" The version of core metadata to use strict-naming true Whether or not file names should contain the normalized version of the project name support-legacy false Whether or not to include a setup.py file to support legacy installation mechanisms"},{"location":"plugins/builder/sdist/#versions","title":"Versions","text":"Version Description standard (default) The latest conventional format"},{"location":"plugins/builder/sdist/#default-file-selection","title":"Default file selection","text":"

When the user has not set any file selection options, all files that are not ignored by your VCS will be included.

Note

The following files are always included and cannot be excluded:

"},{"location":"plugins/builder/sdist/#reproducibility","title":"Reproducibility","text":"

Reproducible builds are supported.

"},{"location":"plugins/builder/sdist/#build-data","title":"Build data","text":"

This is data that can be modified by build hooks.

Data Default Description dependencies Extra project dependencies"},{"location":"plugins/builder/wheel/","title":"Wheel builder","text":"

A wheel is a binary distribution of a Python package that can be installed directly into an environment.

"},{"location":"plugins/builder/wheel/#configuration","title":"Configuration","text":"

The builder plugin name is wheel.

pyproject.toml hatch.toml 
[tool.hatch.build.targets.wheel]\n
[build.targets.wheel]\n
"},{"location":"plugins/builder/wheel/#options","title":"Options","text":"Option Default Description core-metadata-version \"2.1\" The version of core metadata to use shared-data A mapping similar to the forced inclusion option corresponding to data that will be installed globally in a given Python environment, usually under sys.prefix extra-metadata A mapping similar to the forced inclusion option corresponding to extra metadata that will be shipped in a directory named extra_metadata strict-naming true Whether or not file names should contain the normalized version of the project name macos-max-compat true Whether or not on macOS, when build hooks have set the infer_tag build data, the wheel name should signal broad support rather than specific versions for newer SDK versions.Note: The default will become false, and this option eventually removed, sometime after consumers like pip start supporting these newer SDK versions. bypass-selection false Whether or not to suppress the error when one has not defined any file selection options and all heuristics have failed to determine what to ship"},{"location":"plugins/builder/wheel/#versions","title":"Versions","text":"Version Description standard (default) The latest standardized format editable A wheel that only ships .pth files or import hooks for real-time development"},{"location":"plugins/builder/wheel/#default-file-selection","title":"Default file selection","text":"

When the user has not set any file selection options, the project name will be used to determine the package to ship in the following heuristic order:

  1. <NAME>/__init__.py
  2. src/<NAME>/__init__.py
  3. <NAME>.py
  4. <NAMESPACE>/<NAME>/__init__.py

If none of these heuristics are satisfied, an error will be raised.

"},{"location":"plugins/builder/wheel/#reproducibility","title":"Reproducibility","text":"

Reproducible builds are supported.

"},{"location":"plugins/builder/wheel/#build-data","title":"Build data","text":"

This is data that can be modified by build hooks.

Data Default Description tag The full tag part of the filename (e.g. py3-none-any), defaulting to a cross-platform wheel with the supported major versions of Python based on project metadata infer_tag False When tag is not set, this may be enabled to use the one most specific to the platform, Python interpreter, and ABI pure_python True Whether or not to write metadata indicating that the package does not contain any platform-specific files dependencies Extra project dependencies extra_metadata Additional extra-metadata entries, which take precedence in case of conflicts force_include_editable Similar to the force_include option but specifically for the editable version and takes precedence"},{"location":"plugins/environment/reference/","title":"Environment plugins","text":"

See the documentation for environment configuration.

"},{"location":"plugins/environment/reference/#known-third-party","title":"Known third-party","text":""},{"location":"plugins/environment/reference/#installation","title":"Installation","text":"

Any required environment types that are not built-in must be manually installed alongside Hatch or listed in the tool.hatch.env.requires array for automatic management:

pyproject.toml hatch.toml 
[tool.hatch.env]\nrequires = [\n  \"...\",\n]\n
[env]\nrequires = [\n  \"...\",\n]\n
"},{"location":"plugins/environment/reference/#life-cycle","title":"Life cycle","text":"

Whenever an environment is used, the following logic is performed:

Source code in src/hatch/cli/application.py 
def prepare_environment(self, environment: EnvironmentInterface):\n    if not environment.exists():\n        self.env_metadata.reset(environment)\n\n        with self.status(f'Creating environment: {environment.name}'):\n            environment.create()\n\n        if not environment.skip_install:\n            if environment.pre_install_commands:\n                with self.status('Running pre-installation commands'):\n                    self.run_shell_commands(environment, environment.pre_install_commands, source='pre-install')\n\n            if environment.dev_mode:\n                with self.status('Installing project in development mode'):\n                    environment.install_project_dev_mode()\n            else:\n                with self.status('Installing project'):\n                    environment.install_project()\n\n            if environment.post_install_commands:\n                with self.status('Running post-installation commands'):\n                    self.run_shell_commands(environment, environment.post_install_commands, source='post-install')\n\n    new_dep_hash = environment.dependency_hash()\n    current_dep_hash = self.env_metadata.dependency_hash(environment)\n    if new_dep_hash != current_dep_hash:\n        with self.status('Checking dependencies'):\n            dependencies_in_sync = environment.dependencies_in_sync()\n\n        if not dependencies_in_sync:\n            with self.status('Syncing dependencies'):\n                environment.sync_dependencies()\n                new_dep_hash = environment.dependency_hash()\n\n        self.env_metadata.update_dependency_hash(environment, new_dep_hash)\n
"},{"location":"plugins/environment/reference/#build-environments","title":"Build environments","text":"

All environment types should offer support for a special sub-environment in which projects can be built. This environment is used in the following scenarios:

"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface","title":"EnvironmentInterface","text":"

Example usage:

plugin.py hooks.py 
    from hatch.env.plugin.interface import EnvironmentInterface\n\n\n    class SpecialEnvironment(EnvironmentInterface):\n        PLUGIN_NAME = 'special'\n        ...\n
    from hatchling.plugin import hookimpl\n\n    from .plugin import SpecialEnvironment\n\n\n    @hookimpl\n    def hatch_register_environment():\n        return SpecialEnvironment\n
Source code in src/hatch/env/plugin/interface.py 
class EnvironmentInterface(ABC):\n    \"\"\"\n    Example usage:\n\n    ```python tab=\"plugin.py\"\n        from hatch.env.plugin.interface import EnvironmentInterface\n\n\n        class SpecialEnvironment(EnvironmentInterface):\n            PLUGIN_NAME = 'special'\n            ...\n    ```\n\n    ```python tab=\"hooks.py\"\n        from hatchling.plugin import hookimpl\n\n        from .plugin import SpecialEnvironment\n\n\n        @hookimpl\n        def hatch_register_environment():\n            return SpecialEnvironment\n    ```\n    \"\"\"\n\n    PLUGIN_NAME = ''\n    \"\"\"The name used for selection.\"\"\"\n\n    def __init__(\n        self,\n        root,\n        metadata,\n        name,\n        config,\n        matrix_variables,\n        data_directory,\n        isolated_data_directory,\n        platform,\n        verbosity,\n        app=None,\n    ):\n        self.__root = root\n        self.__metadata = metadata\n        self.__name = name\n        self.__config = config\n        self.__matrix_variables = matrix_variables\n        self.__data_directory = data_directory\n        self.__isolated_data_directory = isolated_data_directory\n        self.__platform = platform\n        self.__verbosity = verbosity\n        self.__app = app\n        self.__context = None\n\n        self._system_python = None\n        self._env_vars = None\n        self._env_include = None\n        self._env_exclude = None\n        self._environment_dependencies_complex = None\n        self._environment_dependencies = None\n        self._dependencies_complex = None\n        self._dependencies = None\n        self._platforms = None\n        self._skip_install = None\n        self._dev_mode = None\n        self._features = None\n        self._description = None\n        self._scripts = None\n        self._pre_install_commands = None\n        self._post_install_commands = None\n\n    @property\n    def matrix_variables(self):\n        return self.__matrix_variables\n\n    @property\n    def app(self):\n        \"\"\"\n        An instance of [Application](../utilities.md#hatchling.bridge.app.Application).\n        \"\"\"\n        if self.__app is None:\n            from hatchling.bridge.app import Application\n\n            self.__app = Application().get_safe_application()\n\n        return self.__app\n\n    @property\n    def context(self):\n        if self.__context is None:\n            self.__context = self.get_context()\n\n        return self.__context\n\n    @property\n    def verbosity(self):\n        return self.__verbosity\n\n    @property\n    def root(self):\n        \"\"\"\n        The root of the project tree as a path-like object.\n        \"\"\"\n        return self.__root\n\n    @property\n    def metadata(self):\n        return self.__metadata\n\n    @property\n    def name(self) -> str:\n        \"\"\"\n        The name of the environment.\n        \"\"\"\n        return self.__name\n\n    @property\n    def platform(self):\n        \"\"\"\n        An instance of [Platform](../utilities.md#hatch.utils.platform.Platform).\n        \"\"\"\n        return self.__platform\n\n    @property\n    def data_directory(self):\n        \"\"\"\n        The [directory](../../config/hatch.md#environments) this plugin should use for storage as a path-like object.\n        If the user has not configured one then this will be the same as the\n        [isolated data directory](reference.md#hatch.env.plugin.interface.EnvironmentInterface.isolated_data_directory).\n        \"\"\"\n        return self.__data_directory\n\n    @property\n    def isolated_data_directory(self):\n        \"\"\"\n        The default [directory](../../config/hatch.md#environments) reserved exclusively for this plugin as a path-like\n        object.\n        \"\"\"\n        return self.__isolated_data_directory\n\n    @property\n    def config(self) -> dict:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.envs.<ENV_NAME>]\n        ```\n        \"\"\"\n        return self.__config\n\n    @property\n    def system_python(self):\n        if self._system_python is None:\n            system_python = os.environ.get(AppEnvVars.PYTHON)\n            if system_python == 'self':\n                system_python = sys.executable\n\n            system_python = (\n                system_python\n                or self.platform.modules.shutil.which('python')\n                or self.platform.modules.shutil.which('python3')\n                or sys.executable\n            )\n            if not isabs(system_python):\n                system_python = self.platform.modules.shutil.which(system_python)\n\n            self._system_python = system_python\n\n        return self._system_python\n\n    @property\n    def env_vars(self) -> dict:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.envs.<ENV_NAME>.env-vars]\n        ```\n        \"\"\"\n        if self._env_vars is None:\n            env_vars = self.config.get('env-vars', {})\n            if not isinstance(env_vars, dict):\n                message = f'Field `tool.hatch.envs.{self.name}.env-vars` must be a mapping'\n                raise TypeError(message)\n\n            for key, value in env_vars.items():\n                if not isinstance(value, str):\n                    message = (\n                        f'Environment variable `{key}` of field `tool.hatch.envs.{self.name}.env-vars` must be a string'\n                    )\n                    raise TypeError(message)\n\n            new_env_vars = {}\n            with self.metadata.context.apply_context(self.context):\n                for key, value in env_vars.items():\n                    new_env_vars[key] = self.metadata.context.format(value)\n\n            new_env_vars[AppEnvVars.ENV_ACTIVE] = self.name\n            self._env_vars = new_env_vars\n\n        return self._env_vars\n\n    @property\n    def env_include(self) -> list[str]:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.envs.<ENV_NAME>]\n        env-include = [...]\n        ```\n        \"\"\"\n        if self._env_include is None:\n            env_include = self.config.get('env-include', [])\n            if not isinstance(env_include, list):\n                message = f'Field `tool.hatch.envs.{self.name}.env-include` must be an array'\n                raise TypeError(message)\n\n            for i, pattern in enumerate(env_include, 1):\n                if not isinstance(pattern, str):\n                    message = f'Pattern #{i} of field `tool.hatch.envs.{self.name}.env-include` must be a string'\n                    raise TypeError(message)\n\n            if env_include:\n                self._env_include = ['HATCH_BUILD_*', *env_include]\n            else:\n                self._env_include = env_include\n\n        return self._env_include\n\n    @property\n    def env_exclude(self) -> list[str]:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.envs.<ENV_NAME>]\n        env-exclude = [...]\n        ```\n        \"\"\"\n        if self._env_exclude is None:\n            env_exclude = self.config.get('env-exclude', [])\n            if not isinstance(env_exclude, list):\n                message = f'Field `tool.hatch.envs.{self.name}.env-exclude` must be an array'\n                raise TypeError(message)\n\n            for i, pattern in enumerate(env_exclude, 1):\n                if not isinstance(pattern, str):\n                    message = f'Pattern #{i} of field `tool.hatch.envs.{self.name}.env-exclude` must be a string'\n                    raise TypeError(message)\n\n            self._env_exclude = env_exclude\n\n        return self._env_exclude\n\n    @property\n    def environment_dependencies_complex(self):\n        if self._environment_dependencies_complex is None:\n            from packaging.requirements import InvalidRequirement, Requirement\n\n            dependencies_complex = []\n            with self.apply_context():\n                for option in ('dependencies', 'extra-dependencies'):\n                    dependencies = self.config.get(option, [])\n                    if not isinstance(dependencies, list):\n                        message = f'Field `tool.hatch.envs.{self.name}.{option}` must be an array'\n                        raise TypeError(message)\n\n                    for i, entry in enumerate(dependencies, 1):\n                        if not isinstance(entry, str):\n                            message = (\n                                f'Dependency #{i} of field `tool.hatch.envs.{self.name}.{option}` must be a string'\n                            )\n                            raise TypeError(message)\n\n                        try:\n                            dependencies_complex.append(Requirement(self.metadata.context.format(entry)))\n                        except InvalidRequirement as e:\n                            message = f'Dependency #{i} of field `tool.hatch.envs.{self.name}.{option}` is invalid: {e}'\n                            raise ValueError(message) from None\n\n            self._environment_dependencies_complex = dependencies_complex\n\n        return self._environment_dependencies_complex\n\n    @property\n    def environment_dependencies(self) -> list[str]:\n        \"\"\"\n        The list of all [environment dependencies](../../config/environment/overview.md#dependencies).\n        \"\"\"\n        if self._environment_dependencies is None:\n            self._environment_dependencies = [str(dependency) for dependency in self.environment_dependencies_complex]\n\n        return self._environment_dependencies\n\n    @property\n    def dependencies_complex(self):\n        if self._dependencies_complex is None:\n            all_dependencies_complex = list(self.environment_dependencies_complex)\n\n            # Ensure these are checked last to speed up initial environment creation since\n            # they will already be installed along with the project\n            if (not self.skip_install and self.dev_mode) or self.features:\n                from hatch.utils.dep import get_project_dependencies_complex\n\n                dependencies_complex, optional_dependencies_complex = get_project_dependencies_complex(self)\n\n                if not self.skip_install and self.dev_mode:\n                    all_dependencies_complex.extend(dependencies_complex.values())\n\n                for feature in self.features:\n                    if feature not in optional_dependencies_complex:\n                        message = (\n                            f'Feature `{feature}` of field `tool.hatch.envs.{self.name}.features` is not '\n                            f'defined in the dynamic field `project.optional-dependencies`'\n                        )\n                        raise ValueError(message)\n\n                    all_dependencies_complex.extend(optional_dependencies_complex[feature].values())\n\n            self._dependencies_complex = all_dependencies_complex\n\n        return self._dependencies_complex\n\n    @property\n    def dependencies(self) -> list[str]:\n        \"\"\"\n        The list of all [project dependencies](../../config/metadata.md#dependencies) (if\n        [installed](../../config/environment/overview.md#skip-install) and in\n        [dev mode](../../config/environment/overview.md#dev-mode)), selected\n        [optional dependencies](../../config/environment/overview.md#features), and\n        [environment dependencies](../../config/environment/overview.md#dependencies).\n        \"\"\"\n        if self._dependencies is None:\n            self._dependencies = [str(dependency) for dependency in self.dependencies_complex]\n\n        return self._dependencies\n\n    @property\n    def platforms(self) -> list[str]:\n        \"\"\"\n        All names are stored as their lower-cased version.\n\n        ```toml config-example\n        [tool.hatch.envs.<ENV_NAME>]\n        platforms = [...]\n        ```\n        \"\"\"\n        if self._platforms is None:\n            platforms = self.config.get('platforms', [])\n            if not isinstance(platforms, list):\n                message = f'Field `tool.hatch.envs.{self.name}.platforms` must be an array'\n                raise TypeError(message)\n\n            for i, command in enumerate(platforms, 1):\n                if not isinstance(command, str):\n                    message = f'Platform #{i} of field `tool.hatch.envs.{self.name}.platforms` must be a string'\n                    raise TypeError(message)\n\n            self._platforms = [platform.lower() for platform in platforms]\n\n        return self._platforms\n\n    @property\n    def skip_install(self) -> bool:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.envs.<ENV_NAME>]\n        skip-install = ...\n        ```\n        \"\"\"\n        if self._skip_install is None:\n            skip_install = self.config.get('skip-install', not self.metadata.has_project_file())\n            if not isinstance(skip_install, bool):\n                message = f'Field `tool.hatch.envs.{self.name}.skip-install` must be a boolean'\n                raise TypeError(message)\n\n            self._skip_install = skip_install\n\n        return self._skip_install\n\n    @property\n    def dev_mode(self) -> bool:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.envs.<ENV_NAME>]\n        dev-mode = ...\n        ```\n        \"\"\"\n        if self._dev_mode is None:\n            dev_mode = self.config.get('dev-mode', True)\n            if not isinstance(dev_mode, bool):\n                message = f'Field `tool.hatch.envs.{self.name}.dev-mode` must be a boolean'\n                raise TypeError(message)\n\n            self._dev_mode = dev_mode\n\n        return self._dev_mode\n\n    @property\n    def features(self):\n        if self._features is None:\n            from hatchling.metadata.utils import normalize_project_name\n\n            features = self.config.get('features', [])\n            if not isinstance(features, list):\n                message = f'Field `tool.hatch.envs.{self.name}.features` must be an array of strings'\n                raise TypeError(message)\n\n            all_features = set()\n            for i, feature in enumerate(features, 1):\n                if not isinstance(feature, str):\n                    message = f'Feature #{i} of field `tool.hatch.envs.{self.name}.features` must be a string'\n                    raise TypeError(message)\n\n                if not feature:\n                    message = f'Feature #{i} of field `tool.hatch.envs.{self.name}.features` cannot be an empty string'\n                    raise ValueError(message)\n\n                normalized_feature = (\n                    feature\n                    if self.metadata.hatch.metadata.allow_ambiguous_features\n                    else normalize_project_name(feature)\n                )\n                if (\n                    not self.metadata.hatch.metadata.hook_config\n                    and normalized_feature not in self.metadata.core.optional_dependencies\n                ):\n                    message = (\n                        f'Feature `{normalized_feature}` of field `tool.hatch.envs.{self.name}.features` is not '\n                        f'defined in field `project.optional-dependencies`'\n                    )\n                    raise ValueError(message)\n\n                all_features.add(normalized_feature)\n\n            self._features = sorted(all_features)\n\n        return self._features\n\n    @property\n    def description(self) -> str:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.envs.<ENV_NAME>]\n        description = ...\n        ```\n        \"\"\"\n        if self._description is None:\n            description = self.config.get('description', '')\n            if not isinstance(description, str):\n                message = f'Field `tool.hatch.envs.{self.name}.description` must be a string'\n                raise TypeError(message)\n\n            self._description = description\n\n        return self._description\n\n    @property\n    def scripts(self):\n        if self._scripts is None:\n            script_config = self.config.get('scripts', {})\n            if not isinstance(script_config, dict):\n                message = f'Field `tool.hatch.envs.{self.name}.scripts` must be a table'\n                raise TypeError(message)\n\n            config = {}\n\n            for name, data in script_config.items():\n                if ' ' in name:\n                    message = (\n                        f'Script name `{name}` in field `tool.hatch.envs.{self.name}.scripts` must not contain spaces'\n                    )\n                    raise ValueError(message)\n\n                commands = []\n\n                if isinstance(data, str):\n                    commands.append(data)\n                elif isinstance(data, list):\n                    for i, command in enumerate(data, 1):\n                        if not isinstance(command, str):\n                            message = (\n                                f'Command #{i} in field `tool.hatch.envs.{self.name}.scripts.{name}` must be a string'\n                            )\n                            raise TypeError(message)\n\n                        commands.append(command)\n                else:\n                    message = (\n                        f'Field `tool.hatch.envs.{self.name}.scripts.{name}` must be a string or an array of strings'\n                    )\n                    raise TypeError(message)\n\n                config[name] = commands\n\n            seen = {}\n            active = []\n            for script_name, commands in config.items():\n                commands[:] = expand_script_commands(self.name, script_name, commands, config, seen, active)\n\n            self._scripts = config\n\n        return self._scripts\n\n    @property\n    def pre_install_commands(self):\n        if self._pre_install_commands is None:\n            pre_install_commands = self.config.get('pre-install-commands', [])\n            if not isinstance(pre_install_commands, list):\n                message = f'Field `tool.hatch.envs.{self.name}.pre-install-commands` must be an array'\n                raise TypeError(message)\n\n            for i, command in enumerate(pre_install_commands, 1):\n                if not isinstance(command, str):\n                    message = (\n                        f'Command #{i} of field `tool.hatch.envs.{self.name}.pre-install-commands` must be a string'\n                    )\n                    raise TypeError(message)\n\n            self._pre_install_commands = list(pre_install_commands)\n\n        return self._pre_install_commands\n\n    @property\n    def post_install_commands(self):\n        if self._post_install_commands is None:\n            post_install_commands = self.config.get('post-install-commands', [])\n            if not isinstance(post_install_commands, list):\n                message = f'Field `tool.hatch.envs.{self.name}.post-install-commands` must be an array'\n                raise TypeError(message)\n\n            for i, command in enumerate(post_install_commands, 1):\n                if not isinstance(command, str):\n                    message = (\n                        f'Command #{i} of field `tool.hatch.envs.{self.name}.post-install-commands` must be a string'\n                    )\n                    raise TypeError(message)\n\n            self._post_install_commands = list(post_install_commands)\n\n        return self._post_install_commands\n\n    def activate(self):\n        \"\"\"\n        A convenience method called when using the environment as a context manager:\n\n        ```python\n        with environment: ...\n        ```\n        \"\"\"\n\n    def deactivate(self):\n        \"\"\"\n        A convenience method called after using the environment as a context manager:\n\n        ```python\n        with environment: ...\n        ```\n        \"\"\"\n\n    @abstractmethod\n    def find(self):\n        \"\"\"\n        :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n        This should return information about how to locate the environment or represent its ID in\n        some way. Additionally, this is expected to return something even if the environment is\n        [incompatible](reference.md#hatch.env.plugin.interface.EnvironmentInterface.check_compatibility).\n        \"\"\"\n\n    @abstractmethod\n    def create(self):\n        \"\"\"\n        :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n        This should perform the necessary steps to set up the environment.\n        \"\"\"\n\n    @abstractmethod\n    def remove(self):\n        \"\"\"\n        :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n        This should perform the necessary steps to completely remove the environment from the system and will only\n        be triggered manually by users with the [`env remove`](../../cli/reference.md#hatch-env-remove) or\n        [`env prune`](../../cli/reference.md#hatch-env-prune) commands.\n\n        If the\n        [build environment](reference.md#hatch.env.plugin.interface.EnvironmentInterface.build_environment)\n        has a caching mechanism, this should remove that as well.\n        \"\"\"\n\n    @abstractmethod\n    def exists(self) -> bool:\n        \"\"\"\n        :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n        This should indicate whether or not the environment has already been created.\n        \"\"\"\n\n    @abstractmethod\n    def install_project(self):\n        \"\"\"\n        :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n        This should install the project in the environment.\n        \"\"\"\n\n    @abstractmethod\n    def install_project_dev_mode(self):\n        \"\"\"\n        :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n        This should install the project in the environment such that the environment\n        always reflects the current state of the project.\n        \"\"\"\n\n    @abstractmethod\n    def dependencies_in_sync(self) -> bool:\n        \"\"\"\n        :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n        This should indicate whether or not the environment is compatible with the current\n        [dependencies](reference.md#hatch.env.plugin.interface.EnvironmentInterface.dependencies).\n        \"\"\"\n\n    @abstractmethod\n    def sync_dependencies(self):\n        \"\"\"\n        :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n        This should install the\n        [dependencies](reference.md#hatch.env.plugin.interface.EnvironmentInterface.dependencies)\n        in the environment.\n        \"\"\"\n\n    def dependency_hash(self):\n        \"\"\"\n        This should return a hash of the environment's\n        [dependencies](reference.md#hatch.env.plugin.interface.EnvironmentInterface.dependencies)\n        and any other data that is handled by the\n        [sync_dependencies](reference.md#hatch.env.plugin.interface.EnvironmentInterface.sync_dependencies)\n        and\n        [dependencies_in_sync](reference.md#hatch.env.plugin.interface.EnvironmentInterface.dependencies_in_sync)\n        methods.\n        \"\"\"\n        from hatch.utils.dep import hash_dependencies\n\n        return hash_dependencies(self.dependencies_complex)\n\n    @contextmanager\n    def build_environment(\n        self,\n        dependencies: list[str],  # noqa: ARG002\n    ):\n        \"\"\"\n        This should set up an isolated environment in which to [`build`](../../cli/reference.md#hatch-build) the project\n        given a set of dependencies and must be a context manager:\n\n        ```python\n        with environment.build_environment([...]): ...\n        ```\n\n        The build environment should reflect any\n        [environment variables](reference.md#hatch.env.plugin.interface.EnvironmentInterface.get_env_vars)\n        the user defined either currently or at the time of\n        [creation](reference.md#hatch.env.plugin.interface.EnvironmentInterface.create).\n        \"\"\"\n        with self.get_env_vars():\n            yield\n\n    def run_builder(\n        self,\n        build_environment,  # noqa: ARG002\n        **kwargs,\n    ):\n        \"\"\"\n        This will be called when the\n        [build environment](reference.md#hatch.env.plugin.interface.EnvironmentInterface.build_environment)\n        is active:\n\n        ```python\n        with environment.build_environment([...]) as build_env:\n            process = environment.run_builder(build_env, ...)\n        ```\n\n        This should return the standard library's\n        [subprocess.CompletedProcess](https://docs.python.org/3/library/subprocess.html#subprocess.CompletedProcess).\n        The command is constructed by passing all keyword arguments to\n        [construct_build_command](reference.md#hatch.env.plugin.interface.EnvironmentInterface.construct_build_command).\n\n        For an example, open the default implementation below:\n        \"\"\"\n        return self.platform.run_command(self.construct_build_command(**kwargs))\n\n    def build_environment_exists(self):  # noqa: PLR6301\n        \"\"\"\n        If the\n        [build environment](reference.md#hatch.env.plugin.interface.EnvironmentInterface.build_environment)\n        has a caching mechanism, this should indicate whether or not it has already been created.\n        \"\"\"\n        return False\n\n    def enter_shell(\n        self,\n        name: str,  # noqa: ARG002\n        path: str,\n        args: Iterable[str],\n    ):\n        \"\"\"\n        Spawn a [shell](../../config/hatch.md#shell) within the environment.\n\n        This should either use\n        [command_context](reference.md#hatch.env.plugin.interface.EnvironmentInterface.command_context)\n        directly or provide the same guarantee.\n        \"\"\"\n        with self.command_context():\n            self.platform.exit_with_command([path, *args])\n\n    def run_shell_command(self, command: str, **kwargs):\n        \"\"\"\n        This should return the standard library's\n        [subprocess.CompletedProcess](https://docs.python.org/3/library/subprocess.html#subprocess.CompletedProcess)\n        and will always be called when the\n        [command_context](reference.md#hatch.env.plugin.interface.EnvironmentInterface.command_context)\n        is active, with the expectation of providing the same guarantee.\n        \"\"\"\n        kwargs.setdefault('shell', True)\n        return self.platform.run_command(command, **kwargs)\n\n    @contextmanager\n    def command_context(self):\n        \"\"\"\n        A context manager that when active should make executed shell commands reflect any\n        [environment variables](reference.md#hatch.env.plugin.interface.EnvironmentInterface.get_env_vars)\n        the user defined either currently or at the time of\n        [creation](reference.md#hatch.env.plugin.interface.EnvironmentInterface.create).\n\n        For an example, open the default implementation below:\n        \"\"\"\n        with self.get_env_vars():\n            yield\n\n    def resolve_commands(self, commands: list[str]):\n        \"\"\"\n        This expands each command into one or more commands based on any\n        [scripts](../../config/environment/overview.md#scripts) that the user defined.\n        \"\"\"\n        for command in commands:\n            yield from self.expand_command(command)\n\n    def expand_command(self, command):\n        possible_script, args, _ignore_exit_code = parse_script_command(command)\n\n        # Indicate undefined\n        if not args:\n            args = None\n\n        with self.apply_context():\n            if possible_script in self.scripts:\n                for cmd in self.scripts[possible_script]:\n                    yield self.metadata.context.format(cmd, args=args).strip()\n            else:\n                yield self.metadata.context.format(command, args=args).strip()\n\n    def construct_build_command(  # noqa: PLR6301\n        self,\n        *,\n        directory=None,\n        targets=(),\n        hooks_only=False,\n        no_hooks=False,\n        clean=False,\n        clean_hooks_after=False,\n        clean_only=False,\n    ):\n        \"\"\"\n        This is the canonical way [`build`](../../cli/reference.md#hatch-build) command options are translated to\n        a subprocess command issued to [builders](../builder/reference.md).\n        \"\"\"\n        command = ['python', '-u', '-m', 'hatchling', 'build']\n\n        if directory:\n            command.extend(('--directory', directory))\n\n        if targets:\n            for target in targets:\n                command.extend(('--target', target))\n\n        if hooks_only:\n            command.append('--hooks-only')\n\n        if no_hooks:\n            command.append('--no-hooks')\n\n        if clean:\n            command.append('--clean')\n\n        if clean_hooks_after:\n            command.append('--clean-hooks-after')\n\n        if clean_only:\n            command.append('--clean-only')\n\n        return command\n\n    def construct_pip_install_command(self, args: list[str]):\n        \"\"\"\n        A convenience method for constructing a [`pip install`](https://pip.pypa.io/en/stable/cli/pip_install/)\n        command with the given verbosity. The default verbosity is set to one less than Hatch's verbosity.\n        \"\"\"\n        command = ['python', '-u', '-m', 'pip', 'install', '--disable-pip-version-check', '--no-python-version-warning']\n\n        # Default to -1 verbosity\n        add_verbosity_flag(command, self.verbosity, adjustment=-1)\n\n        command.extend(args)\n        return command\n\n    def join_command_args(self, args: list[str]):\n        \"\"\"\n        This is used by the [`run`](../../cli/reference.md#hatch-run) command to construct the root command string\n        from the received arguments.\n        \"\"\"\n        return self.platform.join_command_args(args)\n\n    def apply_features(self, requirement: str):\n        \"\"\"\n        A convenience method that applies any user defined [features](../../config/environment/overview.md#features)\n        to the given requirement.\n        \"\"\"\n        if self.features:\n            features = ','.join(self.features)\n            return f'{requirement}[{features}]'\n\n        return requirement\n\n    def check_compatibility(self):\n        \"\"\"\n        This raises an exception if the environment is not compatible with the user's setup. The default behavior\n        checks for [platform compatibility](../../config/environment/overview.md#supported-platforms)\n        and any method override should keep this check.\n\n        This check is never performed if the environment has been\n        [created](reference.md#hatch.env.plugin.interface.EnvironmentInterface.create).\n        \"\"\"\n        if self.platforms and self.platform.name not in self.platforms:\n            message = 'unsupported platform'\n            raise OSError(message)\n\n    def get_env_vars(self) -> EnvVars:\n        \"\"\"\n        Returns a mapping of environment variables that should be available to the environment. The object can\n        be used as a context manager to temporarily apply the environment variables to the current process.\n\n        !!! note\n            The environment variable `HATCH_ENV_ACTIVE` will always be set to the name of the environment.\n        \"\"\"\n        return EnvVars(self.env_vars, self.env_include, self.env_exclude)\n\n    def get_env_var_option(self, option: str) -> str:\n        \"\"\"\n        Returns the value of the upper-cased environment variable `HATCH_ENV_TYPE_<PLUGIN_NAME>_<option>`.\n        \"\"\"\n        return os.environ.get(f'{AppEnvVars.ENV_OPTION_PREFIX}{self.PLUGIN_NAME}_{option}'.upper(), '')\n\n    def get_context(self):\n        \"\"\"\n        Returns a subclass of\n        [EnvironmentContextFormatter](../utilities.md#hatch.env.context.EnvironmentContextFormatter).\n        \"\"\"\n        from hatch.env.context import EnvironmentContextFormatter\n\n        return EnvironmentContextFormatter(self)\n\n    @staticmethod\n    def get_option_types() -> dict:\n        \"\"\"\n        Returns a mapping of supported options to their respective types so that they can be used by\n        [overrides](../../config/environment/advanced.md#option-overrides).\n        \"\"\"\n        return {}\n\n    @contextmanager\n    def apply_context(self):\n        with self.get_env_vars(), self.metadata.context.apply_context(self.context):\n            yield\n\n    def __enter__(self):\n        self.activate()\n        return self\n\n    def __exit__(self, exc_type, exc_value, traceback):\n        self.deactivate()\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.PLUGIN_NAME","title":"PLUGIN_NAME = '' class-attribute instance-attribute","text":"

The name used for selection.

"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.app","title":"app property","text":"

An instance of Application.

"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.root","title":"root property","text":"

The root of the project tree as a path-like object.

"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.name","title":"name: str property","text":"

The name of the environment.

"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.data_directory","title":"data_directory property","text":"

The directory this plugin should use for storage as a path-like object. If the user has not configured one then this will be the same as the isolated data directory.

"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.isolated_data_directory","title":"isolated_data_directory property","text":"

The default directory reserved exclusively for this plugin as a path-like object.

"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.config","title":"config: dict property","text":"pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\n
[envs.<ENV_NAME>]\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.platform","title":"platform property","text":"

An instance of Platform.

"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.environment_dependencies","title":"environment_dependencies: list[str] property","text":"

The list of all environment dependencies.

"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.dependencies","title":"dependencies: list[str] property","text":"

The list of all project dependencies (if installed and in dev mode), selected optional dependencies, and environment dependencies.

"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.env_vars","title":"env_vars: dict property","text":"pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>.env-vars]\n
[envs.<ENV_NAME>.env-vars]\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.env_include","title":"env_include: list[str] property","text":"pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\nenv-include = [...]\n
[envs.<ENV_NAME>]\nenv-include = [...]\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.env_exclude","title":"env_exclude: list[str] property","text":"pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\nenv-exclude = [...]\n
[envs.<ENV_NAME>]\nenv-exclude = [...]\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.platforms","title":"platforms: list[str] property","text":"

All names are stored as their lower-cased version.

pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\nplatforms = [...]\n
[envs.<ENV_NAME>]\nplatforms = [...]\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.skip_install","title":"skip_install: bool property","text":"pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\nskip-install = ...\n
[envs.<ENV_NAME>]\nskip-install = ...\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.dev_mode","title":"dev_mode: bool property","text":"pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\ndev-mode = ...\n
[envs.<ENV_NAME>]\ndev-mode = ...\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.description","title":"description: str property","text":"pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\ndescription = ...\n
[envs.<ENV_NAME>]\ndescription = ...\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.activate","title":"activate()","text":"

A convenience method called when using the environment as a context manager:

with environment: ...\n
Source code in src/hatch/env/plugin/interface.py 
def activate(self):\n    \"\"\"\n    A convenience method called when using the environment as a context manager:\n\n    ```python\n    with environment: ...\n    ```\n    \"\"\"\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.deactivate","title":"deactivate()","text":"

A convenience method called after using the environment as a context manager:

with environment: ...\n
Source code in src/hatch/env/plugin/interface.py 
def deactivate(self):\n    \"\"\"\n    A convenience method called after using the environment as a context manager:\n\n    ```python\n    with environment: ...\n    ```\n    \"\"\"\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.find","title":"find() abstractmethod","text":"

REQUIRED

This should return information about how to locate the environment or represent its ID in some way. Additionally, this is expected to return something even if the environment is incompatible.

Source code in src/hatch/env/plugin/interface.py 
@abstractmethod\ndef find(self):\n    \"\"\"\n    :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n    This should return information about how to locate the environment or represent its ID in\n    some way. Additionally, this is expected to return something even if the environment is\n    [incompatible](reference.md#hatch.env.plugin.interface.EnvironmentInterface.check_compatibility).\n    \"\"\"\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.create","title":"create() abstractmethod","text":"

REQUIRED

This should perform the necessary steps to set up the environment.

Source code in src/hatch/env/plugin/interface.py 
@abstractmethod\ndef create(self):\n    \"\"\"\n    :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n    This should perform the necessary steps to set up the environment.\n    \"\"\"\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.remove","title":"remove() abstractmethod","text":"

REQUIRED

This should perform the necessary steps to completely remove the environment from the system and will only be triggered manually by users with the env remove or env prune commands.

If the build environment has a caching mechanism, this should remove that as well.

Source code in src/hatch/env/plugin/interface.py 
@abstractmethod\ndef remove(self):\n    \"\"\"\n    :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n    This should perform the necessary steps to completely remove the environment from the system and will only\n    be triggered manually by users with the [`env remove`](../../cli/reference.md#hatch-env-remove) or\n    [`env prune`](../../cli/reference.md#hatch-env-prune) commands.\n\n    If the\n    [build environment](reference.md#hatch.env.plugin.interface.EnvironmentInterface.build_environment)\n    has a caching mechanism, this should remove that as well.\n    \"\"\"\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.exists","title":"exists() -> bool abstractmethod","text":"

REQUIRED

This should indicate whether or not the environment has already been created.

Source code in src/hatch/env/plugin/interface.py 
@abstractmethod\ndef exists(self) -> bool:\n    \"\"\"\n    :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n    This should indicate whether or not the environment has already been created.\n    \"\"\"\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.install_project","title":"install_project() abstractmethod","text":"

REQUIRED

This should install the project in the environment.

Source code in src/hatch/env/plugin/interface.py 
@abstractmethod\ndef install_project(self):\n    \"\"\"\n    :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n    This should install the project in the environment.\n    \"\"\"\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.install_project_dev_mode","title":"install_project_dev_mode() abstractmethod","text":"

REQUIRED

This should install the project in the environment such that the environment always reflects the current state of the project.

Source code in src/hatch/env/plugin/interface.py 
@abstractmethod\ndef install_project_dev_mode(self):\n    \"\"\"\n    :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n    This should install the project in the environment such that the environment\n    always reflects the current state of the project.\n    \"\"\"\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.dependencies_in_sync","title":"dependencies_in_sync() -> bool abstractmethod","text":"

REQUIRED

This should indicate whether or not the environment is compatible with the current dependencies.

Source code in src/hatch/env/plugin/interface.py 
@abstractmethod\ndef dependencies_in_sync(self) -> bool:\n    \"\"\"\n    :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n    This should indicate whether or not the environment is compatible with the current\n    [dependencies](reference.md#hatch.env.plugin.interface.EnvironmentInterface.dependencies).\n    \"\"\"\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.sync_dependencies","title":"sync_dependencies() abstractmethod","text":"

REQUIRED

This should install the dependencies in the environment.

Source code in src/hatch/env/plugin/interface.py 
@abstractmethod\ndef sync_dependencies(self):\n    \"\"\"\n    :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n    This should install the\n    [dependencies](reference.md#hatch.env.plugin.interface.EnvironmentInterface.dependencies)\n    in the environment.\n    \"\"\"\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.dependency_hash","title":"dependency_hash()","text":"

This should return a hash of the environment's dependencies and any other data that is handled by the sync_dependencies and dependencies_in_sync methods.

Source code in src/hatch/env/plugin/interface.py 
def dependency_hash(self):\n    \"\"\"\n    This should return a hash of the environment's\n    [dependencies](reference.md#hatch.env.plugin.interface.EnvironmentInterface.dependencies)\n    and any other data that is handled by the\n    [sync_dependencies](reference.md#hatch.env.plugin.interface.EnvironmentInterface.sync_dependencies)\n    and\n    [dependencies_in_sync](reference.md#hatch.env.plugin.interface.EnvironmentInterface.dependencies_in_sync)\n    methods.\n    \"\"\"\n    from hatch.utils.dep import hash_dependencies\n\n    return hash_dependencies(self.dependencies_complex)\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.build_environment","title":"build_environment(dependencies: list[str])","text":"

This should set up an isolated environment in which to build the project given a set of dependencies and must be a context manager:

with environment.build_environment([...]): ...\n

The build environment should reflect any environment variables the user defined either currently or at the time of creation.

Source code in src/hatch/env/plugin/interface.py 
@contextmanager\ndef build_environment(\n    self,\n    dependencies: list[str],  # noqa: ARG002\n):\n    \"\"\"\n    This should set up an isolated environment in which to [`build`](../../cli/reference.md#hatch-build) the project\n    given a set of dependencies and must be a context manager:\n\n    ```python\n    with environment.build_environment([...]): ...\n    ```\n\n    The build environment should reflect any\n    [environment variables](reference.md#hatch.env.plugin.interface.EnvironmentInterface.get_env_vars)\n    the user defined either currently or at the time of\n    [creation](reference.md#hatch.env.plugin.interface.EnvironmentInterface.create).\n    \"\"\"\n    with self.get_env_vars():\n        yield\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.build_environment_exists","title":"build_environment_exists()","text":"

If the build environment has a caching mechanism, this should indicate whether or not it has already been created.

Source code in src/hatch/env/plugin/interface.py 
def build_environment_exists(self):  # noqa: PLR6301\n    \"\"\"\n    If the\n    [build environment](reference.md#hatch.env.plugin.interface.EnvironmentInterface.build_environment)\n    has a caching mechanism, this should indicate whether or not it has already been created.\n    \"\"\"\n    return False\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.run_builder","title":"run_builder(build_environment, **kwargs)","text":"

This will be called when the build environment is active:

with environment.build_environment([...]) as build_env:\n    process = environment.run_builder(build_env, ...)\n

This should return the standard library's subprocess.CompletedProcess. The command is constructed by passing all keyword arguments to construct_build_command.

For an example, open the default implementation below:

Source code in src/hatch/env/plugin/interface.py 
def run_builder(\n    self,\n    build_environment,  # noqa: ARG002\n    **kwargs,\n):\n    \"\"\"\n    This will be called when the\n    [build environment](reference.md#hatch.env.plugin.interface.EnvironmentInterface.build_environment)\n    is active:\n\n    ```python\n    with environment.build_environment([...]) as build_env:\n        process = environment.run_builder(build_env, ...)\n    ```\n\n    This should return the standard library's\n    [subprocess.CompletedProcess](https://docs.python.org/3/library/subprocess.html#subprocess.CompletedProcess).\n    The command is constructed by passing all keyword arguments to\n    [construct_build_command](reference.md#hatch.env.plugin.interface.EnvironmentInterface.construct_build_command).\n\n    For an example, open the default implementation below:\n    \"\"\"\n    return self.platform.run_command(self.construct_build_command(**kwargs))\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.construct_build_command","title":"construct_build_command(*, directory=None, targets=(), hooks_only=False, no_hooks=False, clean=False, clean_hooks_after=False, clean_only=False)","text":"

This is the canonical way build command options are translated to a subprocess command issued to builders.

Source code in src/hatch/env/plugin/interface.py 
def construct_build_command(  # noqa: PLR6301\n    self,\n    *,\n    directory=None,\n    targets=(),\n    hooks_only=False,\n    no_hooks=False,\n    clean=False,\n    clean_hooks_after=False,\n    clean_only=False,\n):\n    \"\"\"\n    This is the canonical way [`build`](../../cli/reference.md#hatch-build) command options are translated to\n    a subprocess command issued to [builders](../builder/reference.md).\n    \"\"\"\n    command = ['python', '-u', '-m', 'hatchling', 'build']\n\n    if directory:\n        command.extend(('--directory', directory))\n\n    if targets:\n        for target in targets:\n            command.extend(('--target', target))\n\n    if hooks_only:\n        command.append('--hooks-only')\n\n    if no_hooks:\n        command.append('--no-hooks')\n\n    if clean:\n        command.append('--clean')\n\n    if clean_hooks_after:\n        command.append('--clean-hooks-after')\n\n    if clean_only:\n        command.append('--clean-only')\n\n    return command\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.command_context","title":"command_context()","text":"

A context manager that when active should make executed shell commands reflect any environment variables the user defined either currently or at the time of creation.

For an example, open the default implementation below:

Source code in src/hatch/env/plugin/interface.py 
@contextmanager\ndef command_context(self):\n    \"\"\"\n    A context manager that when active should make executed shell commands reflect any\n    [environment variables](reference.md#hatch.env.plugin.interface.EnvironmentInterface.get_env_vars)\n    the user defined either currently or at the time of\n    [creation](reference.md#hatch.env.plugin.interface.EnvironmentInterface.create).\n\n    For an example, open the default implementation below:\n    \"\"\"\n    with self.get_env_vars():\n        yield\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.enter_shell","title":"enter_shell(name: str, path: str, args: Iterable[str])","text":"

Spawn a shell within the environment.

This should either use command_context directly or provide the same guarantee.

Source code in src/hatch/env/plugin/interface.py 
def enter_shell(\n    self,\n    name: str,  # noqa: ARG002\n    path: str,\n    args: Iterable[str],\n):\n    \"\"\"\n    Spawn a [shell](../../config/hatch.md#shell) within the environment.\n\n    This should either use\n    [command_context](reference.md#hatch.env.plugin.interface.EnvironmentInterface.command_context)\n    directly or provide the same guarantee.\n    \"\"\"\n    with self.command_context():\n        self.platform.exit_with_command([path, *args])\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.run_shell_command","title":"run_shell_command(command: str, **kwargs)","text":"

This should return the standard library's subprocess.CompletedProcess and will always be called when the command_context is active, with the expectation of providing the same guarantee.

Source code in src/hatch/env/plugin/interface.py 
def run_shell_command(self, command: str, **kwargs):\n    \"\"\"\n    This should return the standard library's\n    [subprocess.CompletedProcess](https://docs.python.org/3/library/subprocess.html#subprocess.CompletedProcess)\n    and will always be called when the\n    [command_context](reference.md#hatch.env.plugin.interface.EnvironmentInterface.command_context)\n    is active, with the expectation of providing the same guarantee.\n    \"\"\"\n    kwargs.setdefault('shell', True)\n    return self.platform.run_command(command, **kwargs)\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.resolve_commands","title":"resolve_commands(commands: list[str])","text":"

This expands each command into one or more commands based on any scripts that the user defined.

Source code in src/hatch/env/plugin/interface.py 
def resolve_commands(self, commands: list[str]):\n    \"\"\"\n    This expands each command into one or more commands based on any\n    [scripts](../../config/environment/overview.md#scripts) that the user defined.\n    \"\"\"\n    for command in commands:\n        yield from self.expand_command(command)\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.get_env_vars","title":"get_env_vars() -> EnvVars","text":"

Returns a mapping of environment variables that should be available to the environment. The object can be used as a context manager to temporarily apply the environment variables to the current process.

Note

The environment variable HATCH_ENV_ACTIVE will always be set to the name of the environment.

Source code in src/hatch/env/plugin/interface.py 
def get_env_vars(self) -> EnvVars:\n    \"\"\"\n    Returns a mapping of environment variables that should be available to the environment. The object can\n    be used as a context manager to temporarily apply the environment variables to the current process.\n\n    !!! note\n        The environment variable `HATCH_ENV_ACTIVE` will always be set to the name of the environment.\n    \"\"\"\n    return EnvVars(self.env_vars, self.env_include, self.env_exclude)\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.apply_features","title":"apply_features(requirement: str)","text":"

A convenience method that applies any user defined features to the given requirement.

Source code in src/hatch/env/plugin/interface.py 
def apply_features(self, requirement: str):\n    \"\"\"\n    A convenience method that applies any user defined [features](../../config/environment/overview.md#features)\n    to the given requirement.\n    \"\"\"\n    if self.features:\n        features = ','.join(self.features)\n        return f'{requirement}[{features}]'\n\n    return requirement\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.construct_pip_install_command","title":"construct_pip_install_command(args: list[str])","text":"

A convenience method for constructing a pip install command with the given verbosity. The default verbosity is set to one less than Hatch's verbosity.

Source code in src/hatch/env/plugin/interface.py 
def construct_pip_install_command(self, args: list[str]):\n    \"\"\"\n    A convenience method for constructing a [`pip install`](https://pip.pypa.io/en/stable/cli/pip_install/)\n    command with the given verbosity. The default verbosity is set to one less than Hatch's verbosity.\n    \"\"\"\n    command = ['python', '-u', '-m', 'pip', 'install', '--disable-pip-version-check', '--no-python-version-warning']\n\n    # Default to -1 verbosity\n    add_verbosity_flag(command, self.verbosity, adjustment=-1)\n\n    command.extend(args)\n    return command\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.join_command_args","title":"join_command_args(args: list[str])","text":"

This is used by the run command to construct the root command string from the received arguments.

Source code in src/hatch/env/plugin/interface.py 
def join_command_args(self, args: list[str]):\n    \"\"\"\n    This is used by the [`run`](../../cli/reference.md#hatch-run) command to construct the root command string\n    from the received arguments.\n    \"\"\"\n    return self.platform.join_command_args(args)\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.check_compatibility","title":"check_compatibility()","text":"

This raises an exception if the environment is not compatible with the user's setup. The default behavior checks for platform compatibility and any method override should keep this check.

This check is never performed if the environment has been created.

Source code in src/hatch/env/plugin/interface.py 
def check_compatibility(self):\n    \"\"\"\n    This raises an exception if the environment is not compatible with the user's setup. The default behavior\n    checks for [platform compatibility](../../config/environment/overview.md#supported-platforms)\n    and any method override should keep this check.\n\n    This check is never performed if the environment has been\n    [created](reference.md#hatch.env.plugin.interface.EnvironmentInterface.create).\n    \"\"\"\n    if self.platforms and self.platform.name not in self.platforms:\n        message = 'unsupported platform'\n        raise OSError(message)\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.get_option_types","title":"get_option_types() -> dict staticmethod","text":"

Returns a mapping of supported options to their respective types so that they can be used by overrides.

Source code in src/hatch/env/plugin/interface.py 
@staticmethod\ndef get_option_types() -> dict:\n    \"\"\"\n    Returns a mapping of supported options to their respective types so that they can be used by\n    [overrides](../../config/environment/advanced.md#option-overrides).\n    \"\"\"\n    return {}\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.get_env_var_option","title":"get_env_var_option(option: str) -> str","text":"

Returns the value of the upper-cased environment variable HATCH_ENV_TYPE_<PLUGIN_NAME>_<option>.

Source code in src/hatch/env/plugin/interface.py 
def get_env_var_option(self, option: str) -> str:\n    \"\"\"\n    Returns the value of the upper-cased environment variable `HATCH_ENV_TYPE_<PLUGIN_NAME>_<option>`.\n    \"\"\"\n    return os.environ.get(f'{AppEnvVars.ENV_OPTION_PREFIX}{self.PLUGIN_NAME}_{option}'.upper(), '')\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.get_context","title":"get_context()","text":"

Returns a subclass of EnvironmentContextFormatter.

Source code in src/hatch/env/plugin/interface.py 
def get_context(self):\n    \"\"\"\n    Returns a subclass of\n    [EnvironmentContextFormatter](../utilities.md#hatch.env.context.EnvironmentContextFormatter).\n    \"\"\"\n    from hatch.env.context import EnvironmentContextFormatter\n\n    return EnvironmentContextFormatter(self)\n
"},{"location":"plugins/environment/virtual/","title":"Virtual environment","text":"

This uses virtual environments backed by the standard virtualenv tool.

"},{"location":"plugins/environment/virtual/#configuration","title":"Configuration","text":"

The environment plugin name is virtual.

pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\ntype = \"virtual\"\n
[envs.<ENV_NAME>]\ntype = \"virtual\"\n
"},{"location":"plugins/environment/virtual/#options","title":"Options","text":"Option Default Description python The version of Python to find on your system and subsequently use to create the environment, defaulting to the HATCH_PYTHON environment variable, followed by the normal resolution logic. Setting the HATCH_PYTHON environment variable to self will force the use of the Python executable Hatch is running on. For more information, see the documentation. python-sources ['external', 'internal'] This may be set to an array of strings that are either the literal internal or external. External considers only Python executables that are already on PATH. Internal considers only internally managed Python distributions. path An explicit path to the virtual environment. The path may be absolute or relative to the project root. Any environments that inherit this option will also use this path. The environment variable HATCH_ENV_TYPE_VIRTUAL_PATH may be used, which will take precedence. system-packages false Whether or not to give the virtual environment access to the system site-packages directory"},{"location":"plugins/environment/virtual/#location","title":"Location","text":"

The location of environments is determined in the following heuristic order:

  1. The path option
  2. A directory named after the environment within the configured virtual environment directory if the directory resides somewhere within the project root or if it is set to a .virtualenvs directory within the user's home directory
  3. Otherwise, environments are stored within the configured virtual environment directory in a deeply nested structure in order to support multiple projects

Additionally, when the path option is not used, the name of the directory for the default environment will be the normalized project name to provide a more meaningful default shell prompt.

"},{"location":"plugins/environment/virtual/#python-resolution","title":"Python resolution","text":"

Virtual environments necessarily require a parent installation of Python. The following rules determine how the parent is resolved.

The Python choice is determined by the python option followed by the HATCH_PYTHON environment variable. If the choice is via the environment variable, then resolution stops and that path is used unconditionally.

The resolvers will be based on the python-sources option and all resolved interpreters will ensure compatibility with the project's defined Python support.

If a Python version has been chosen then each resolver will try to find an interpreter that satisfies that version.

If no version has been chosen, then each resolver will try to find a version that matches the version of Python that Hatch is currently running on. If not found then each resolver will try to find the highest compatible version.

Note

Some external Python paths are considered unstable and are ignored during resolution. For example, if Hatch is installed via Homebrew then sys.executable will be ignored because the interpreter could change or be removed at any time.

Note

When resolution finds a match using an internally managed distribution and an update is available, the latest distribution will automatically be downloaded before environment creation.

"},{"location":"plugins/environment/virtual/#internal-distributions","title":"Internal distributions","text":"

The following options are recognized for internal Python resolution.

"},{"location":"plugins/environment/virtual/#cpython","title":"CPython","text":"ID 3.7 3.8 3.9 3.10 3.11 3.12

The source of distributions is the python-build-standalone project.

Some distributions have variants that may be configured with the HATCH_PYTHON_VARIANT_<PLATFORM> environment variable where <PLATFORM> is the uppercase version of one of the following:

Platform Options Linux Windows "},{"location":"plugins/environment/virtual/#pypy","title":"PyPy","text":"ID pypy2.7 pypy3.9 pypy3.10

The source of distributions is the PyPy project.

"},{"location":"plugins/environment/virtual/#troubleshooting","title":"Troubleshooting","text":""},{"location":"plugins/environment/virtual/#macos-sip","title":"macOS SIP","text":"

If you need to set linker environment variables like those starting with DYLD_ or LD_, any executable secured by System Integrity Protection that is invoked when running commands will not see those environment variable modifications as macOS strips those.

Hatch interprets such commands as shell commands but deliberately ignores such paths to protected shells. This workaround suffices for the majority of use cases but there are 2 situations in which it may not:

  1. There are no unprotected sh, bash, zsh, nor fish executables found along PATH.
  2. The desired executable is a project's script, and the location of environments contains spaces or is longer than 1241 characters. In this case pip and other installers will create such an entry point with a shebang pointing to /bin/sh (which is protected) to avoid shebang limitations. Rather than changing the location, you could invoke the script as e.g. python -m pytest (if the project supports that method of invocation by shipping a __main__.py).

  1. The shebang length limit is usually 127 but 3 characters surround the executable path: #!<EXE_PATH>\\n \u21a9

"},{"location":"plugins/environment-collector/custom/","title":"Custom environment collector","text":"

This is a custom class in a given Python file that inherits from the EnvironmentCollectorInterface.

"},{"location":"plugins/environment-collector/custom/#configuration","title":"Configuration","text":"

The environment collector plugin name is custom.

pyproject.toml hatch.toml 
[tool.hatch.env.collectors.custom]\n
[env.collectors.custom]\n
"},{"location":"plugins/environment-collector/custom/#options","title":"Options","text":"Option Default Description path hatch_plugins.py The path of the Python file"},{"location":"plugins/environment-collector/custom/#example","title":"Example","text":"hatch_plugins.py 
    from hatch.env.collectors.plugin.interface import EnvironmentCollectorInterface\n\n\n    class CustomEnvironmentCollector(EnvironmentCollectorInterface):\n        ...\n

If multiple subclasses are found, you must define a function named get_environment_collector that returns the desired environment collector.

Note

Any defined PLUGIN_NAME is ignored and will always be custom.

"},{"location":"plugins/environment-collector/default/","title":"Default environment collector","text":"

This adds the default environment with type set to virtual and will always be applied.

"},{"location":"plugins/environment-collector/default/#configuration","title":"Configuration","text":"

The environment collector plugin name is default.

pyproject.toml hatch.toml 
[tool.hatch.env.collectors.default]\n
[env.collectors.default]\n
"},{"location":"plugins/environment-collector/default/#options","title":"Options","text":"

There are no options available currently.

"},{"location":"plugins/environment-collector/reference/","title":"Environment collector plugins","text":"

Environment collectors allow for dynamically modifying environments or adding environments beyond those defined in config. Users can override default values provided by each environment.

"},{"location":"plugins/environment-collector/reference/#known-third-party","title":"Known third-party","text":""},{"location":"plugins/environment-collector/reference/#installation","title":"Installation","text":"

Any required environment collectors that are not built-in must be manually installed alongside Hatch or listed in the tool.hatch.env.requires array for automatic management:

pyproject.toml hatch.toml 
[tool.hatch.env]\nrequires = [\n  \"...\",\n]\n
[env]\nrequires = [\n  \"...\",\n]\n
"},{"location":"plugins/environment-collector/reference/#hatch.env.collectors.plugin.interface.EnvironmentCollectorInterface","title":"EnvironmentCollectorInterface","text":"

Example usage:

plugin.py hooks.py 
    from hatch.env.collectors.plugin.interface import EnvironmentCollectorInterface\n\n\n    class SpecialEnvironmentCollector(EnvironmentCollectorInterface):\n        PLUGIN_NAME = 'special'\n        ...\n
    from hatchling.plugin import hookimpl\n\n    from .plugin import SpecialEnvironmentCollector\n\n\n    @hookimpl\n    def hatch_register_environment_collector():\n        return SpecialEnvironmentCollector\n
Source code in src/hatch/env/collectors/plugin/interface.py 
class EnvironmentCollectorInterface:\n    \"\"\"\n    Example usage:\n\n    ```python tab=\"plugin.py\"\n        from hatch.env.collectors.plugin.interface import EnvironmentCollectorInterface\n\n\n        class SpecialEnvironmentCollector(EnvironmentCollectorInterface):\n            PLUGIN_NAME = 'special'\n            ...\n    ```\n\n    ```python tab=\"hooks.py\"\n        from hatchling.plugin import hookimpl\n\n        from .plugin import SpecialEnvironmentCollector\n\n\n        @hookimpl\n        def hatch_register_environment_collector():\n            return SpecialEnvironmentCollector\n    ```\n    \"\"\"\n\n    PLUGIN_NAME = ''\n    \"\"\"The name used for selection.\"\"\"\n\n    def __init__(self, root, config):\n        self.__root = root\n        self.__config = config\n\n    @property\n    def root(self):\n        \"\"\"\n        The root of the project tree as a path-like object.\n        \"\"\"\n        return self.__root\n\n    @property\n    def config(self) -> dict:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.env.collectors.<PLUGIN_NAME>]\n        ```\n        \"\"\"\n        return self.__config\n\n    def get_initial_config(self) -> dict[str, dict]:  # noqa: PLR6301\n        \"\"\"\n        Returns configuration for environments keyed by the environment or matrix name.\n        \"\"\"\n        return {}\n\n    def finalize_config(self, config: dict[str, dict]):\n        \"\"\"\n        Finalizes configuration for environments keyed by the environment or matrix name. This will override\n        any user-defined settings and any collectors that ran before this call.\n\n        This is called before matrices are turned into concrete environments.\n        \"\"\"\n\n    def finalize_environments(self, config: dict[str, dict]):\n        \"\"\"\n        Finalizes configuration for environments keyed by the environment name. This will override\n        any user-defined settings and any collectors that ran before this call.\n\n        This is called after matrices are turned into concrete environments.\n        \"\"\"\n
"},{"location":"plugins/environment-collector/reference/#hatch.env.collectors.plugin.interface.EnvironmentCollectorInterface.PLUGIN_NAME","title":"PLUGIN_NAME = '' class-attribute instance-attribute","text":"

The name used for selection.

"},{"location":"plugins/environment-collector/reference/#hatch.env.collectors.plugin.interface.EnvironmentCollectorInterface.root","title":"root property","text":"

The root of the project tree as a path-like object.

"},{"location":"plugins/environment-collector/reference/#hatch.env.collectors.plugin.interface.EnvironmentCollectorInterface.config","title":"config: dict property","text":"pyproject.toml hatch.toml 
[tool.hatch.env.collectors.<PLUGIN_NAME>]\n
[env.collectors.<PLUGIN_NAME>]\n
"},{"location":"plugins/environment-collector/reference/#hatch.env.collectors.plugin.interface.EnvironmentCollectorInterface.get_initial_config","title":"get_initial_config() -> dict[str, dict]","text":"

Returns configuration for environments keyed by the environment or matrix name.

Source code in src/hatch/env/collectors/plugin/interface.py 
def get_initial_config(self) -> dict[str, dict]:  # noqa: PLR6301\n    \"\"\"\n    Returns configuration for environments keyed by the environment or matrix name.\n    \"\"\"\n    return {}\n
"},{"location":"plugins/environment-collector/reference/#hatch.env.collectors.plugin.interface.EnvironmentCollectorInterface.finalize_config","title":"finalize_config(config: dict[str, dict])","text":"

Finalizes configuration for environments keyed by the environment or matrix name. This will override any user-defined settings and any collectors that ran before this call.

This is called before matrices are turned into concrete environments.

Source code in src/hatch/env/collectors/plugin/interface.py 
def finalize_config(self, config: dict[str, dict]):\n    \"\"\"\n    Finalizes configuration for environments keyed by the environment or matrix name. This will override\n    any user-defined settings and any collectors that ran before this call.\n\n    This is called before matrices are turned into concrete environments.\n    \"\"\"\n
"},{"location":"plugins/environment-collector/reference/#hatch.env.collectors.plugin.interface.EnvironmentCollectorInterface.finalize_environments","title":"finalize_environments(config: dict[str, dict])","text":"

Finalizes configuration for environments keyed by the environment name. This will override any user-defined settings and any collectors that ran before this call.

This is called after matrices are turned into concrete environments.

Source code in src/hatch/env/collectors/plugin/interface.py 
def finalize_environments(self, config: dict[str, dict]):\n    \"\"\"\n    Finalizes configuration for environments keyed by the environment name. This will override\n    any user-defined settings and any collectors that ran before this call.\n\n    This is called after matrices are turned into concrete environments.\n    \"\"\"\n
"},{"location":"plugins/metadata-hook/custom/","title":"Custom metadata hook","text":"

This is a custom class in a given Python file that inherits from the MetadataHookInterface.

"},{"location":"plugins/metadata-hook/custom/#configuration","title":"Configuration","text":"

The metadata hook plugin name is custom.

pyproject.toml hatch.toml 
[tool.hatch.metadata.hooks.custom]\n
[metadata.hooks.custom]\n
"},{"location":"plugins/metadata-hook/custom/#options","title":"Options","text":"Option Default Description path hatch_build.py The path of the Python file"},{"location":"plugins/metadata-hook/custom/#example","title":"Example","text":"hatch_build.py 
    from hatchling.metadata.plugin.interface import MetadataHookInterface\n\n\n    class CustomMetadataHook(MetadataHookInterface):\n        ...\n

If multiple subclasses are found, you must define a function named get_metadata_hook that returns the desired build hook.

Note

Any defined PLUGIN_NAME is ignored and will always be custom.

"},{"location":"plugins/metadata-hook/reference/","title":"Metadata hook plugins","text":"

Metadata hooks allow for the modification of project metadata after it has been loaded.

"},{"location":"plugins/metadata-hook/reference/#known-third-party","title":"Known third-party","text":""},{"location":"plugins/metadata-hook/reference/#hatchling.metadata.plugin.interface.MetadataHookInterface","title":"MetadataHookInterface","text":"

Example usage:

plugin.py hooks.py 
from hatchling.metadata.plugin.interface import MetadataHookInterface\n\n\nclass SpecialMetadataHook(MetadataHookInterface):\n    PLUGIN_NAME = 'special'\n    ...\n
from hatchling.plugin import hookimpl\n\nfrom .plugin import SpecialMetadataHook\n\n\n@hookimpl\ndef hatch_register_metadata_hook():\n    return SpecialMetadataHook\n
Source code in backend/src/hatchling/metadata/plugin/interface.py 
class MetadataHookInterface(ABC):  # no cov\n    \"\"\"\n    Example usage:\n\n    ```python tab=\"plugin.py\"\n    from hatchling.metadata.plugin.interface import MetadataHookInterface\n\n\n    class SpecialMetadataHook(MetadataHookInterface):\n        PLUGIN_NAME = 'special'\n        ...\n    ```\n\n    ```python tab=\"hooks.py\"\n    from hatchling.plugin import hookimpl\n\n    from .plugin import SpecialMetadataHook\n\n\n    @hookimpl\n    def hatch_register_metadata_hook():\n        return SpecialMetadataHook\n    ```\n    \"\"\"\n\n    PLUGIN_NAME = ''\n    \"\"\"The name used for selection.\"\"\"\n\n    def __init__(self, root: str, config: dict) -> None:\n        self.__root = root\n        self.__config = config\n\n    @property\n    def root(self) -> str:\n        \"\"\"\n        The root of the project tree.\n        \"\"\"\n        return self.__root\n\n    @property\n    def config(self) -> dict:\n        \"\"\"\n        The hook configuration.\n\n        ```toml config-example\n        [tool.hatch.metadata.hooks.<PLUGIN_NAME>]\n        ```\n        \"\"\"\n        return self.__config\n\n    @abstractmethod\n    def update(self, metadata: dict) -> None:\n        \"\"\"\n        This updates the metadata mapping of the `project` table in-place.\n        \"\"\"\n\n    def get_known_classifiers(self) -> list[str]:  # noqa: PLR6301\n        \"\"\"\n        This returns extra classifiers that should be considered valid in addition to the ones known to PyPI.\n        \"\"\"\n        return []\n
"},{"location":"plugins/metadata-hook/reference/#hatchling.metadata.plugin.interface.MetadataHookInterface.PLUGIN_NAME","title":"PLUGIN_NAME = '' class-attribute instance-attribute","text":"

The name used for selection.

"},{"location":"plugins/metadata-hook/reference/#hatchling.metadata.plugin.interface.MetadataHookInterface.root","title":"root: str property","text":"

The root of the project tree.

"},{"location":"plugins/metadata-hook/reference/#hatchling.metadata.plugin.interface.MetadataHookInterface.config","title":"config: dict property","text":"

The hook configuration.

pyproject.toml hatch.toml 
[tool.hatch.metadata.hooks.<PLUGIN_NAME>]\n
[metadata.hooks.<PLUGIN_NAME>]\n
"},{"location":"plugins/metadata-hook/reference/#hatchling.metadata.plugin.interface.MetadataHookInterface.update","title":"update(metadata: dict) -> None abstractmethod","text":"

This updates the metadata mapping of the project table in-place.

Source code in backend/src/hatchling/metadata/plugin/interface.py 
@abstractmethod\ndef update(self, metadata: dict) -> None:\n    \"\"\"\n    This updates the metadata mapping of the `project` table in-place.\n    \"\"\"\n
"},{"location":"plugins/metadata-hook/reference/#hatchling.metadata.plugin.interface.MetadataHookInterface.get_known_classifiers","title":"get_known_classifiers() -> list[str]","text":"

This returns extra classifiers that should be considered valid in addition to the ones known to PyPI.

Source code in backend/src/hatchling/metadata/plugin/interface.py 
def get_known_classifiers(self) -> list[str]:  # noqa: PLR6301\n    \"\"\"\n    This returns extra classifiers that should be considered valid in addition to the ones known to PyPI.\n    \"\"\"\n    return []\n
"},{"location":"plugins/publisher/package-index/","title":"Index publisher","text":"

See the documentation for publishing.

"},{"location":"plugins/publisher/package-index/#configuration","title":"Configuration","text":"

The publisher plugin name is index.

config.toml 
[publish.index]\n
"},{"location":"plugins/publisher/package-index/#options","title":"Options","text":"Flag Config name Description -r/--repo repo The repository with which to publish artifacts -u/--user user The user with which to authenticate -a/--auth auth The credentials to use for authentication --ca-cert ca-cert The path to a CA bundle --client-cert client-cert The path to a client certificate, optionally containing the private key --client-key client-key The path to the client certificate's private key repos A table of named repositories to their respective options"},{"location":"plugins/publisher/package-index/#repositories","title":"Repositories","text":"

All top-level options can be overridden per repository using the repos table with a required url attribute for each repository. The following shows the default configuration:

config.toml 
[publish.index.repos.main]\nurl = \"https://upload.pypi.org/legacy/\"\n\n[publish.index.repos.test]\nurl = \"https://test.pypi.org/legacy/\"\n

The repo and repos options have no effect.

"},{"location":"plugins/publisher/reference/","title":"Publisher plugins","text":""},{"location":"plugins/publisher/reference/#hatch.publish.plugin.interface.PublisherInterface","title":"PublisherInterface","text":"

Example usage:

plugin.py hooks.py 
    from hatch.publish.plugin.interface import PublisherInterface\n\n\n    class SpecialPublisher(PublisherInterface):\n        PLUGIN_NAME = 'special'\n        ...\n
    from hatchling.plugin import hookimpl\n\n    from .plugin import SpecialPublisher\n\n\n    @hookimpl\n    def hatch_register_publisher():\n        return SpecialPublisher\n
Source code in src/hatch/publish/plugin/interface.py 
class PublisherInterface(ABC):\n    \"\"\"\n    Example usage:\n\n    ```python tab=\"plugin.py\"\n        from hatch.publish.plugin.interface import PublisherInterface\n\n\n        class SpecialPublisher(PublisherInterface):\n            PLUGIN_NAME = 'special'\n            ...\n    ```\n\n    ```python tab=\"hooks.py\"\n        from hatchling.plugin import hookimpl\n\n        from .plugin import SpecialPublisher\n\n\n        @hookimpl\n        def hatch_register_publisher():\n            return SpecialPublisher\n    ```\n    \"\"\"\n\n    PLUGIN_NAME = ''\n    \"\"\"The name used for selection.\"\"\"\n\n    def __init__(self, app, root, cache_dir, project_config, plugin_config):\n        self.__app = app\n        self.__root = root\n        self.__cache_dir = cache_dir\n        self.__project_config = project_config\n        self.__plugin_config = plugin_config\n\n        self.__disable = None\n\n    @property\n    def app(self):\n        \"\"\"\n        An instance of [Application](../utilities.md#hatchling.bridge.app.Application).\n        \"\"\"\n        return self.__app\n\n    @property\n    def root(self):\n        \"\"\"\n        The root of the project tree as a path-like object.\n        \"\"\"\n        return self.__root\n\n    @property\n    def cache_dir(self):\n        \"\"\"\n        The directory reserved exclusively for this plugin as a path-like object.\n        \"\"\"\n        return self.__cache_dir\n\n    @property\n    def project_config(self) -> dict:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.publish.<PLUGIN_NAME>]\n        ```\n        \"\"\"\n        return self.__project_config\n\n    @property\n    def plugin_config(self) -> dict:\n        \"\"\"\n        This is defined in Hatch's [config file](../../config/hatch.md).\n\n        ```toml tab=\"config.toml\"\n        [publish.<PLUGIN_NAME>]\n        ```\n        \"\"\"\n        return self.__plugin_config\n\n    @property\n    def disable(self):\n        \"\"\"\n        Whether this plugin is disabled, thus requiring confirmation when publishing. Local\n        [project configuration](reference.md#hatch.publish.plugin.interface.PublisherInterface.project_config)\n        takes precedence over global\n        [plugin configuration](reference.md#hatch.publish.plugin.interface.PublisherInterface.plugin_config).\n        \"\"\"\n        if self.__disable is None:\n            if 'disable' in self.project_config:\n                disable = self.project_config['disable']\n                if not isinstance(disable, bool):\n                    message = f'Field `tool.hatch.publish.{self.PLUGIN_NAME}.disable` must be a boolean'\n                    raise TypeError(message)\n            else:\n                disable = self.plugin_config.get('disable', False)\n                if not isinstance(disable, bool):\n                    message = f'Global plugin configuration `publish.{self.PLUGIN_NAME}.disable` must be a boolean'\n                    raise TypeError(message)\n\n            self.__disable = disable\n\n        return self.__disable\n\n    @abstractmethod\n    def publish(self, artifacts: list[str], options: dict):\n        \"\"\"\n        :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n        This is called directly by the [`publish`](../../cli/reference.md#hatch-publish) command\n        with the arguments and options it receives.\n        \"\"\"\n
"},{"location":"plugins/publisher/reference/#hatch.publish.plugin.interface.PublisherInterface.PLUGIN_NAME","title":"PLUGIN_NAME = '' class-attribute instance-attribute","text":"

The name used for selection.

"},{"location":"plugins/publisher/reference/#hatch.publish.plugin.interface.PublisherInterface.app","title":"app property","text":"

An instance of Application.

"},{"location":"plugins/publisher/reference/#hatch.publish.plugin.interface.PublisherInterface.root","title":"root property","text":"

The root of the project tree as a path-like object.

"},{"location":"plugins/publisher/reference/#hatch.publish.plugin.interface.PublisherInterface.cache_dir","title":"cache_dir property","text":"

The directory reserved exclusively for this plugin as a path-like object.

"},{"location":"plugins/publisher/reference/#hatch.publish.plugin.interface.PublisherInterface.project_config","title":"project_config: dict property","text":"pyproject.toml hatch.toml 
[tool.hatch.publish.<PLUGIN_NAME>]\n
[publish.<PLUGIN_NAME>]\n
"},{"location":"plugins/publisher/reference/#hatch.publish.plugin.interface.PublisherInterface.plugin_config","title":"plugin_config: dict property","text":"

This is defined in Hatch's config file.

config.toml 
[publish.<PLUGIN_NAME>]\n
"},{"location":"plugins/publisher/reference/#hatch.publish.plugin.interface.PublisherInterface.disable","title":"disable property","text":"

Whether this plugin is disabled, thus requiring confirmation when publishing. Local project configuration takes precedence over global plugin configuration.

"},{"location":"plugins/publisher/reference/#hatch.publish.plugin.interface.PublisherInterface.publish","title":"publish(artifacts: list[str], options: dict) abstractmethod","text":"

REQUIRED

This is called directly by the publish command with the arguments and options it receives.

Source code in src/hatch/publish/plugin/interface.py 
@abstractmethod\ndef publish(self, artifacts: list[str], options: dict):\n    \"\"\"\n    :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n    This is called directly by the [`publish`](../../cli/reference.md#hatch-publish) command\n    with the arguments and options it receives.\n    \"\"\"\n
"},{"location":"plugins/version-scheme/reference/","title":"Version scheme plugins","text":""},{"location":"plugins/version-scheme/reference/#known-third-party","title":"Known third-party","text":""},{"location":"plugins/version-scheme/reference/#hatchling.version.scheme.plugin.interface.VersionSchemeInterface","title":"VersionSchemeInterface","text":"

Example usage:

plugin.py hooks.py 
from hatchling.version.scheme.plugin.interface import VersionSchemeInterface\n\n\nclass SpecialVersionScheme(VersionSchemeInterface):\n    PLUGIN_NAME = 'special'\n    ...\n
from hatchling.plugin import hookimpl\n\nfrom .plugin import SpecialVersionScheme\n\n\n@hookimpl\ndef hatch_register_version_scheme():\n    return SpecialVersionScheme\n
Source code in backend/src/hatchling/version/scheme/plugin/interface.py 
class VersionSchemeInterface(ABC):  # no cov\n    \"\"\"\n    Example usage:\n\n    ```python tab=\"plugin.py\"\n    from hatchling.version.scheme.plugin.interface import VersionSchemeInterface\n\n\n    class SpecialVersionScheme(VersionSchemeInterface):\n        PLUGIN_NAME = 'special'\n        ...\n    ```\n\n    ```python tab=\"hooks.py\"\n    from hatchling.plugin import hookimpl\n\n    from .plugin import SpecialVersionScheme\n\n\n    @hookimpl\n    def hatch_register_version_scheme():\n        return SpecialVersionScheme\n    ```\n    \"\"\"\n\n    PLUGIN_NAME = ''\n    \"\"\"The name used for selection.\"\"\"\n\n    def __init__(self, root: str, config: dict) -> None:\n        self.__root = root\n        self.__config = config\n\n    @property\n    def root(self) -> str:\n        \"\"\"\n        The root of the project tree as a string.\n        \"\"\"\n        return self.__root\n\n    @property\n    def config(self) -> dict:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.version]\n        ```\n        \"\"\"\n        return self.__config\n\n    @abstractmethod\n    def update(self, desired_version: str, original_version: str, version_data: dict) -> str:\n        \"\"\"\n        This should return a normalized form of the desired version and verify that it\n        is higher than the original version.\n        \"\"\"\n
"},{"location":"plugins/version-scheme/reference/#hatchling.version.scheme.plugin.interface.VersionSchemeInterface.PLUGIN_NAME","title":"PLUGIN_NAME = '' class-attribute instance-attribute","text":"

The name used for selection.

"},{"location":"plugins/version-scheme/reference/#hatchling.version.scheme.plugin.interface.VersionSchemeInterface.root","title":"root: str property","text":"

The root of the project tree as a string.

"},{"location":"plugins/version-scheme/reference/#hatchling.version.scheme.plugin.interface.VersionSchemeInterface.config","title":"config: dict property","text":"pyproject.toml hatch.toml 
[tool.hatch.version]\n
[version]\n
"},{"location":"plugins/version-scheme/reference/#hatchling.version.scheme.plugin.interface.VersionSchemeInterface.update","title":"update(desired_version: str, original_version: str, version_data: dict) -> str abstractmethod","text":"

This should return a normalized form of the desired version and verify that it is higher than the original version.

Source code in backend/src/hatchling/version/scheme/plugin/interface.py 
@abstractmethod\ndef update(self, desired_version: str, original_version: str, version_data: dict) -> str:\n    \"\"\"\n    This should return a normalized form of the desired version and verify that it\n    is higher than the original version.\n    \"\"\"\n
"},{"location":"plugins/version-scheme/standard/","title":"Standard version scheme","text":"

See the documentation for versioning.

"},{"location":"plugins/version-scheme/standard/#configuration","title":"Configuration","text":"

The version scheme plugin name is standard.

pyproject.toml hatch.toml 
[tool.hatch.version]\nscheme = \"standard\"\n
[version]\nscheme = \"standard\"\n
"},{"location":"plugins/version-scheme/standard/#options","title":"Options","text":"Option Description validate-bump When setting a specific version, this determines whether to check that the new version is higher than the original. The default is true."},{"location":"plugins/version-source/code/","title":"Code version source","text":""},{"location":"plugins/version-source/code/#updates","title":"Updates","text":"

Setting the version is not supported.

"},{"location":"plugins/version-source/code/#configuration","title":"Configuration","text":"

The version source plugin name is code.

pyproject.toml hatch.toml 
[tool.hatch.version]\nsource = \"code\"\n
[version]\nsource = \"code\"\n
"},{"location":"plugins/version-source/code/#options","title":"Options","text":"Option Description path (required) A relative path to a Python file or extension module that will be loaded expression A Python expression that when evaluated in the context of the loaded file returns the version. The default expression is simply __version__. search-paths A list of relative paths to directories that will be prepended to Python's search path"},{"location":"plugins/version-source/code/#missing-imports","title":"Missing imports","text":"

If the chosen path imports another module in your project, then you'll need to use absolute imports coupled with the search-paths option. For example, say you need to load the following file:

src/pkg/__init__.py 
    from ._version import get_version\n\n    __version__ = get_version()\n

You should change it to:

src/pkg/__init__.py 
    from pkg._version import get_version\n\n    __version__ = get_version()\n

and the configuration would become:

pyproject.toml hatch.toml 
[tool.hatch.version]\nsource = \"code\"\npath = \"src/pkg/__init__.py\"\nsearch-paths = [\"src\"]\n
[version]\nsource = \"code\"\npath = \"src/pkg/__init__.py\"\nsearch-paths = [\"src\"]\n
"},{"location":"plugins/version-source/env/","title":"Environment version source","text":"

Retrieves the version from an environment variable. This can be useful in build pipelines where the version is set by an external trigger.

"},{"location":"plugins/version-source/env/#updates","title":"Updates","text":"

Setting the version is not supported.

"},{"location":"plugins/version-source/env/#configuration","title":"Configuration","text":"

The version source plugin name is env.

pyproject.toml hatch.toml 
[tool.hatch.version]\nsource = \"env\"\n
[version]\nsource = \"env\"\n
"},{"location":"plugins/version-source/env/#options","title":"Options","text":"Option Description variable (required) The name of the environment variable"},{"location":"plugins/version-source/reference/","title":"Version source plugins","text":""},{"location":"plugins/version-source/reference/#known-third-party","title":"Known third-party","text":""},{"location":"plugins/version-source/reference/#hatchling.version.source.plugin.interface.VersionSourceInterface","title":"VersionSourceInterface","text":"

Example usage:

plugin.py hooks.py 
from hatchling.version.source.plugin.interface import VersionSourceInterface\n\n\nclass SpecialVersionSource(VersionSourceInterface):\n    PLUGIN_NAME = 'special'\n    ...\n
from hatchling.plugin import hookimpl\n\nfrom .plugin import SpecialVersionSource\n\n\n@hookimpl\ndef hatch_register_version_source():\n    return SpecialVersionSource\n
Source code in backend/src/hatchling/version/source/plugin/interface.py 
class VersionSourceInterface(ABC):  # no cov\n    \"\"\"\n    Example usage:\n\n    ```python tab=\"plugin.py\"\n    from hatchling.version.source.plugin.interface import VersionSourceInterface\n\n\n    class SpecialVersionSource(VersionSourceInterface):\n        PLUGIN_NAME = 'special'\n        ...\n    ```\n\n    ```python tab=\"hooks.py\"\n    from hatchling.plugin import hookimpl\n\n    from .plugin import SpecialVersionSource\n\n\n    @hookimpl\n    def hatch_register_version_source():\n        return SpecialVersionSource\n    ```\n    \"\"\"\n\n    PLUGIN_NAME = ''\n    \"\"\"The name used for selection.\"\"\"\n\n    def __init__(self, root: str, config: dict) -> None:\n        self.__root = root\n        self.__config = config\n\n    @property\n    def root(self) -> str:\n        \"\"\"\n        The root of the project tree as a string.\n        \"\"\"\n        return self.__root\n\n    @property\n    def config(self) -> dict:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.version]\n        ```\n        \"\"\"\n        return self.__config\n\n    @abstractmethod\n    def get_version_data(self) -> dict:\n        \"\"\"\n        This should return a mapping with a `version` key representing the current version of the project and will be\n        displayed when invoking the [`version`](../../cli/reference.md#hatch-version) command without any arguments.\n\n        The mapping can contain anything else and will be passed to\n        [set_version](reference.md#hatchling.version.source.plugin.interface.VersionSourceInterface.set_version)\n        when updating the version.\n        \"\"\"\n\n    def set_version(self, version: str, version_data: dict) -> None:\n        \"\"\"\n        This should update the version to the first argument with the data provided during retrieval.\n        \"\"\"\n        raise NotImplementedError\n
"},{"location":"plugins/version-source/reference/#hatchling.version.source.plugin.interface.VersionSourceInterface.PLUGIN_NAME","title":"PLUGIN_NAME = '' class-attribute instance-attribute","text":"

The name used for selection.

"},{"location":"plugins/version-source/reference/#hatchling.version.source.plugin.interface.VersionSourceInterface.root","title":"root: str property","text":"

The root of the project tree as a string.

"},{"location":"plugins/version-source/reference/#hatchling.version.source.plugin.interface.VersionSourceInterface.config","title":"config: dict property","text":"pyproject.toml hatch.toml 
[tool.hatch.version]\n
[version]\n
"},{"location":"plugins/version-source/reference/#hatchling.version.source.plugin.interface.VersionSourceInterface.get_version_data","title":"get_version_data() -> dict abstractmethod","text":"

This should return a mapping with a version key representing the current version of the project and will be displayed when invoking the version command without any arguments.

The mapping can contain anything else and will be passed to set_version when updating the version.

Source code in backend/src/hatchling/version/source/plugin/interface.py 
@abstractmethod\ndef get_version_data(self) -> dict:\n    \"\"\"\n    This should return a mapping with a `version` key representing the current version of the project and will be\n    displayed when invoking the [`version`](../../cli/reference.md#hatch-version) command without any arguments.\n\n    The mapping can contain anything else and will be passed to\n    [set_version](reference.md#hatchling.version.source.plugin.interface.VersionSourceInterface.set_version)\n    when updating the version.\n    \"\"\"\n
"},{"location":"plugins/version-source/reference/#hatchling.version.source.plugin.interface.VersionSourceInterface.set_version","title":"set_version(version: str, version_data: dict) -> None","text":"

This should update the version to the first argument with the data provided during retrieval.

Source code in backend/src/hatchling/version/source/plugin/interface.py 
def set_version(self, version: str, version_data: dict) -> None:\n    \"\"\"\n    This should update the version to the first argument with the data provided during retrieval.\n    \"\"\"\n    raise NotImplementedError\n
"},{"location":"plugins/version-source/regex/","title":"Regex version source","text":"

See the documentation for versioning.

"},{"location":"plugins/version-source/regex/#updates","title":"Updates","text":"

Setting the version is supported.

"},{"location":"plugins/version-source/regex/#configuration","title":"Configuration","text":"

The version source plugin name is regex.

pyproject.toml hatch.toml 
[tool.hatch.version]\nsource = \"regex\"\n
[version]\nsource = \"regex\"\n
"},{"location":"plugins/version-source/regex/#options","title":"Options","text":"Option Description path (required) A relative path to a file containing the project's version pattern A regular expression that has a named group called version that represents the version. The default pattern looks for a variable named __version__ or VERSION that is set to a string containing the version, optionally prefixed with the lowercase letter v."},{"location":"blog/archive/2023/","title":"2023","text":""},{"location":"blog/archive/2022/","title":"2022","text":""},{"location":"blog/category/release/","title":"Release","text":""}]} \ No newline at end of file +{"config":{"lang":["en"],"separator":"[\\s\\-]+","pipeline":["stopWordFilter"],"fields":{"title":{"boost":1000.0},"text":{"boost":1.0},"tags":{"boost":1000000.0}}},"docs":[{"location":"","title":"Hatch","text":"CI/CD Docs Package Meta

Hatch is a modern, extensible Python project manager. See the Why Hatch? page for more information.

"},{"location":"#license","title":"License","text":"

Hatch is distributed under the terms of the MIT license.

"},{"location":"#navigation","title":"Navigation","text":"

Documentation for specific MAJOR.MINOR versions can be chosen by using the dropdown on the top of every page. The dev version reflects changes that have not yet been released.

Also, desktop readers can use special keyboard shortcuts:

Keys Action Navigate to the \"previous\" page Navigate to the \"next\" page Display the search modal"},{"location":"build/","title":"Builds","text":""},{"location":"build/#configuration","title":"Configuration","text":"

Builds are configured using the tool.hatch.build table. Every target is defined by a section within tool.hatch.build.targets, for example:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.sdist]\nexclude = [\n  \"/.github\",\n  \"/docs\",\n]\n\n[tool.hatch.build.targets.wheel]\npackages = [\"src/foo\"]\n
[build.targets.sdist]\nexclude = [\n  \"/.github\",\n  \"/docs\",\n]\n\n[build.targets.wheel]\npackages = [\"src/foo\"]\n
"},{"location":"build/#building","title":"Building","text":"

Invoking the build command without any arguments will build the sdist and wheel targets:

$ hatch build\n[sdist]\ndist/hatch_demo-1rc0.tar.gz\n\n[wheel]\ndist/hatch_demo-1rc0-py3-none-any.whl\n

To only build specific targets, use the -t/--target option:

$ hatch build -t wheel\n[wheel]\ndist/hatch_demo-1rc0-py3-none-any.whl\n

If the target supports multiple versions, you can specify the exact versions to build by appending a colon followed by the desired versions separated by commas:

$ hatch -v build -t wheel:standard\n[wheel]\nBuilding `wheel` version `standard`\ndist/hatch_demo-1rc0-py3-none-any.whl\n
"},{"location":"build/#packaging-ecosystem","title":"Packaging ecosystem","text":"

Hatch complies with modern Python packaging specs and therefore your projects can be used by other tools with Hatch serving as just the build backend.

So you could use tox as an alternative to Hatch's environment management, or cibuildwheel to distribute packages for every platform, and they both will transparently use Hatch without any extra modification.

"},{"location":"environment/","title":"Environments","text":"

Environments are designed to allow for isolated workspaces for testing, building documentation, or anything else projects need.

Unless an environment is chosen explicitly, Hatch will use the default environment.

"},{"location":"environment/#creation","title":"Creation","text":"

You can create environments by using the env create command. Let's enter the directory of the project we created in the setup phase:

$ hatch env create\nCreating environment: default\nInstalling project in development mode\nSyncing dependencies\n

Tip

You never need to manually create environments as spawning a shell or running commands within one will automatically trigger creation.

"},{"location":"environment/#entering-environments","title":"Entering environments","text":"

You can spawn a shell within an environment by using the shell command.

$ hatch shell\n(hatch-demo) $\n

Now confirm the project has been installed:

(hatch-demo) $ pip show hatch-demo\nName: hatch-demo\nVersion: 0.0.1\n...\n

Finally, see where your environment's Python is located:

(hatch-demo) $ python -c \"import sys;print(sys.executable)\"\n...\n

You can type exit to leave the environment.

"},{"location":"environment/#command-execution","title":"Command execution","text":"

The run command allows you to execute commands in an environment as if you had already entered it. For example, running the following command will output the same path as before:

hatch run python -c \"import sys;print(sys.executable)\"\n
"},{"location":"environment/#scripts","title":"Scripts","text":"

You can also run any scripts that have been defined.

You'll notice that in the pyproject.toml file there are already scripts defined in the default environment. Try running the test command, which invokes pytest with some default arguments:

hatch run test\n

All additional arguments are passed through to that script, so for example if you wanted to see the version of pytest and which plugins are installed you could do:

hatch run test -VV\n
"},{"location":"environment/#dependencies","title":"Dependencies","text":"

Hatch ensures that environments are always compatible with the currently defined project dependencies (if installed and in dev mode) and environment dependencies.

To add cowsay as a dependency, open pyproject.toml and add it to the dependencies array:

pyproject.toml 
[project]\n...\ndependencies = [\n  \"cowsay\"\n]\n

This dependency will be installed the next time you spawn a shell or run a command. For example:

$ hatch run cowsay -t \"Hello, world!\"\nSyncing dependencies\n  _____________\n| Hello, world! |\n  =============\n             \\\n              \\\n                ^__^\n                (oo)\\_______\n                (__)\\       )\\/\\\n                    ||----w |\n                    ||     ||\n

Note

The Syncing dependencies status will display temporarily when Hatch updates environments in response to any dependency changes that you make.

"},{"location":"environment/#selection","title":"Selection","text":"

You can select which environment to enter or run commands in by using the -e/--env root option or by setting the HATCH_ENV environment variable.

The run command allows for more explicit selection by prepending <ENV_NAME>: to commands. For example, if you had the following configuration:

pyproject.toml hatch.toml 
[tool.hatch.envs.docs]\ndependencies = [\n  \"mkdocs\"\n]\n[tool.hatch.envs.docs.scripts]\nbuild = \"mkdocs build --clean --strict\"\nserve = \"mkdocs serve --dev-addr localhost:8000\"\n
[envs.docs]\ndependencies = [\n  \"mkdocs\"\n]\n[envs.docs.scripts]\nbuild = \"mkdocs build --clean --strict\"\nserve = \"mkdocs serve --dev-addr localhost:8000\"\n

you could then serve your documentation by running:

hatch run docs:serve\n

Tip

If you've already entered an environment, commands will target it by default.

"},{"location":"environment/#matrix","title":"Matrix","text":"

Every environment can define its own set of matrices:

pyproject.toml hatch.toml 
[tool.hatch.envs.test]\ndependencies = [\n  \"pytest\"\n]\n\n[[tool.hatch.envs.test.matrix]]\npython = [\"2.7\", \"3.8\"]\nversion = [\"42\", \"3.14\"]\n\n[[tool.hatch.envs.test.matrix]]\npython = [\"3.8\", \"3.9\"]\nversion = [\"9000\"]\nfeatures = [\"foo\", \"bar\"]\n
[envs.test]\ndependencies = [\n  \"pytest\"\n]\n\n[[envs.test.matrix]]\npython = [\"2.7\", \"3.8\"]\nversion = [\"42\", \"3.14\"]\n\n[[envs.test.matrix]]\npython = [\"3.8\", \"3.9\"]\nversion = [\"9000\"]\nfeatures = [\"foo\", \"bar\"]\n

Using the env show command would then display:

$ hatch env show --ascii\n     Standalone\n+---------+---------+\n| Name    | Type    |\n+=========+=========+\n| default | virtual |\n+---------+---------+\n                       Matrices\n+------+---------+---------------------+--------------+\n| Name | Type    | Envs                | Dependencies |\n+======+=========+=====================+==============+\n| test | virtual | test.py2.7-42       | pytest       |\n|      |         | test.py2.7-3.14     |              |\n|      |         | test.py3.8-42       |              |\n|      |         | test.py3.8-3.14     |              |\n|      |         | test.py3.8-9000-foo |              |\n|      |         | test.py3.8-9000-bar |              |\n|      |         | test.py3.9-9000-foo |              |\n|      |         | test.py3.9-9000-bar |              |\n+------+---------+---------------------+--------------+\n
"},{"location":"environment/#removal","title":"Removal","text":"

You can remove a single environment or environment matrix by using the env remove command or all of a project's environments by using the env prune command.

"},{"location":"install/","title":"Installation","text":""},{"location":"install/#installers","title":"Installers","text":"macOSWindows GUI installerCommand line installer
  1. In your browser, download the .pkg file: hatch-1.9.6.pkg
  2. Run your downloaded file and follow the on-screen instructions.
  3. Restart your terminal.

  4. To verify that the shell can find and run the hatch command in your PATH, use the following command.

    $ hatch --version\n1.9.6\n

  1. Download the file using the curl command. The -o option specifies the file name that the downloaded package is written to. In this example, the file is written to hatch-1.9.6.pkg in the current directory.

    curl -o hatch-1.9.6.pkg https://github.com/pypa/hatch/releases/download/hatch-v1.9.6/hatch-1.9.6.pkg\n

  2. Run the standard macOS installer program, specifying the downloaded .pkg file as the source. Use the -pkg parameter to specify the name of the package to install, and the -target / parameter for the drive in which to install the package. The files are installed to /usr/local/hatch, and an entry is created at /etc/paths.d/hatch that instructs shells to add the /usr/local/hatch directory to. You must include sudo on the command to grant write permissions to those folders.

    sudo installer -pkg ./hatch-1.9.6.pkg -target /\n

  3. Restart your terminal.

  4. To verify that the shell can find and run the hatch command in your PATH, use the following command.

    $ hatch --version\n1.9.6\n
GUI installerCommand line installer
  1. In your browser, download one the .msi files:
    • hatch-1.9.6-x64.msi
  2. Run your downloaded file and follow the on-screen instructions.
  3. Restart your terminal.

  4. To verify that the shell can find and run the hatch command in your PATH, use the following command.

    $ hatch --version\n1.9.6\n

  1. Download and run the installer using the standard Windows msiexec program, specifying one of the .msi files as the source. Use the /passive and /i parameters to request an unattended, normal installation.

    x64 
    msiexec /passive /i https://github.com/pypa/hatch/releases/download/hatch-v1.9.6/hatch-1.9.6-x64.msi\n

  2. Restart your terminal.

  3. To verify that the shell can find and run the hatch command in your PATH, use the following command.

    $ hatch --version\n1.9.6\n
"},{"location":"install/#standalone-binaries","title":"Standalone binaries","text":"

After downloading the archive corresponding to your platform and architecture, extract the binary to a directory that is on your PATH and rename to hatch.

LinuxmacOSWindows "},{"location":"install/#pip","title":"pip","text":"

Hatch is available on PyPI and can be installed with pip.

pip install hatch\n

Warning

This method modifies the Python environment in which you choose to install. Consider instead using pipx to avoid dependency conflicts.

"},{"location":"install/#pipx","title":"pipx","text":"

pipx allows for the global installation of Python applications in isolated environments.

pipx install hatch\n
"},{"location":"install/#homebrew","title":"Homebrew","text":"

See the formula for more details.

brew install hatch\n
"},{"location":"install/#conda","title":"Conda","text":"

See the feedstock for more details.

conda install -c conda-forge hatch\n

or with mamba:

mamba install hatch\n

Warning

This method modifies the Conda environment in which you choose to install. Consider instead using pipx or condax to avoid dependency conflicts.

"},{"location":"install/#macports","title":"MacPorts","text":"

See the port for more details.

sudo port install hatch\n
"},{"location":"install/#fedora","title":"Fedora","text":"

The minimum supported version is 37, currently in development as Rawhide.

sudo dnf install hatch\n
"},{"location":"install/#void-linux","title":"Void Linux","text":"
xbps-install hatch\n
"},{"location":"install/#build-system-availability","title":"Build system availability","text":"

Hatchling is Hatch's build backend which you will never need to install manually. See its changelog for version information.

"},{"location":"intro/","title":"Introduction","text":""},{"location":"intro/#setup","title":"Setup","text":"

Projects can be set up for use by Hatch using the new command.

"},{"location":"intro/#new-project","title":"New project","text":"

Let's say you want to create a project named Hatch Demo. You would run:

hatch new \"Hatch Demo\"\n

This would create the following structure in your current working directory:

hatch-demo\n\u251c\u2500\u2500 src\n\u2502   \u2514\u2500\u2500 hatch_demo\n\u2502       \u251c\u2500\u2500 __about__.py\n\u2502       \u2514\u2500\u2500 __init__.py\n\u251c\u2500\u2500 tests\n\u2502   \u2514\u2500\u2500 __init__.py\n\u251c\u2500\u2500 LICENSE.txt\n\u251c\u2500\u2500 README.md\n\u2514\u2500\u2500 pyproject.toml\n

Tip

There are many ways to customize project generation.

"},{"location":"intro/#existing-project","title":"Existing project","text":"

To initialize an existing project, enter the directory containing the project and run the following:

hatch new --init\n

If your project has a setup.py file the command will automatically migrate setuptools configuration for you. Otherwise, this will interactively guide you through the setup process.

"},{"location":"intro/#project-metadata","title":"Project metadata","text":"

Next you'll want to define more of your project's metadata located in the pyproject.toml file. You can specify things like its license, the supported versions of Python, and URLs referring to various parts of your project, like documentation.

"},{"location":"intro/#dependencies","title":"Dependencies","text":"

The last step of the setup process is to define any dependencies that you'd like your project to begin with.

"},{"location":"intro/#configuration","title":"Configuration","text":"

All project-specific configuration recognized by Hatch can be defined in either the pyproject.toml file, or a file named hatch.toml where options are not contained within the tool.hatch table:

pyproject.toml hatch.toml 
[tool.hatch]\noption = \"...\"\n\n[tool.hatch.table1]\noption = \"...\"\n\n[tool.hatch.table2]\noption = \"...\"\n
option = \"...\"\n\n[table1]\noption = \"...\"\n\n[table2]\noption = \"...\"\n

Top level keys in the latter file take precedence when defined in both.

Tip

If you want to make your file more compact, you can use dotted keys, turning the above example into:

pyproject.toml hatch.toml 
[tool.hatch]\noption = \"...\"\ntable1.option = \"...\"\ntable2.option = \"...\"\n
option = \"...\"\ntable1.option = \"...\"\ntable2.option = \"...\"\n
"},{"location":"next-steps/","title":"Next steps","text":""},{"location":"next-steps/#learn-more","title":"Learn more","text":"

At this point you should have a basic understanding of how to use Hatch.

Now you may want to check out advanced configuration for environments or builds, set up your preferred shell, or read more about Hatch's CLI.

After that, check out the Hatch Showcase project to see examples of what is possible.

Finally, if you see a need, feel free to write a plugin for extended functionality.

"},{"location":"next-steps/#community","title":"Community","text":"

For any projects using Hatch, you may add its official badge somewhere prominent like the README.

MarkdownreStructuredText 
[![Hatch project](https://img.shields.io/badge/%F0%9F%A5%9A-Hatch-4051b5.svg)](https://github.com/pypa/hatch)\n
.. image:: https://img.shields.io/badge/%F0%9F%A5%9A-Hatch-4051b5.svg\n   :alt: Hatch project\n   :target: https://github.com/pypa/hatch\n
"},{"location":"publish/","title":"Publishing","text":"

After your project is built, you can distribute it using the publish command.

The -p/--publisher option controls which publisher to use, with the default being index.

"},{"location":"publish/#artifact-selection","title":"Artifact selection","text":"

By default, the dist directory located at the root of your project will be used:

$ hatch publish\ndist/hatch_demo-1rc0-py3-none-any.whl ... success\ndist/hatch_demo-1rc0.tar.gz ... success\n\n[hatch-demo]\nhttps://pypi.org/project/hatch-demo/1rc0/\n

You can instead pass specific paths as arguments:

hatch publish /path/to/artifacts foo-1.tar.gz\n

Only files ending with .whl or .tar.gz will be published.

"},{"location":"publish/#repository","title":"Repository","text":"

You can select the repository with which to upload using the -r/--repo option or by setting the HATCH_INDEX_REPO environment variable.

Rather than specifying the full URL of a repository, you can use a named repository from a publish.index.repos table defined in Hatch's config file:

config.toml 
[publish.index.repos.private]\nurl = \"...\"\n...\n

The following repository names are reserved by Hatch and cannot be overridden:

Name Repository main https://upload.pypi.org/legacy/ test https://test.pypi.org/legacy/

The main repository is used by default.

"},{"location":"publish/#authentication","title":"Authentication","text":"

The first time you publish to a repository you need to authenticate using the -u/--user (environment variable HATCH_INDEX_USER) and -a/--auth (environment variable HATCH_INDEX_AUTH) options. You will be prompted if either option is not provided.

The user that most recently published to the chosen repository is cached, with their credentials saved to the system keyring, so that they will no longer need to provide authentication information.

For automated releasing to PyPI, it is recommended that you use per-project API tokens.

"},{"location":"publish/#confirmation","title":"Confirmation","text":"

You can require a confirmation prompt or use of the -y/--yes flag by setting publishers' disable option to true in either Hatch's config file or project-specific configuration (which takes precedence):

config.toml pyproject.toml hatch.toml 
[publish.index]\ndisable = true\n
[tool.hatch.publish.index]\ndisable = true\n
[publish.index]\ndisable = true\n
"},{"location":"version/","title":"Versioning","text":""},{"location":"version/#configuration","title":"Configuration","text":"

When the version is not statically set, configuration is defined in the tool.hatch.version table. The source option determines the source to use for retrieving and updating the version. The regex source is used by default.

The regex source requires an option path that represents a relative path to a file containing the project's version:

pyproject.toml hatch.toml 
[tool.hatch.version]\npath = \"src/hatch_demo/__about__.py\"\n
[version]\npath = \"src/hatch_demo/__about__.py\"\n

The default pattern looks for a variable named __version__ or VERSION that is set to a string containing the version, optionally prefixed with the lowercase letter v.

If this doesn't reflect how you store the version, you can define a different regular expression using the pattern option:

pyproject.toml hatch.toml 
[tool.hatch.version]\npath = \"pkg/__init__.py\"\npattern = \"BUILD = 'b(?P<version>[^']+)'\"\n
[version]\npath = \"pkg/__init__.py\"\npattern = \"BUILD = 'b(?P<version>[^']+)'\"\n

The pattern must have a named group called version that represents the version.

"},{"location":"version/#display","title":"Display","text":"

Invoking the version command without any arguments will display the current version of the project:

$ hatch version\n0.0.1\n
"},{"location":"version/#updating","title":"Updating","text":"

You can update the version like so:

$ hatch version \"0.1.0\"\nOld: 0.0.1\nNew: 0.1.0\n

The scheme option determines the scheme to use for parsing both the existing and new versions. The standard scheme is used by default, which is based on PEP 440.

Rather than setting the version explicitly, you can select the name of a segment used to increment the version:

$ hatch version minor\nOld: 0.1.0\nNew: 0.2.0\n

You can chain multiple segment updates with a comma. For example, if you wanted to release a preview of your project's first major version, you could do:

$ hatch version major,rc\nOld: 0.2.0\nNew: 1.0.0rc0\n

When you want to release the final version, you would do:

$ hatch version release\nOld: 1.0.0rc0\nNew: 1.0.0\n
"},{"location":"version/#supported-segments","title":"Supported segments","text":"

Here are the supported segments and how they would influence an existing version of 1.0.0:

Segments New version release 1.0.0 major 2.0.0 minor 1.1.0 micropatchfix 1.0.1 aalpha 1.0.0a0 bbeta 1.0.0b0 crcprepreview 1.0.0rc0 rrevpost 1.0.0.post0 dev 1.0.0.dev0"},{"location":"why/","title":"Why Hatch?","text":"

The high level value proposition of Hatch is that if one adopts all functionality then many other tools become unnecessary since there is support for everything one might require. Further, if one chooses to use only specific features then there are still benefits compared to alternatives.

"},{"location":"why/#build-backend","title":"Build backend","text":"

Hatchling, the build backend sister project, has many benefits compared to setuptools. Here we only compare setuptools as that is the one most people are familiar with.

Why not?:

If building extension modules is required then it is recommended that you continue using setuptools, or even other backends that specialize in interfacing with compilers.

"},{"location":"why/#environment-management","title":"Environment management","text":"

Here we compare to both tox and nox. At a high level, there are a few common advantages:

Why not?:

If you are using nox and you wish to migrate, and for some reason you notify sessions, then migration wouldn't be a straight translation but rather you might have to redesign that conditional step.

"},{"location":"why/#python-management","title":"Python management","text":"

Here we compare Python management to that of pyenv.

Why not?:

Currently, Hatch does not allow for the installation of specific patch release versions but rather only uses minor release granularity that tracks the latest patch release. If specific patch releases are important to you then it is best to use an alternative installation mechanism.

"},{"location":"blog/","title":"Blog","text":""},{"location":"blog/2022/10/08/hatch-v160/","title":"Hatch v1.6.0","text":"

Hatch v1.6.0 brings improvements to build environments, better handling of dynamic metadata, and support for tools like Visual Studio Code.

"},{"location":"blog/2022/10/08/hatch-v160/#build-environments","title":"Build environments","text":"

Originally, the environment interface method for providing builder sub-environments was intended to be used in conjunction with some cleanup logic in order to provide a fresh setup every time. However, this is unnecessary in practice because build dependencies rarely change.

Without caching, repeat build environment use is slow which affects the following scenarios:

Now a new environment interface method build_environment_exists is used by Hatch to determine whether or not it has already been created, for implementations that have a caching mechanism.

The virtual environment type now uses this method to cache build environments.

"},{"location":"blog/2022/10/08/hatch-v160/#project-metadata","title":"Project metadata","text":"

Dynamically defined metadata is now supported everywhere, thanks to the new caching of virtual build environments.

A project metadata command is introduced that displays the fully resolved metadata. The output format is JSON unless a field is specified as an argument.

For example, if you checkout a project that is built by Hatch, like FastAPI, and run:

hatch project metadata readme\n

only the readme text will be displayed. If the content is in Markdown, then Rich will render it directly in your terminal:

"},{"location":"blog/2022/10/08/hatch-v160/#virtual-environment-location","title":"Virtual environment location","text":"

The virtual environment type now uses a flat layout for storage in the configured virtual environment directory if the directory resides somewhere within the project root or if it is set to a .virtualenvs directory within the user's home directory.

For example, if you define the following Hatch configuration:

config.toml 
[dirs.env]\nvirtual = \".hatch\"\n

and the following matrix:

pyproject.toml hatch.toml 
[[tool.hatch.envs.test.matrix]]\npython = [\"3.7\", \"3.8\", \"3.9\", \"3.10\", \"3.11\"]\n
[[envs.test.matrix]]\npython = [\"3.7\", \"3.8\", \"3.9\", \"3.10\", \"3.11\"]\n

then locating environments with the following command:

hatch env find test\n

will show that the general directory structure is:

.hatch\n\u251c\u2500\u2500 test.py3.7\n\u251c\u2500\u2500 test.py3.8\n\u251c\u2500\u2500 test.py3.9\n\u251c\u2500\u2500 test.py3.10\n\u2514\u2500\u2500 test.py3.11\n

This flat structure is required for detection of virtual environments by tools like Visual Studio Code and PyCharm.

Additionally, the virtual environment type now supports a path option to specify an explicit path that all inherited environments will share, such as the common .venv.

"},{"location":"blog/2022/10/08/hatch-v160/#migration-script-improvements","title":"Migration script improvements","text":"

The script used to migrate existing projects from setuptools has been improved to handle more edge cases that were encountered in the wild and now no longer modifies the formatting of existing pyproject.toml configuration.

"},{"location":"blog/2022/10/08/hatch-v160/#hatchling","title":"Hatchling","text":"

Hatch now depends on Hatchling v1.11.0, which was also just released.

"},{"location":"blog/2022/10/08/hatch-v160/#environment-version-source","title":"Environment version source","text":"

A new env version source is available that allows for the project version to be defined by an environment variable.

"},{"location":"blog/2022/10/08/hatch-v160/#relaxed-version-bumping","title":"Relaxed version bumping","text":"

The standard version scheme now supports a validate-bump option that when set to false will forego the check when updating the version that the desired version is higher than the current version.

This use case comes from Project Jupyter:

A common pattern we use in Jupyter is to bump to a .dev0 minor version bump after making a release. If we have a bug fix that needs to go out in the interim, we'd rather not be forced to create a branch every time.

"},{"location":"blog/2023/12/11/hatch-v180/","title":"Hatch v1.8.0","text":"

Hatch v1.8.0 brings Python distribution management, static analysis and formatting backed by Ruff, and binaries for every platform.

"},{"location":"blog/2023/12/11/hatch-v180/#installation-made-easy","title":"Installation made easy","text":"

One thing that has been a perpetual problem for Hatch and other Python applications is that Python itself is a dependency. You, and more importantly your users, need to in some way get Python before your software can even be used. The recommended way to go about that is platform-dependent and even differs based on your target audience. I viewed this as a central UX problem for Hatch and so severe that I took a bit of a hiatus to solve it.

Luckily, I have to my satisfaction solved this problem in the form of PyApp. It is a runtime installer for Python projects written in Rust. Apps are distributed as standalone executables as users have come to expect and bootstrapping occurs upon the first invocation. Here is an example of what you would see the first time you run a binary from this release:

Now that we have binaries, creating installers for different platforms becomes trivial. Starting with this release not only are binaries available for every platform but also we have installers for Windows and macOS. The installer for macOS is signed using a certificate from the same account used to sign the official distributions from https://www.python.org, so users will not get any security pop-ups. Shout out to @ewdurbin for their extreme generosity in setting up multiple certificates in their free time!

These installers and binaries are now the recommended way to install and update Hatch. These binaries have built-in management so you can update to the latest version by running hatch self update.

Windows signing

In future we will sign the installers for Windows but I did not have time to look into how that works. macOS signing took way longer than I anticipated

"},{"location":"blog/2023/12/11/hatch-v180/#python-management","title":"Python management","text":"

For a long time I and other users have desired that Hatch gain the ability to manage Python distributions. In my mind this was always blocked on a better installation experience because there was sort of a chicken-or-egg problem where you want a Python manager but you first need Python. No longer is that the case!

The new python command group allows for easy installation of various distributions to arbitrary locations which are then added to your PATH by default. Hatch supports CPython and PyPy distributions:

"},{"location":"blog/2023/12/11/hatch-v180/#virtual-environment-python-resolution","title":"Virtual environment Python resolution","text":"

The virtual environment type is now far more intelligent when resolving the parent distribution to use and guarantees that, when no specific version is requested, the resolved distribution will always be compatible with the project.

Additionally, when a requested version cannot be found on PATH it will automatically be downloaded and managed internally.

"},{"location":"blog/2023/12/11/hatch-v180/#static-analysis","title":"Static analysis","text":"

There is a new fmt command, backed entirely by Ruff, that checks and fixes your code for formatting and linting issues.

Starting with this release, Hatch maintains default settings that are guaranteed to be up-to-date and represent best practices for programming in modern Python. The idea is to provide defaults that are so broadly applicable that the majority of users will maintain little if any of their own overrides.

The default behavior is internal management of settings to provide an OOTB experience that works. It is recommended however that you persist the default config file in version control so that other tools like IDEs can utilize your full configuration.

Since Ruff is now provided as a built-in feature, new project templates no longer have such configuration and are much less verbose.

"},{"location":"blog/2023/12/11/hatch-v180/#build-improvements","title":"Build improvements","text":"

Building projects that do not use Hatchling as a backend is now supported and such builds are managed with the standard build tool.

The bridge between Hatch and the Hatchling CLI has been removed. Previously, the builder would send serialized messages to Hatch that would contain the desired content and style for each line of output. This was done in an effort to allow builder and build hook plugins to output pretty messages without actually requiring a dependency like Rich. A problem that arises with this is that builders that invoke subprocesses will not display ANSI codes as one might expect and will lose out on the interactive experience of such invocations, like the built-in app builder plugin calling cargo build. So now everything is simpler at the expense of no colored output without manual logic, or adding a dependency if you're a third-party plugin.

"},{"location":"blog/2023/12/11/hatch-v180/#faster-environment-usage","title":"Faster environment usage","text":"

Spawning a shell or running commands within environments always first checks that your project's dependencies are satisfied and if not synchronizes the environment with what is defined. Previously, this had the potential to be quite slow for projects that have many dependencies.

Now the set of dependency definitions is hashed and no check is performed if the hash is the same as before, significantly speeding up environment usage in most cases.

"},{"location":"blog/2023/12/11/hatch-v180/#hatchling","title":"Hatchling","text":"

Hatch now depends on Hatchling v1.19.0, which was also just released.

"},{"location":"blog/2023/12/11/hatch-v180/#better-defaults","title":"Better defaults","text":"

Hatchling is all about providing the best possible defaults, even at the expense of backward compatibility. In this release, there are two breaking changes that provide a much better user experience and were in fact requested by users.

"},{"location":"blog/2023/12/11/hatch-v180/#app-build-target","title":"App build target","text":"

A new app build target is now stable that allows for the building of standalone binaries for projects. This is what Hatch itself uses for its binaries.

"},{"location":"blog/2023/12/11/hatch-v180/#meta","title":"Meta","text":""},{"location":"blog/2023/12/11/hatch-v180/#why-hatch","title":"Why Hatch?","text":"

A new page has been introduced that discusses the value proposition of Hatch and Hatchling in comparison to alternatives. Currently, it only addresses a few features but in future this page will become more comprehensive.

"},{"location":"blog/2023/12/11/hatch-v180/#future","title":"Future","text":"

Upcoming features include a test command, commands to manage dependencies, and workspaces functionality similar to Cargo that will make managing monorepos far easier.

Next year there will be two large efforts that you should expect to see:

  1. A significant amount of my free time (and some at work) will be devoted to introducing lock file functionality in Hatch and trying to get whatever that happens to be standardized.

    I met with @brettcannon about his thoughts post-PEP 665 and about mousebender. I also met with the prefix.dev team about rip and was fortunate enough to be shown a demo before its official announcement.

    At the moment, the two options I see are to either go all in and contribute to mousebender or rely on the Prefix folks and use rip. The latter has the benefit of potentially supporting Conda as a side effect with the downside of being quite new with the spec firmly out of our control. The former has the benefit of being able to easily gain institutional support from the Python packaging team and each of our employers with the downside being a significant amount of work needing to be done.

  2. When @henryiii is able to get some free time away from teaching I plan to work with him once again and push very hard for the Python build ecosystem to adopt the extensionlib approach.

    I am of the opinion that the Python community has not fully completed the expressed outcome of PEP 517 in that build backends are still (for the most part) reliant on setuptools for building non-Python code bases.

    Basically, there are components that interact with compilers to produce extension modules and components that pack files into an archive which we call a build backend. These are two distinct pieces of functionality and my view is that there should be an API that allows backends to consume extension module builders to find out where things got created and where they should be shipped inside archives.

    In this hypothetical future any build backend would be able to trigger the building of extension modules based on user configuration.

"},{"location":"blog/2023/12/11/hatch-v180/#support","title":"Support","text":"

If you or your organization finds value in what Hatch provides, consider a sponsorship to assist with maintenance and more rapid development!

"},{"location":"blog/2023/12/18/hatch-v190/","title":"Hatch v1.9.0","text":"

Hatch v1.9.0 brings improvements to static analysis and important bug fixes.

"},{"location":"blog/2023/12/18/hatch-v190/#static-analysis","title":"Static analysis","text":"

The default version of Ruff has been increased to v0.1.8. This release brings formatting capabilities to docstrings and Hatch enables this by default with line length set to 80. This length was chosen as the default because it plays nicely with the rendering of the most popular themes for Python documentation, such as Material for MkDocs and Furo.

Additionally, it is now possible for projects to pin to specific versions of Ruff for upgrading at a later time:

pyproject.toml hatch.toml 
[tool.hatch.envs.hatch-static-analysis]\ndependencies = [\"ruff==X.Y.Z\"]\n
[envs.hatch-static-analysis]\ndependencies = [\"ruff==X.Y.Z\"]\n
"},{"location":"blog/2023/12/18/hatch-v190/#notable-fixes","title":"Notable fixes","text":""},{"location":"cli/about/","title":"About","text":""},{"location":"cli/about/#verbosity","title":"Verbosity","text":"

The amount of displayed output is controlled solely by the -v/--verbose (environment variable HATCH_VERBOSE) and -q/--quiet (environment variable HATCH_QUIET) root options.

The levels are documented here.

"},{"location":"cli/about/#project-awareness","title":"Project awareness","text":"

No matter the mode, Hatch will always change to the project's root directory for entering or running commands in environments.

"},{"location":"cli/about/#tab-completion","title":"Tab completion","text":"

Completion is achieved by saving a script and then executing it as a part of your shell's startup sequence.

Afterward, you'll need to start a new shell in order for the changes to take effect.

BashZ shellfish

Save the script somewhere:

_HATCH_COMPLETE=bash_source hatch > ~/.hatch-complete.bash\n

Source the file in ~/.bashrc (or ~/.bash_profile if on macOS):

. ~/.hatch-complete.bash\n

Save the script somewhere:

_HATCH_COMPLETE=zsh_source hatch > ~/.hatch-complete.zsh\n

Source the file in ~/.zshrc:

. ~/.hatch-complete.zsh\n

Save the script in ~/.config/fish/completions:

_HATCH_COMPLETE=fish_source hatch > ~/.config/fish/completions/hatch.fish\n
"},{"location":"cli/reference/","title":"hatch","text":"

Usage:

hatch [OPTIONS] COMMAND [ARGS]...\n

Options:

Name Type Description Default --env, -e text The name of the environment to use [env var: HATCH_ENV] default --project, -p text The name of the project to work on [env var: HATCH_PROJECT] None --verbose, -v integer range (0 and above) Increase verbosity (can be used additively) [env var: HATCH_VERBOSE] 0 --quiet, -q integer range (0 and above) Decrease verbosity (can be used additively) [env var: HATCH_QUIET] 0 --color / --no-color boolean Whether or not to display colored output (default is auto-detection) [env vars: FORCE_COLOR/NO_COLOR] None --interactive / --no-interactive boolean Whether or not to allow features like prompts and progress bars (default is auto-detection) [env var: HATCH_INTERACTIVE] None --data-dir text The path to a custom directory used to persist data [env var: HATCH_DATA_DIR] None --cache-dir text The path to a custom directory used to cache data [env var: HATCH_CACHE_DIR] None --config text The path to a custom config file to use [env var: HATCH_CONFIG] None --version boolean Show the version and exit. False --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-build","title":"hatch build","text":"

Build a project.

Usage:

hatch build [OPTIONS] [LOCATION]\n

Options:

Name Type Description Default --target, -t text The target to build, overriding project defaults. This may be selected multiple times e.g. -t sdist -t wheel None --hooks-only boolean Whether or not to only execute build hooks [env var: HATCH_BUILD_HOOKS_ONLY] False --no-hooks boolean Whether or not to disable build hooks [env var: HATCH_BUILD_NO_HOOKS] False --ext boolean Whether or not to only execute build hooks for distributing binary Python packages, such as compiling extensions. Equivalent to --hooks-only -t wheel False --clean, -c boolean Whether or not existing artifacts should first be removed [env var: HATCH_BUILD_CLEAN] False --clean-hooks-after boolean Whether or not build hook artifacts should be removed after each build [env var: HATCH_BUILD_CLEAN_HOOKS_AFTER] False --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-clean","title":"hatch clean","text":"

Remove build artifacts.

Usage:

hatch clean [OPTIONS] [LOCATION]\n

Options:

Name Type Description Default --target, -t text The target with which to remove artifacts, overriding project defaults. This may be selected multiple times e.g. -t sdist -t wheel None --hooks-only boolean Whether or not to only remove artifacts from build hooks [env var: HATCH_BUILD_HOOKS_ONLY] False --no-hooks boolean Whether or not to ignore artifacts from build hooks [env var: HATCH_BUILD_NO_HOOKS] False --ext boolean Whether or not to only remove artifacts from build hooks for distributing binary Python packages, such as compiled extensions. Equivalent to --hooks-only -t wheel False --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-config","title":"hatch config","text":"

Manage the config file

Usage:

hatch config [OPTIONS] COMMAND [ARGS]...\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-config-explore","title":"hatch config explore","text":"

Open the config location in your file manager.

Usage:

hatch config explore [OPTIONS]\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-config-find","title":"hatch config find","text":"

Show the location of the config file.

Usage:

hatch config find [OPTIONS]\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-config-restore","title":"hatch config restore","text":"

Restore the config file to default settings.

Usage:

hatch config restore [OPTIONS]\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-config-set","title":"hatch config set","text":"

Assign values to config file entries. If the value is omitted, you will be prompted, with the input hidden if it is sensitive.

Usage:

hatch config set [OPTIONS] KEY [VALUE]\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-config-show","title":"hatch config show","text":"

Show the contents of the config file.

Usage:

hatch config show [OPTIONS]\n

Options:

Name Type Description Default --all, -a boolean Do not scrub secret fields False --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-config-update","title":"hatch config update","text":"

Update the config file with any new fields.

Usage:

hatch config update [OPTIONS]\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-dep","title":"hatch dep","text":"

Manage environment dependencies

Usage:

hatch dep [OPTIONS] COMMAND [ARGS]...\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-dep-hash","title":"hatch dep hash","text":"

Output a hash of the currently defined dependencies.

Usage:

hatch dep hash [OPTIONS]\n

Options:

Name Type Description Default --project-only, -p boolean Whether or not to exclude environment dependencies False --env-only, -e boolean Whether or not to exclude project dependencies False --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-dep-show","title":"hatch dep show","text":"

Display dependencies in various formats

Usage:

hatch dep show [OPTIONS] COMMAND [ARGS]...\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-dep-show-requirements","title":"hatch dep show requirements","text":"

Enumerate dependencies as a list of requirements.

Usage:

hatch dep show requirements [OPTIONS]\n

Options:

Name Type Description Default --project-only, -p boolean Whether or not to exclude environment dependencies False --env-only, -e boolean Whether or not to exclude project dependencies False --feature, -f text Whether or not to only show the dependencies of the specified features None --all boolean Whether or not to include the dependencies of all features False --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-dep-show-table","title":"hatch dep show table","text":"

Enumerate dependencies in a tabular format.

Usage:

hatch dep show table [OPTIONS]\n

Options:

Name Type Description Default --project-only, -p boolean Whether or not to exclude environment dependencies False --env-only, -e boolean Whether or not to exclude project dependencies False --lines, -l boolean Whether or not to show lines between table rows False --ascii boolean Whether or not to only use ASCII characters False --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-env","title":"hatch env","text":"

Manage project environments

Usage:

hatch env [OPTIONS] COMMAND [ARGS]...\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-env-create","title":"hatch env create","text":"

Create environments.

Usage:

hatch env create [OPTIONS] [ENV_NAME]\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-env-find","title":"hatch env find","text":"

Locate environments.

Usage:

hatch env find [OPTIONS] [ENV_NAME]\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-env-prune","title":"hatch env prune","text":"

Remove all environments.

Usage:

hatch env prune [OPTIONS]\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-env-remove","title":"hatch env remove","text":"

Remove environments.

Usage:

hatch env remove [OPTIONS] [ENV_NAME]\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-env-run","title":"hatch env run","text":"

Run commands within project environments.

The -e/--env option overrides the equivalent root option and the HATCH_ENV environment variable.

If environments provide matrices, then you may use the -i/--include and -x/--exclude options to select or exclude certain variables, optionally followed by specific comma-separated values. For example, if you have the following configuration:

pyproject.toml hatch.toml 
[[tool.hatch.envs.test.matrix]]\npython = [\"3.9\", \"3.10\"]\nversion = [\"42\", \"3.14\", \"9000\"]\n
[[envs.test.matrix]]\npython = [\"3.9\", \"3.10\"]\nversion = [\"42\", \"3.14\", \"9000\"]\n

then running:

hatch env run -i py=3.10 -x version=9000 test:pytest\n

would execute pytest in the environments test.py3.10-42 and test.py3.10-3.14. Note that py may be used as an alias for python.

Usage:

hatch env run [OPTIONS] ARGS...\n

Options:

Name Type Description Default --env, -e text The environments to target None --include, -i text The matrix variables to include None --exclude, -x text The matrix variables to exclude None --filter, -f text The JSON data used to select environments None --force-continue boolean Run every command and if there were any errors exit with the first code False --ignore-compat boolean Ignore incompatibility when selecting specific environments False --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-env-show","title":"hatch env show","text":"

Show the available environments.

Usage:

hatch env show [OPTIONS] [ENVS]...\n

Options:

Name Type Description Default --ascii boolean Whether or not to only use ASCII characters False --json boolean Whether or not to output in JSON format False --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-fmt","title":"hatch fmt","text":"

Format and lint source code.

Usage:

hatch fmt [OPTIONS] [ARGS]...\n

Options:

Name Type Description Default --check boolean Only check for errors rather than fixing them False --preview / --no-preview boolean Preview new rules and formatting None --linter, -l boolean Only run the linter False --formatter, -f boolean Only run the formatter False --sync boolean Sync the default config file with the current version of Hatch False --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-new","title":"hatch new","text":"

Create or initialize a project.

Usage:

hatch new [OPTIONS] [NAME] [LOCATION]\n

Options:

Name Type Description Default --interactive, -i boolean Interactively choose details about the project False --cli boolean Give the project a command line interface False --init boolean Initialize an existing project False --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-project","title":"hatch project","text":"

View project information

Usage:

hatch project [OPTIONS] COMMAND [ARGS]...\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-project-metadata","title":"hatch project metadata","text":"

Display project metadata.

If you want to view the raw readme file without rendering, you can use a JSON parser like jq:

hatch project metadata | jq -r .readme\n

Usage:

hatch project metadata [OPTIONS] [FIELD]\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-publish","title":"hatch publish","text":"

Publish build artifacts.

Usage:

hatch publish [OPTIONS] [ARTIFACTS]...\n

Options:

Name Type Description Default --repo, -r text The repository with which to publish artifacts [env var: HATCH_INDEX_REPO] None --user, -u text The user with which to authenticate [env var: HATCH_INDEX_USER] None --auth, -a text The credentials to use for authentication [env var: HATCH_INDEX_AUTH] None --ca-cert text The path to a CA bundle [env var: HATCH_INDEX_CA_CERT] None --client-cert text The path to a client certificate, optionally containing the private key [env var: HATCH_INDEX_CLIENT_CERT] None --client-key text The path to the client certificate's private key [env var: HATCH_INDEX_CLIENT_KEY] None --no-prompt, -n boolean Disable prompts, such as for missing required fields False --initialize-auth boolean Save first-time authentication information even if nothing was published False --publisher, -p text The publisher plugin to use (default is index) [env var: HATCH_PUBLISHER] index --option, -o text Options to pass to the publisher plugin. This may be selected multiple times e.g. -o foo=bar -o baz=23 [env var: HATCH_PUBLISHER_OPTIONS] None --yes, -y boolean Confirm without prompting when the plugin is disabled False --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-python","title":"hatch python","text":"

Manage Python installations

Usage:

hatch python [OPTIONS] COMMAND [ARGS]...\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-python-find","title":"hatch python find","text":"

Locate Python binaries.

Usage:

hatch python find [OPTIONS] NAME\n

Options:

Name Type Description Default -p, --parent boolean Show the parent directory of the Python binary False --dir, -d text The directory in which distributions reside None --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-python-install","title":"hatch python install","text":"

Install Python distributions.

You may select all to install all compatible distributions:

hatch python install all\n

Usage:

hatch python install [OPTIONS] NAMES...\n

Options:

Name Type Description Default --private boolean Do not add distributions to the user PATH False --update, -u boolean Update existing installations False --dir, -d text The directory in which to install distributions, overriding configuration None --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-python-remove","title":"hatch python remove","text":"

Remove Python distributions.

You may select all to remove all installed distributions:

hatch python remove all\n

Usage:

hatch python remove [OPTIONS] NAMES...\n

Options:

Name Type Description Default --dir, -d text The directory in which distributions reside None --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-python-show","title":"hatch python show","text":"

Show the available Python distributions.

Usage:

hatch python show [OPTIONS]\n

Options:

Name Type Description Default --ascii boolean Whether or not to only use ASCII characters False --dir, -d text The directory in which distributions reside None --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-python-update","title":"hatch python update","text":"

Update Python distributions.

You may select all to update all installed distributions:

hatch python update all\n

Usage:

hatch python update [OPTIONS] NAMES...\n

Options:

Name Type Description Default --dir, -d text The directory in which distributions reside None --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-run","title":"hatch run","text":"

Run commands within project environments. This is a convenience wrapper around the env run command.

If the first argument contains a colon, then the preceding component will be interpreted as the name of the environment to target, overriding the -e/--env root option and the HATCH_ENV environment variable.

If the environment provides matrices, then you may also provide leading arguments starting with a + or - to select or exclude certain variables, optionally followed by specific comma-separated values. For example, if you have the following configuration:

pyproject.toml hatch.toml 
[[tool.hatch.envs.test.matrix]]\npython = [\"3.9\", \"3.10\"]\nversion = [\"42\", \"3.14\", \"9000\"]\n
[[envs.test.matrix]]\npython = [\"3.9\", \"3.10\"]\nversion = [\"42\", \"3.14\", \"9000\"]\n

then running:

hatch run +py=3.10 -version=9000 test:pytest\n

would execute pytest in the environments test.py3.10-42 and test.py3.10-3.14. Note that py may be used as an alias for python.

Usage:

hatch run [OPTIONS] [ENV:]ARGS...\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-shell","title":"hatch shell","text":"

Enter a shell within a project's environment.

Usage:

hatch shell [OPTIONS] [SHELL_NAME] [SHELL_PATH] [SHELL_ARGS]...\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-status","title":"hatch status","text":"

Show information about the current environment.

Usage:

hatch status [OPTIONS]\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-version","title":"hatch version","text":"

View or set a project's version.

Usage:

hatch version [OPTIONS] [DESIRED_VERSION]\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"community/contributing/","title":"Contributing","text":"

The usual process to make a contribution is to:

  1. Check for existing related issues
  2. Fork the repository and create a new branch
  3. Make your changes
  4. Make sure formatting, linting and tests passes.
  5. Add tests if possible to cover the lines you added.
  6. Commit, and send a Pull Request.
"},{"location":"community/contributing/#clone-the-repository","title":"Clone the repository","text":"

Clone the hatch repository, cd into it, and create a new branch for your contribution:

cd hatch\ngit checkout -b add-my-contribution\n
"},{"location":"community/contributing/#run-the-tests","title":"Run the tests","text":"

Run the test suite while developing:

hatch run dev\n

Run the test suite with coverage report:

hatch run cov\n

Run the extended test suite with coverage:

hatch run full\n
"},{"location":"community/contributing/#lint","title":"Lint","text":"

Run automated formatting:

hatch run lint:fmt\n

Run full linting and type checking:

hatch run lint:all\n
"},{"location":"community/contributing/#docs","title":"Docs","text":"

Start the documentation in development:

hatch run docs:serve\n

Build and validate the documentation website:

hatch run build-check\n
"},{"location":"community/highlights/","title":"Highlights","text":""},{"location":"community/highlights/#integration","title":"Integration","text":""},{"location":"community/highlights/#adoption","title":"Adoption","text":""},{"location":"community/users/","title":"Users","text":"

The following is not intended to be a complete enumeration. Be sure to view the development version of this page for an up-to-date listing.

"},{"location":"community/users/#projects","title":"Projects","text":"

aiogram | argon2-cffi | attrs | Black | coffea | Colorama | Django Anymail | Django Debug Toolbar | Django Wiki | FastAPI | filelock | github3.py | Gradio | HTTPX | iCalendar for Humans | LinkChecker | Material for MkDocs | MkDocs | openSUSE | Nox | Packit | pipx | platformdirs | Pydantic | Pygments | PyHamcrest | PyMdown Extensions | Python JSON Schema | Rye | SALib | Spack | Starlette | structlog | tox | Twisted | urllib3 | Uvicorn | virtualenv | Voil\u00e0 | XGBoost | Ypy

"},{"location":"community/users/#industry","title":"Industry","text":""},{"location":"community/users/#organizations","title":"Organizations","text":""},{"location":"community/users/#government","title":"Government","text":""},{"location":"community/users/#academia","title":"Academia","text":""},{"location":"community/users/#research","title":"Research","text":""},{"location":"community/users/#security","title":"Security","text":""},{"location":"community/users/#crypto","title":"Crypto","text":""},{"location":"config/build/","title":"Build configuration","text":"

Build targets are defined as sections within tool.hatch.build.targets:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.<TARGET_NAME>]\n
[build.targets.<TARGET_NAME>]\n

Tip

Although not recommended, you may define global configuration in the tool.hatch.build table. Keys may then be overridden by target config.

"},{"location":"config/build/#build-system","title":"Build system","text":"

To be compatible with the broader Python packaging ecosystem, you must define the build system as follows:

pyproject.toml 
[build-system]\nrequires = [\"hatchling\"]\nbuild-backend = \"hatchling.build\"\n

The version of hatchling defined here will be used to build all targets.

Hatchling is a standards-compliant1 build backend and is a dependency of Hatch itself.

"},{"location":"config/build/#file-selection","title":"File selection","text":""},{"location":"config/build/#vcs","title":"VCS","text":"

By default, Hatch will respect the first .gitignore or .hgignore file found in your project's root directory or parent directories. Set ignore-vcs to true to disable this behavior:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.sdist]\nignore-vcs = true\n
[build.targets.sdist]\nignore-vcs = true\n

Note

For .hgignore files only glob syntax is supported.

"},{"location":"config/build/#patterns","title":"Patterns","text":"

You can set the include and exclude options to select exactly which files will be shipped in each build, with exclude taking precedence. Every entry represents a Git-style glob pattern.

For example, the following configuration:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.sdist]\ninclude = [\n  \"pkg/*.py\",\n  \"/tests\",\n]\nexclude = [\n  \"*.json\",\n  \"pkg/_compat.py\",\n]\n
[build.targets.sdist]\ninclude = [\n  \"pkg/*.py\",\n  \"/tests\",\n]\nexclude = [\n  \"*.json\",\n  \"pkg/_compat.py\",\n]\n

will exclude every file with a .json extension, and will include everything under a tests directory located at the root and every file with a .py extension that is directly under a pkg directory located at the root except for _compat.py.

"},{"location":"config/build/#artifacts","title":"Artifacts","text":"

If you want to include files that are ignored by your VCS, such as those that might be created by build hooks, you can use the artifacts option. This option is semantically equivalent to include.

Note that artifacts are not affected by the exclude option. Artifacts can be excluded by using more explicit paths or by using the ! negation operator. When using the ! operator, the negated pattern(s) must come after the more generic ones.

pyproject.toml hatch.toml 
[tool.hatch.build.targets.wheel]\nartifacts = [\n  \"*.so\",\n  \"*.dll\",\n  \"!/foo/*.so\",\n]\n
[build.targets.wheel]\nartifacts = [\n  \"*.so\",\n  \"*.dll\",\n  \"!/foo/*.so\",\n]\n
"},{"location":"config/build/#explicit-selection","title":"Explicit selection","text":""},{"location":"config/build/#generic","title":"Generic","text":"

You can use the only-include option to prevent directory traversal starting at the project root and only select specific relative paths to directories or files. Using this option ignores any defined include patterns.

pyproject.toml hatch.toml 
[tool.hatch.build.targets.sdist]\nonly-include = [\"pkg\", \"tests/unit\"]\n
[build.targets.sdist]\nonly-include = [\"pkg\", \"tests/unit\"]\n
"},{"location":"config/build/#packages","title":"Packages","text":"

The packages option is semantically equivalent to only-include (which takes precedence) except that the shipped path will be collapsed to only include the final component.

So for example, if you want to ship a package foo that is stored in a directory src you would do:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.wheel]\npackages = [\"src/foo\"]\n
[build.targets.wheel]\npackages = [\"src/foo\"]\n
"},{"location":"config/build/#forced-inclusion","title":"Forced inclusion","text":"

The force-include option allows you to select specific files or directories from anywhere on the file system that should be included and map them to the desired relative distribution path.

For example, if there was a directory alongside the project root named artifacts containing a file named lib.so and a file named lib.h in your home directory, you could ship both files in a pkg directory with the following configuration:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.wheel.force-include]\n\"../artifacts\" = \"pkg\"\n\"~/lib.h\" = \"pkg/lib.h\"\n
[build.targets.wheel.force-include]\n\"../artifacts\" = \"pkg\"\n\"~/lib.h\" = \"pkg/lib.h\"\n

Note

Warning

Files included using this option will overwrite any file path that was already included by other file selection options.

"},{"location":"config/build/#default-file-selection","title":"Default file selection","text":"

If no file selection options are provided, then what gets included is determined by each build target.

"},{"location":"config/build/#excluding-files-outside-packages","title":"Excluding files outside packages","text":"

If you want to exclude non-artifact files that do not reside within a Python package, set only-packages to true:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.wheel]\nonly-packages = true\n
[build.targets.wheel]\nonly-packages = true\n
"},{"location":"config/build/#rewriting-paths","title":"Rewriting paths","text":"

You can rewrite relative paths to directories with the sources option. For example, the following configuration:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.wheel.sources]\n\"src/foo\" = \"bar\"\n
[build.targets.wheel.sources]\n\"src/foo\" = \"bar\"\n

would distribute the file src/foo/file.ext as bar/file.ext.

If you want to remove path prefixes entirely, rather than setting each to an empty string, you can define sources as an array:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.wheel]\nsources = [\"src\"]\n
[build.targets.wheel]\nsources = [\"src\"]\n

If you want to add a prefix to paths, you can use an empty string. For example, the following configuration:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.wheel.sources]\n\"\" = \"foo\"\n
[build.targets.wheel.sources]\n\"\" = \"foo\"\n

would distribute the file bar/file.ext as foo/bar/file.ext.

The packages option itself relies on sources. Defining packages = [\"src/foo\"] for the wheel target is equivalent to the following:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.wheel]\nonly-include = [\"src/foo\"]\nsources = [\"src\"]\n
[build.targets.wheel]\nonly-include = [\"src/foo\"]\nsources = [\"src\"]\n
"},{"location":"config/build/#performance","title":"Performance","text":"

All encountered directories are traversed by default. To skip non-artifact directories that are excluded, set skip-excluded-dirs to true:

pyproject.toml hatch.toml 
[tool.hatch.build]\nskip-excluded-dirs = true\n
[build]\nskip-excluded-dirs = true\n

Warning

This may result in not shipping desired files. For example, if you want to include the file a/b/c.txt but your VCS ignores a/b, the file c.txt will not be seen because its parent directory will not be entered. In such cases you can use the force-include option.

"},{"location":"config/build/#reproducible-builds","title":"Reproducible builds","text":"

By default, build targets will build in a reproducible manner provided that they support that behavior. To disable this, set reproducible to false:

pyproject.toml hatch.toml 
[tool.hatch.build]\nreproducible = false\n
[build]\nreproducible = false\n

When enabled, the SOURCE_DATE_EPOCH environment variable will be used for all build timestamps. If not set, then Hatch will use an unchanging default value.

"},{"location":"config/build/#output-directory","title":"Output directory","text":"

When the output directory is not provided to the build command, the dist directory will be used by default. You can change the default to a different directory using a relative or absolute path like so:

pyproject.toml hatch.toml 
[tool.hatch.build]\ndirectory = \"<PATH>\"\n
[build]\ndirectory = \"<PATH>\"\n
"},{"location":"config/build/#dev-mode","title":"Dev mode","text":"

By default for dev mode environment installations or editable installs, the wheel target will determine which directories should be added to Python's search path based on the selected files.

If you want to override this detection or perhaps instruct other build targets as well, you can use the dev-mode-dirs option:

pyproject.toml hatch.toml 
[tool.hatch.build]\ndev-mode-dirs = [\".\"]\n
[build]\ndev-mode-dirs = [\".\"]\n

If you don't want to add entire directories to Python's search path, you can enable a more targeted mechanism with the mutually exclusive dev-mode-exact option:

pyproject.toml hatch.toml 
[tool.hatch.build]\ndev-mode-exact = true\n
[build]\ndev-mode-exact = true\n

Warning

The dev-mode-exact mechanism is not supported by static analysis tools & IDEs, therefore functionality such as autocompletion is unlikely to work.

"},{"location":"config/build/#build-targets","title":"Build targets","text":"

A build target can be provided by any builder plugin. There are three built-in build targets: wheel, sdist, and custom.

"},{"location":"config/build/#dependencies","title":"Dependencies","text":"

You can specify additional dependencies that will be installed in each build environment, such as for third party builders:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.your-target-name]\ndependencies = [\n  \"your-builder-plugin\"\n]\n
[build.targets.your-target-name]\ndependencies = [\n  \"your-builder-plugin\"\n]\n

You can also declare dependence on the project's runtime dependencies with the require-runtime-dependencies option:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.your-target-name]\nrequire-runtime-dependencies = true\n
[build.targets.your-target-name]\nrequire-runtime-dependencies = true\n

Additionally, you may declare dependence on specific runtime features of the project with the require-runtime-features option:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.your-target-name]\nrequire-runtime-features = [\n  \"feature1\",\n  \"feature2\",\n]\n
[build.targets.your-target-name]\nrequire-runtime-features = [\n  \"feature1\",\n  \"feature2\",\n]\n
"},{"location":"config/build/#versions","title":"Versions","text":"

If a build target supports multiple build strategies or if there are major changes over time, you can specify exactly which versions you want to build using the versions option:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.<TARGET_NAME>]\nversions = [\n  \"v1\",\n  \"beta-feature\",\n]\n
[build.targets.<TARGET_NAME>]\nversions = [\n  \"v1\",\n  \"beta-feature\",\n]\n

See the wheel target for a real world example.

"},{"location":"config/build/#build-hooks","title":"Build hooks","text":"

A build hook defines code that will be executed at various stages of the build process and can be provided by any build hook plugin. There is one built-in build hook: custom.

Build hooks can be applied either globally:

pyproject.toml hatch.toml 
[tool.hatch.build.hooks.<HOOK_NAME>]\n
[build.hooks.<HOOK_NAME>]\n

or to specific build targets:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.<TARGET_NAME>.hooks.<HOOK_NAME>]\n
[build.targets.<TARGET_NAME>.hooks.<HOOK_NAME>]\n
"},{"location":"config/build/#dependencies_1","title":"Dependencies","text":"

You can specify additional dependencies that will be installed in each build environment, such as for third party build hooks:

pyproject.toml hatch.toml 
[tool.hatch.build.hooks.your-hook-name]\ndependencies = [\n  \"your-build-hook-plugin\"\n]\n
[build.hooks.your-hook-name]\ndependencies = [\n  \"your-build-hook-plugin\"\n]\n

You can also declare dependence on the project's runtime dependencies with the require-runtime-dependencies option:

pyproject.toml hatch.toml 
[tool.hatch.build.hooks.your-hook-name]\nrequire-runtime-dependencies = true\n
[build.hooks.your-hook-name]\nrequire-runtime-dependencies = true\n

Additionally, you may declare dependence on specific runtime features of the project with the require-runtime-features option:

pyproject.toml hatch.toml 
[tool.hatch.build.hooks.your-hook-name]\nrequire-runtime-features = [\n  \"feature1\",\n  \"feature2\",\n]\n
[build.hooks.your-hook-name]\nrequire-runtime-features = [\n  \"feature1\",\n  \"feature2\",\n]\n
"},{"location":"config/build/#order-of-execution","title":"Order of execution","text":"

For each build target, build hooks execute in the order in which they are defined, starting with global hooks.

As an example, for the following configuration:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.foo.hooks.hook2]\n\n[tool.hatch.build.hooks.hook3]\n[tool.hatch.build.hooks.hook1]\n
[build.targets.foo.hooks.hook2]\n\n[build.hooks.hook3]\n[build.hooks.hook1]\n

When target foo is built, build hook hook3 will be executed first, followed by hook1, and then finally hook2.

"},{"location":"config/build/#conditional-execution","title":"Conditional execution","text":"

If you want to disable a build hook by default and control its use by environment variables, you can do so by setting the enable-by-default option to false:

pyproject.toml hatch.toml 
[tool.hatch.build.hooks.<HOOK_NAME>]\nenable-by-default = false\n
[build.hooks.<HOOK_NAME>]\nenable-by-default = false\n
"},{"location":"config/build/#environment-variables","title":"Environment variables","text":"Variable Default Description HATCH_BUILD_CLEAN false Whether or not existing artifacts should first be removed HATCH_BUILD_CLEAN_HOOKS_AFTER false Whether or not build hook artifacts should be removed after each build HATCH_BUILD_HOOKS_ONLY false Whether or not to only execute build hooks HATCH_BUILD_NO_HOOKS false Whether or not to disable all build hooks; this takes precedence over other options HATCH_BUILD_HOOKS_ENABLE false Whether or not to enable all build hooks HATCH_BUILD_HOOK_ENABLE_<HOOK_NAME> false Whether or not to enable the build hook named <HOOK_NAME> HATCH_BUILD_LOCATION dist The location with which to build the targets; only used by the build command

  1. Support for PEP 517 and PEP 660 guarantees interoperability with other build tools.\u00a0\u21a9

"},{"location":"config/context/","title":"Context formatting","text":"

You can populate configuration with the values of certain supported fields using the syntax of Python's format strings. Each field interprets the modifier part after the colon differently, if at all.

"},{"location":"config/context/#global-fields","title":"Global fields","text":"

Any configuration that declares support for context formatting will always support these fields.

"},{"location":"config/context/#paths","title":"Paths","text":"Field Description root The root project directory home The user's home directory

All paths support the following modifiers:

Modifier Description uri The normalized absolute URI path prefixed by file: real The path with all symbolic links resolved parent The parent of the preceding path

Tip

The parent modifier can be chained and may be combined with either the uri or real modifier, with the latter placed at the end. For example:

pyproject.toml hatch.toml 
[tool.hatch.envs.test]\ndependencies = [\n    \"example-project @ {root:parent:parent:uri}/example-project\",\n]\n
[envs.test]\ndependencies = [\n    \"example-project @ {root:parent:parent:uri}/example-project\",\n]\n
"},{"location":"config/context/#system-separators","title":"System separators","text":"Field Description / \\ on Windows, / otherwise ; ; on Windows, : otherwise"},{"location":"config/context/#environment-variables","title":"Environment variables","text":"

The env field and its modifier allow you to select the value of an environment variable. If the environment variable is not set, you must specify a default value as an additional modifier e.g. {env:PATH:DEFAULT}.

"},{"location":"config/context/#field-nesting","title":"Field nesting","text":"

You can insert fields within others. For example, if you wanted a script that displays the value of the environment variable FOO, with a fallback to the environment variable BAR, with its own fallback to the user's home directory, you could do the following:

pyproject.toml hatch.toml 
[tool.hatch.envs.test.scripts]\ndisplay = \"echo {env:FOO:{env:BAR:{home}}}\"\n
[envs.test.scripts]\ndisplay = \"echo {env:FOO:{env:BAR:{home}}}\"\n
"},{"location":"config/dependency/","title":"Dependency configuration","text":"

Project dependencies are defined with PEP 508 strings using optional PEP 440 version specifiers.

"},{"location":"config/dependency/#version-specifiers","title":"Version specifiers","text":"

A version specifier consists of a series of version clauses, separated by commas. For example:

pyproject.toml 
[project]\n...\ndependencies = [\n  \"cryptography\",\n  \"click>=7, <9, != 8.0.0\",\n  \"python-dateutil==2.8.*\",\n  \"numpy~=1.21.4\",\n]\n

The comma is equivalent to a logical AND operator: a candidate version must match all given version clauses in order to match the specifier as a whole.

"},{"location":"config/dependency/#operators","title":"Operators","text":"Operators Function ~= Compatible release == Version matching != Version exclusion <=, >= Inclusive ordered comparison <, > Exclusive ordered comparison === Arbitrary equality"},{"location":"config/dependency/#version-matching","title":"Version matching","text":"

A version matching clause includes the version matching operator == and a version identifier.

By default, the version matching operator is based on a strict equality comparison: the specified version must be exactly the same as the requested version.

Clause Allowed versions ==1 1.0.0 ==1.2 1.2.0

Prefix matching may be requested instead of strict comparison, by appending a trailing .* to the version identifier in the version matching clause. This means that additional trailing segments will be ignored when determining whether or not a version identifier matches the clause.

Clause Allowed versions ==1.* >=1.0.0, <2.0.0 ==1.2.* >=1.2.0, <1.3.0"},{"location":"config/dependency/#compatible-release","title":"Compatible release","text":"

A compatible release clause consists of the compatible release operator ~= and a version identifier. It matches any candidate version that is expected to be compatible with the specified version.

For a given release identifier V.N, the compatible release clause is approximately equivalent to the following pair of comparison clauses:

>= V.N, == V.*\n

This operator cannot be used with a single segment version number such as ~=1.

Clause Allowed versions ~=1.2 >=1.2.0, <2.0.0 ~=1.2.3 >=1.2.3, <1.3.0"},{"location":"config/dependency/#version-exclusion","title":"Version exclusion","text":"

A version exclusion clause includes the version exclusion operator != and a version identifier.

The allowed version identifiers and comparison semantics are the same as those of the Version matching operator, except that the sense of any match is inverted.

"},{"location":"config/dependency/#ordered-comparison","title":"Ordered comparison","text":"

Inclusive comparisons allow for the version identifier part of clauses whereas exclusive comparisons do not. For example, >=1.2 allows for version 1.2.0 while >1.2 does not.

Unlike the inclusive ordered comparisons <= and >=, the exclusive ordered comparisons < and > specifically exclude pre-releases, post-releases, and local versions of the specified version.

"},{"location":"config/dependency/#arbitrary-equality","title":"Arbitrary equality","text":"

Though heavily discouraged, arbitrary equality comparisons allow for simple string matching without any version semantics, for example ===foobar.

"},{"location":"config/dependency/#environment-markers","title":"Environment markers","text":"

Environment markers allow for dependencies to only be installed when certain conditions are met.

For example, if you need to install the latest version of cryptography that is available for a given Python major version you could define the following:

cryptography==3.3.2; python_version < \"3\"\ncryptography>=35.0; python_version > \"3\"\n

Alternatively, if you only need it on Python 3 when running on Windows you could do:

cryptography; python_version ~= \"3.0\" and platform_system == \"Windows\"\n

The available environment markers are as follows.

Marker Python equivalent Examples os_name import osos.name sys_platform import syssys.platform platform_machine import platformplatform.machine() platform_python_implementation import platformplatform.python_implementation() platform_release import platformplatform.release() platform_system import platformplatform.system() platform_version import platformplatform.version() python_version import platform'.'.join(platform.python_version_tuple()[:2]) python_full_version import platformplatform.python_version() implementation_name import syssys.implementation.name implementation_version See here "},{"location":"config/dependency/#features","title":"Features","text":"

You can select groups of optional dependencies to install using the extras syntax. For example, if a dependency named foo defined the following:

pyproject.toml 
[project.optional-dependencies]\ncrypto = [\n  \"PyJWT\",\n  \"cryptography\",\n]\nfastjson = [\n  \"orjson\",\n]\ncli = [\n  \"prompt-toolkit\",\n  \"colorama; platform_system == 'Windows'\",\n]\n

You can select the cli and crypto features like so:

foo[cli,crypto]==1.*\n

Note that the features come immediately after the package name, before any version specifiers.

"},{"location":"config/dependency/#self-referential","title":"Self-referential","text":"

Feature groups can self-referentially extend others. For example, for a project called awesome-project, the dev feature group in the following pyproject.toml file would select everything in the crypto feature group, plus black:

pyproject.toml 
[project]\nname = \"awesome-project\"\n\n[project.optional-dependencies]\ncrypto = [\n  \"PyJWT\",\n  \"cryptography\",\n]\ndev = [\n  \"awesome-project[crypto]\",\n  \"black\",\n]\n
"},{"location":"config/dependency/#direct-references","title":"Direct references","text":"

Instead of using normal version specifiers and fetching packages from an index like PyPI, you can define exact sources using direct references with an explicit URI.

Direct references are usually not meant to be used for dependencies of a published project but rather are used for defining dependencies for an environment.

All direct reference types are prefixed by the package name like:

<NAME> @ <REFERENCE>\n
"},{"location":"config/dependency/#version-control-systems","title":"Version control systems","text":"

Various version control systems (VCS) are supported as long as the associated executable is available along your PATH.

VCS direct references are defined using one of the following formats:

<NAME> @ <SCHEME>://<PATH>\n<NAME> @ <SCHEME>://<PATH>@<REVISION>\n

You may also append a #subdirectory=<PATH> component for specifying the relative path to the Python package when it is not located at the root e.g. #subdirectory=lib/foo.

For more information, refer to this.

"},{"location":"config/dependency/#supported-vcs","title":"Supported VCS","text":"GitMercurialSubversionBazaar Executable Schemes Revisions Example git proj @ git+https://github.com/org/proj.git@v1 Executable Schemes Revisions Example hg proj @ hg+file:///path/to/proj@v1 Executable Schemes Revisions Example svn proj @ svn+file:///path/to/proj Executable Schemes Revisions Example bzr proj @ bzr+lp:proj@v1"},{"location":"config/dependency/#local","title":"Local","text":"

You can install local packages with the file scheme in the following format:

<NAME> @ file://<HOST>/<PATH>\n

The <HOST> is only used on Windows systems, where it can refer to a network share. If omitted it is assumed to be localhost and the third slash must still be present.

The <PATH> can refer to a source archive, a wheel, or a directory containing a Python package.

Type Unix Windows Source archive proj @ file:///path/to/pkg.tar.gz proj @ file:///c:/path/to/pkg.tar.gz Wheel proj @ file:///path/to/pkg.whl proj @ file:///c:/path/to/pkg.whl Directory proj @ file:///path/to/pkg proj @ file:///c:/path/to/pkg

Tip

You may also specify paths relative to your project's root directory on all platforms by using context formatting:

<NAME> @ {root:uri}/pkg_inside_project\n<NAME> @ {root:uri}/../pkg_alongside_project\n
"},{"location":"config/dependency/#remote","title":"Remote","text":"

You can install source archives and wheels by simply referring to a URL:

black @ https://github.com/psf/black/archive/refs/tags/21.10b0.zip\npytorch @ https://download.pytorch.org/whl/cu102/torch-1.10.0%2Bcu102-cp39-cp39-linux_x86_64.whl\n

An expected hash value may be specified by appending a #<HASH_ALGORITHM>=<EXPECTED_HASH> component:

requests @ https://github.com/psf/requests/archive/refs/tags/v2.26.0.zip#sha256=eb729a757f01c10546ebd179ae2aec852dd0d7f8ada2328ccf4558909d859985\n

If the hash differs from the expected hash, the installation will fail.

It is recommended that only hashes which are unconditionally provided by the latest version of the standard library's hashlib module be used for hashes. As of Python 3.10, that list consists of:

"},{"location":"config/dependency/#complex-syntax","title":"Complex syntax","text":"

The following is an example that uses features and environment markers:

pkg[feature1,feature2] @ <REFERENCE> ; python_version < \"3.7\"\n

Note that the space before the semicolon is required.

"},{"location":"config/hatch/","title":"Hatch configuration","text":"

Configuration for Hatch itself is stored in a config.toml file located by default in one of the following platform-specific directories.

Platform Path macOS ~/Library/Application Support/hatch Windows %USERPROFILE%\\AppData\\Local\\hatch Unix $XDG_CONFIG_HOME/hatch (the XDG_CONFIG_HOME environment variable default is ~/.config)

You can select a custom path to the file using the --config root option or by setting the HATCH_CONFIG environment variable.

The file can be managed by the config command group.

"},{"location":"config/hatch/#mode","title":"Mode","text":"

The mode key controls how Hatch selects the project to work on.

"},{"location":"config/hatch/#local","title":"Local","text":"config.toml 
mode = \"local\"\n

By default, Hatch will look for a pyproject.toml file in the current working directory and any parent directories. The directory storing the first found file will be considered the project root.

"},{"location":"config/hatch/#project","title":"Project","text":"config.toml 
mode = \"project\"\nproject = \"proj1\"\n\n[projects]\nproj1 = \"/path/to/project1\"\nproj2 = {\"location\": \"/path/to/project2\"}\n\n[dirs]\nproject = [\"/path/to/monorepo1\", \"/path/to/monorepo2\"]\n

In this mode, Hatch will only work on the selected project. The project is located using multiple heuristics:

  1. If the project is defined in the projects table then it must be a string, or an inline table with a location key, that is the full path to the project.
  2. If the project matches a subdirectory in any of the directories listed in dirs.project, then that will be used as the project root.

An error will occur if the project cannot be found.

You can use the config set command to change the project you are working on:

$ hatch config set project proj2\nNew setting:\nproject = \"proj2\"\n

The project can be selected on a per-command basis with the -p/--project (environment variable HATCH_PROJECT) root option.

"},{"location":"config/hatch/#aware","title":"Aware","text":"config.toml 
mode = \"aware\"\n

This is essentially the local mode with a fallback to the project mode.

"},{"location":"config/hatch/#shell","title":"Shell","text":"

You can control the shell used to enter environments with the shell key.

If defined as a string, it must be the name of one of the supported shells and be available along your PATH.

config.toml 
shell = \"fish\"\n

If the executable name of your shell differs from the supported name, you can define the shell as a table with name and path keys.

config.toml 
[shell]\nname = \"bash\"\npath = \"/bin/ash\"\n

You can change the default arguments used to spawn most shells with the args key. The default for such supported shells is usually [\"-i\"].

config.toml 
[shell]\nname = \"bash\"\nargs = [\"--login\"]\n
"},{"location":"config/hatch/#supported","title":"Supported","text":"Shell Name Arguments macOS Windows Unix Almquist shell ash [\"-i\"] Bash bash [\"-i\"] Command Prompt cmd C shell csh [\"-i\"] fish fish [\"-i\"] Nushell nu [] PowerShell pwsh, powershell tcsh tcsh [\"-i\"] xonsh xonsh [\"-i\"] Z shell zsh [\"-i\"]"},{"location":"config/hatch/#default","title":"Default","text":"

Hatch will attempt to use the current shell based on parent processes. If the shell cannot be determined, then on Windows systems Hatch will use the SHELL environment variable, if present, followed by the COMSPEC environment variable, defaulting to cmd. On all other platforms only the SHELL environment variable will be used, defaulting to bash.

"},{"location":"config/hatch/#directories","title":"Directories","text":""},{"location":"config/hatch/#data","title":"Data","text":"config.toml 
[dirs]\ndata = \"...\"\n

This is the directory that is used to persist data. By default it is set to one of the following platform-specific directories.

Platform Path macOS ~/Library/Application Support/hatch Windows %USERPROFILE%\\AppData\\Local\\hatch Unix $XDG_DATA_HOME/hatch (the XDG_DATA_HOME environment variable default is ~/.local/share)

You can select a custom path to the directory using the --data-dir root option or by setting the HATCH_DATA_DIR environment variable.

"},{"location":"config/hatch/#cache","title":"Cache","text":"config.toml 
[dirs]\ncache = \"...\"\n

This is the directory that is used to cache data. By default it is set to one of the following platform-specific directories.

Platform Path macOS ~/Library/Caches/hatch Windows %USERPROFILE%\\AppData\\Local\\hatch\\Cache Unix $XDG_CACHE_HOME/hatch (the XDG_CACHE_HOME environment variable default is ~/.cache)

You can select a custom path to the directory using the --cache-dir root option or by setting the HATCH_CACHE_DIR environment variable.

"},{"location":"config/hatch/#environments","title":"Environments","text":"config.toml 
[dirs.env]\n<ENV_TYPE> = \"...\"\n

This determines where to store environments, with every key being the type of environment and the value being the desired storage location.

For example, if you wanted to store virtual environments in a .virtualenvs directory within your home directory, you could specify the following:

config.toml 
[dirs.env]\nvirtual = \"~/.virtualenvs\"\n

Any environment variables are also expanded.

If the path is not absolute, then it will be relative to the project root. So if you wanted to use a directory named .hatch in each project directory, you could do:

config.toml 
[dirs.env]\nvirtual = \".hatch\"\n

Any type of environment that is not explicitly defined will default to <DATA_DIR>/env/<ENV_TYPE>.

"},{"location":"config/hatch/#python-installations","title":"Python installations","text":"config.toml 
[dirs]\npython = \"...\"\n

This determines where to install specific versions of Python.

The following values have special meanings:

Value Path isolated (default) <DATA_DIR>/pythons"},{"location":"config/hatch/#terminal","title":"Terminal","text":"

You can configure how all output is displayed using the terminal.styles table. These settings are also applied to all plugins.

config.toml 
[terminal.styles]\nerror = \"...\"\n...\n

Cross-platform terminal capabilities are provided by Rich.

"},{"location":"config/hatch/#output-levels","title":"Output levels","text":"

The levels of output are as follows. Note that the verbosity indicates the minimum level at which the output is displayed.

Level Default Verbosity Description debug bold 1 - 3 Messages that are not useful for most user experiences error bold red -2 Messages indicating some unrecoverable error info bold 0 Messages conveying basic information success bold cyan 0 Messages indicating some positive outcome waiting bold magenta 0 Messages shown before potentially time consuming operations warning bold yellow -1 Messages conveying important information

See the documentation and color reference for guidance on valid values.

"},{"location":"config/hatch/#spinner","title":"Spinner","text":"

You can select the sequence used for waiting animations with the spinner option.

config.toml 
[terminal.styles]\nspinner = \"...\"\n
"},{"location":"config/metadata/","title":"Project metadata","text":"

Project metadata is stored in a pyproject.toml file located at the root of a project's tree and is based entirely on the standard.

"},{"location":"config/metadata/#name","title":"Name (required)","text":"

The name of the project.

pyproject.toml 
[project]\nname = \"your-app\"\n
"},{"location":"config/metadata/#version","title":"Version (required)","text":"pyproject.toml DynamicStatic

See the dedicated versioning section.

[project]\n...\ndynamic = [\"version\"]\n\n[tool.hatch.version]\npath = \"...\"\n
[project]\n...\nversion = \"0.0.1\"\n
"},{"location":"config/metadata/#description","title":"Description","text":"

A brief summary of the project.

pyproject.toml 
[project]\n...\ndescription = '...'\n
"},{"location":"config/metadata/#readme","title":"Readme","text":"

The full description of the project.

pyproject.toml SimpleComplex

The file extension must be .md, .rst, or .txt.

[project]\n...\nreadme = \"README.md\"\n

The content-type field must be set to text/markdown, text/x-rst, or text/plain.

FileText

A charset field may also be set to instruct which encoding to use for reading the file, defaulting to utf-8.

[project]\n...\nreadme = {\"file\" = \"README.md\", \"content-type\" = \"text/markdown\"}\n

The content-type field must be set to text/markdown or text/x-rst.

[project]\n...\nreadme = {\"text\" = \"...\", \"content-type\" = \"text/markdown\"}\n

Note

If this is defined as a file, then it will always be included in source distributions for consistent builds.

"},{"location":"config/metadata/#python-support","title":"Python support","text":"

The Python version requirements of the project.

pyproject.toml 
[project]\n...\nrequires-python = \">=3.8\"\n
"},{"location":"config/metadata/#license","title":"License","text":"

For more information, see PEP 639.

pyproject.toml SPDX expressionFiles 
[project]\n...\nlicense = \"Apache-2.0 OR MIT\"\n
PathsGlobs 
[project]\n...\nlicense-files = { paths = [\"LICENSE.txt\"] }\n
[project]\n...\nlicense-files = { globs = [\"LICENSES/*\"] }\n
"},{"location":"config/metadata/#ownership","title":"Ownership","text":"

The people or organizations considered to be the authors or maintainers of the project. The exact meaning is open to interpretation; it may list the original or primary authors, current maintainers, or owners of the package. If the values are the same, prefer only the use of the authors field.

pyproject.toml 
[project]\n...\nauthors = [\n  { name = \"...\", email = \"...\" },\n]\nmaintainers = [\n  { name = \"...\", email = \"...\" },\n]\n
"},{"location":"config/metadata/#keywords","title":"Keywords","text":"

The keywords used to assist in the discovery of the project.

pyproject.toml 
[project]\n...\nkeywords = [\n  \"...\",\n]\n
"},{"location":"config/metadata/#classifiers","title":"Classifiers","text":"

The trove classifiers that apply to the project.

pyproject.toml 
[project]\n...\nclassifiers = [\n  \"...\",\n]\n
"},{"location":"config/metadata/#urls","title":"URLs","text":"

A table of URLs where the key is the URL label and the value is the URL itself.

pyproject.toml 
[project.urls]\nDocumentation = \"...\"\n\"Source code\" = \"...\"\n
"},{"location":"config/metadata/#dependencies","title":"Dependencies","text":"

See the dependency specification page for more information.

Entries support context formatting and disallow direct references by default.

"},{"location":"config/metadata/#required","title":"Required","text":"pyproject.toml 
[project]\n...\ndependencies = [\n  \"...\",\n]\n
"},{"location":"config/metadata/#optional","title":"Optional","text":"pyproject.toml 
[project.optional-dependencies]\noption1 = [\n  \"...\",\n]\noption2 = [\n  \"...\",\n]\n
"},{"location":"config/metadata/#entry-points","title":"Entry points","text":"

Entry points are a mechanism for the project to advertise components it provides to be discovered and used by other code.

"},{"location":"config/metadata/#cli","title":"CLI","text":"

After installing projects that define CLI scripts, each key will be available along your PATH as a command that will call its associated object.

pyproject.toml 
[project.scripts]\ncli-name = \"pkg.subpkg:func\"\n

Using the above example, running cli-name would essentially execute the following Python script:

import sys\n\nfrom pkg.subpkg import func\n\nsys.exit(func())\n
"},{"location":"config/metadata/#gui","title":"GUI","text":"

GUI scripts are exactly the same as CLI scripts except on Windows, where they are handled specially so that they can be started without a console.

pyproject.toml 
[project.gui-scripts]\ngui-name = \"pkg.subpkg:func\"\n
"},{"location":"config/metadata/#plugins","title":"Plugins","text":"pyproject.toml 
[project.entry-points.plugin-namespace]\nplugin-name1 = \"pkg.subpkg1\"\nplugin-name2 = \"pkg.subpkg2:func\"\n
"},{"location":"config/metadata/#dynamic","title":"Dynamic","text":"

If any metadata fields are set dynamically, like the version may be, then they must be listed here.

pyproject.toml 
[project]\n...\ndynamic = [\n  \"...\",\n]\n
"},{"location":"config/metadata/#metadata-options","title":"Metadata options","text":""},{"location":"config/metadata/#allowing-direct-references","title":"Allowing direct references","text":"

By default, dependencies are not allowed to define direct references. To disable this check, set allow-direct-references to true:

pyproject.toml hatch.toml 
[tool.hatch.metadata]\nallow-direct-references = true\n
[metadata]\nallow-direct-references = true\n
"},{"location":"config/metadata/#allowing-ambiguous-features","title":"Allowing ambiguous features","text":"

By default, names of optional dependencies are normalized to prevent ambiguity. To disable this normalization, set allow-ambiguous-features to true:

pyproject.toml hatch.toml 
[tool.hatch.metadata]\nallow-ambiguous-features = true\n
[metadata]\nallow-ambiguous-features = true\n

Deprecated

This option temporarily exists to provide better interoperability with tools that do not yet support PEP 685 and will be removed in the first minor release after Jan 1, 2024.

"},{"location":"config/project-templates/","title":"Project templates","text":"

You can control how new projects are created by the new command using Hatch's config file.

"},{"location":"config/project-templates/#author","title":"Author","text":"config.toml 
[template]\nname = \"...\"\nemail = \"...\"\n
"},{"location":"config/project-templates/#licenses","title":"Licenses","text":"config.toml 
[template.licenses]\nheaders = true\ndefault = [\n  \"MIT\",\n]\n

The list of licenses should be composed of SPDX identifiers. If multiple licenses are specified, then they will be placed in a LICENSES directory.

"},{"location":"config/project-templates/#options","title":"Options","text":""},{"location":"config/project-templates/#tests","title":"Tests","text":"

This adds a tests directory with environments for testing and linting.

config.toml 
[template.plugins.default]\ntests = true\n
"},{"location":"config/project-templates/#ci","title":"CI","text":"

This adds a GitHub Actions workflow that runs tests on all platforms using modern versions of Python.

config.toml 
[template.plugins.default]\nci = false\n
"},{"location":"config/project-templates/#src-layout","title":"src layout","text":"

See this blog post.

config.toml 
[template.plugins.default]\nsrc-layout = true\n
"},{"location":"config/project-templates/#feature-flags","title":"Feature flags","text":""},{"location":"config/project-templates/#command-line-interface","title":"Command line interface","text":"

The --cli flag adds a CLI backed by Click that can also be invoked with python -m <PKG_NAME>.

"},{"location":"config/static-analysis/","title":"Static analysis configuration","text":"

Static analysis performed by the fmt command is backed entirely by Ruff.

Hatch provides default settings that user configuration can extend.

"},{"location":"config/static-analysis/#extending-config","title":"Extending config","text":"

When defining your configuration, be sure to use options that are prefixed by extend- such as extend-select, for example:

pyproject.toml ruff.toml 
[tool.ruff.format]\npreview = true\nquote-style = \"single\"\n\n[tool.ruff.lint]\npreview = true\nextend-select = [\"C901\"]\n\n[tool.ruff.lint.extend-per-file-ignores]\n\"docs/.hooks/*\" = [\"INP001\", \"T201\"]\n\n[tool.ruff.lint.isort]\nknown-first-party = [\"foo\", \"bar\"]\n
[format]\npreview = true\nquote-style = \"single\"\n\n[lint]\npreview = true\nextend-select = [\"C901\"]\n\n[lint.extend-per-file-ignores]\n\"docs/.hooks/*\" = [\"INP001\", \"T201\"]\n\n[lint.isort]\nknown-first-party = [\"foo\", \"bar\"]\n

Note

When not persisting config, there is no need to explicitly extend the defaults as Hatch automatically handles that.

"},{"location":"config/static-analysis/#persistent-config","title":"Persistent config","text":"

If you want to store the default configuration in the project, set an explicit path like so:

pyproject.toml hatch.toml 
[tool.hatch.envs.hatch-static-analysis]\nconfig-path = \"ruff_defaults.toml\"\n
[envs.hatch-static-analysis]\nconfig-path = \"ruff_defaults.toml\"\n

Then instruct Ruff to consider your configuration as an extension of the default file:

pyproject.toml ruff.toml 
[tool.ruff]\nextend = \"ruff_defaults.toml\"\n
extend = \"ruff_defaults.toml\"\n

Anytime you wish to update the defaults (such as when upgrading Hatch), you must run the fmt command once with the --sync flag e.g.:

hatch fmt --check --sync\n

Tip

This is the recommended approach since it allows other tools like IDEs to use the default configuration.

"},{"location":"config/static-analysis/#versioning","title":"Versioning","text":"

You can pin the particular version of Ruff by explicitly defining the environment dependencies:

pyproject.toml hatch.toml 
[tool.hatch.envs.hatch-static-analysis]\ndependencies = [\"ruff==X.Y.Z\"]\n
[envs.hatch-static-analysis]\ndependencies = [\"ruff==X.Y.Z\"]\n
"},{"location":"config/static-analysis/#default-settings","title":"Default settings","text":""},{"location":"config/static-analysis/#non-rule-settings","title":"Non-rule settings","text":""},{"location":"config/static-analysis/#per-file-ignored-rules","title":"Per-file ignored rules","text":""},{"location":"config/static-analysis/#selected-rules","title":"Selected rules","text":"

The following rules are based on version 0.1.8 of Ruff. Rules with a P are only selected when preview mode is enabled.

"},{"location":"config/environment/advanced/","title":"Advanced environment configuration","text":""},{"location":"config/environment/advanced/#context-formatting","title":"Context formatting","text":"

All environments support the following extra context formatting fields:

Field Description env_name The name of the environment env_type The type of environment matrix Its modifier selects the value of that matrix variable. If the environment is not part of a matrix or was not generated with the variable, you must specify a default value as an additional modifier e.g. {matrix:version:v1.0.0}. verbosity The integer verbosity value of Hatch. A flag modifier is supported that will render the value as a CLI flag e.g. -2 becomes -qq, 1 becomes -v, and 0 becomes an empty string. An additional flag integer modifier may be used to adjust the verbosity level. For example, if you wanted to make a command quiet by default, you could use {verbosity:flag:-1} within the command. args For executed commands only, any extra command line arguments with an optional default modifier if none were provided"},{"location":"config/environment/advanced/#matrix","title":"Matrix","text":"

Environments can define a series of matrices with the matrix option:

pyproject.toml hatch.toml 
[tool.hatch.envs.test]\ndependencies = [\n  \"pytest\"\n]\n\n[[tool.hatch.envs.test.matrix]]\npython = [\"2.7\", \"3.8\"]\nversion = [\"42\", \"3.14\"]\n\n[[tool.hatch.envs.test.matrix]]\npython = [\"3.8\", \"3.9\"]\nversion = [\"9000\"]\nfeature = [\"foo\", \"bar\"]\n
[envs.test]\ndependencies = [\n  \"pytest\"\n]\n\n[[envs.test.matrix]]\npython = [\"2.7\", \"3.8\"]\nversion = [\"42\", \"3.14\"]\n\n[[envs.test.matrix]]\npython = [\"3.8\", \"3.9\"]\nversion = [\"9000\"]\nfeature = [\"foo\", \"bar\"]\n

Doing so will result in the product of each variable combination being its own environment.

"},{"location":"config/environment/advanced/#naming","title":"Naming","text":"

The name of the generated environments will be the variable values of each combination separated by hyphens, altogether prefixed by <ENV_NAME>.. For example, the following configuration:

pyproject.toml hatch.toml 
[[tool.hatch.envs.test.matrix]]\nversion = [\"42\"]\nfeature = [\"foo\", \"bar\"]\n
[[envs.test.matrix]]\nversion = [\"42\"]\nfeature = [\"foo\", \"bar\"]\n

would indicate the following unique environments:

test.42-foo\ntest.42-bar\n

The exceptions to this format are described below.

"},{"location":"config/environment/advanced/#python-variables","title":"Python variables","text":"

If the variables py or python are specified, then they will rank first in the product result and will be prefixed by py if the value is not. For example, the following configuration:

pyproject.toml hatch.toml 
[[tool.hatch.envs.test.matrix]]\nversion = [\"42\"]\npython = [\"3.9\", \"pypy3\"]\n
[[envs.test.matrix]]\nversion = [\"42\"]\npython = [\"3.9\", \"pypy3\"]\n

would generate the following environments:

test.py3.9-42\ntest.pypy3-42\n

Note

The value of this variable sets the Python version.

"},{"location":"config/environment/advanced/#name-formatting","title":"Name formatting","text":"

You can set the matrix-name-format option to modify how each variable part is formatted which recognizes the placeholders {variable} and {value}. For example, the following configuration:

pyproject.toml hatch.toml 
[tool.hatch.envs.test]\nmatrix-name-format = \"{variable}_{value}\"\n\n[[tool.hatch.envs.test.matrix]]\nversion = [\"42\"]\nfeature = [\"foo\", \"bar\"]\n
[envs.test]\nmatrix-name-format = \"{variable}_{value}\"\n\n[[envs.test.matrix]]\nversion = [\"42\"]\nfeature = [\"foo\", \"bar\"]\n

would produce the following environments:

test.version_42-feature_foo\ntest.version_42-feature_bar\n

By default this option is set to {value}.

"},{"location":"config/environment/advanced/#default-environment","title":"Default environment","text":"

If the default environment defines matrices, then the generated names will not be prefixed by the environment name. This can be useful for projects that only need a single series of matrices without any standalone environments.

"},{"location":"config/environment/advanced/#selection","title":"Selection","text":"

Rather than selecting a single generated environment, you can select the root environment to target all of them. For example, if you have the following configuration:

pyproject.toml hatch.toml 
[tool.hatch.envs.test]\ndependencies = [\n  \"coverage[toml]\",\n  \"pytest\",\n  \"pytest-cov\",\n]\n\n[tool.hatch.envs.test.scripts]\ncov = 'pytest --cov-report=term-missing --cov-config=pyproject.toml --cov=pkg --cov=tests'\n\n[[tool.hatch.envs.test.matrix]]\npython = [\"2.7\", \"3.8\"]\nversion = [\"42\", \"3.14\"]\n
[envs.test]\ndependencies = [\n  \"coverage[toml]\",\n  \"pytest\",\n  \"pytest-cov\",\n]\n\n[envs.test.scripts]\ncov = 'pytest --cov-report=term-missing --cov-config=pyproject.toml --cov=pkg --cov=tests'\n\n[[envs.test.matrix]]\npython = [\"2.7\", \"3.8\"]\nversion = [\"42\", \"3.14\"]\n

you could then run your tests consecutively in all 4 environments with:

hatch run test:cov\n
"},{"location":"config/environment/advanced/#option-overrides","title":"Option overrides","text":"

You can modify options based on the conditions of different sources like matrix variables with the overrides table, using dotted key syntax for each declaration:

pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>.overrides]\n<SOURCE>.<CONDITION>.<OPTION> = <VALUE>\n
[envs.<ENV_NAME>.overrides]\n<SOURCE>.<CONDITION>.<OPTION> = <VALUE>\n

The type of the selected option determines the types of values.

"},{"location":"config/environment/advanced/#platform-overrides","title":"Platform overrides","text":"

Options can be modified based on the current platform using the platform source.

pyproject.toml hatch.toml 
[tool.hatch.envs.test.overrides]\nplatform.windows.scripts = [\n  'run=pytest -m \"not io_uring\"',\n]\n
[envs.test.overrides]\nplatform.windows.scripts = [\n  'run=pytest -m \"not io_uring\"',\n]\n

The following platforms are supported:

"},{"location":"config/environment/advanced/#environment-variable-overrides","title":"Environment variable overrides","text":"

Environment variables can modify options using the env source.

pyproject.toml hatch.toml 
[tool.hatch.envs.test.overrides]\nenv.GITHUB_ACTIONS.dev-mode = { value = false, if = [\"true\"] }\n
[envs.test.overrides]\nenv.GITHUB_ACTIONS.dev-mode = { value = false, if = [\"true\"] }\n
"},{"location":"config/environment/advanced/#matrix-variable-overrides","title":"Matrix variable overrides","text":"

The matrix variables used to generate each environment can be used to modify options within using the matrix source.

pyproject.toml hatch.toml 
[tool.hatch.envs.test.overrides]\nmatrix.version.env-vars = \"PRODUCT_VERSION\"\nmatrix.auth.features = [\n  { value = \"oauth\", if = [\"oauth2\"] },\n  { value = \"kerberos\", if = [\"kerberos\"] },\n]\n\n[[tool.hatch.envs.test.matrix]]\npython = [\"2.7\", \"3.8\"]\nversion = [\"legacy\", \"latest\"]\nauth = [\"oauth2\", \"kerberos\", \"noauth\"]\n
[envs.test.overrides]\nmatrix.version.env-vars = \"PRODUCT_VERSION\"\nmatrix.auth.features = [\n  { value = \"oauth\", if = [\"oauth2\"] },\n  { value = \"kerberos\", if = [\"kerberos\"] },\n]\n\n[[envs.test.matrix]]\npython = [\"2.7\", \"3.8\"]\nversion = [\"legacy\", \"latest\"]\nauth = [\"oauth2\", \"kerberos\", \"noauth\"]\n
"},{"location":"config/environment/advanced/#name-overrides","title":"Name overrides","text":"

When a matrix is defined, the name source can be used for regular expression matching on the generated name, minus the prefix for non-default environments.

pyproject.toml hatch.toml 
[tool.hatch.envs.test.overrides]\nname.\"^0\".env-vars = \"TESTING_UNSTABLE=true\"\n\n[[tool.hatch.envs.test.matrix]]\nversion = [\"0.1.0\", \"0.2.0\", \"1.0.0\"]\n
[envs.test.overrides]\nname.\"^0\".env-vars = \"TESTING_UNSTABLE=true\"\n\n[[envs.test.matrix]]\nversion = [\"0.1.0\", \"0.2.0\", \"1.0.0\"]\n
"},{"location":"config/environment/advanced/#types","title":"Types","text":""},{"location":"config/environment/advanced/#overwriting","title":"Overwriting","text":"

Rather than supplementing the values within mapping types or array types, you can overwrite the option as a whole by prefixing the name with set-:

pyproject.toml hatch.toml 
[tool.hatch.envs.test.overrides]\nmatrix.foo.set-platforms = [\"macos\", \"linux\"]\n
[envs.test.overrides]\nmatrix.foo.set-platforms = [\"macos\", \"linux\"]\n

When overwriting entire options or keys within mappings, override sources are applied in the following order:

  1. platform
  2. environment variables
  3. matrix variables
  4. names
"},{"location":"config/environment/advanced/#conditions","title":"Conditions","text":"

You may specify certain extra keys for any inline table that will determine whether or not to apply that entry. These modifiers may be combined with others and any negative evaluation will immediately cause the entry to be skipped.

"},{"location":"config/environment/advanced/#allowed-values","title":"Allowed values","text":"

The if key represents the allowed values for that condition. If the value of the condition is not listed, then that entry will not be applied:

pyproject.toml hatch.toml 
[tool.hatch.envs.test.overrides]\nmatrix.version.python = { value = \"pypy\", if = [\"3.14\"] }\nmatrix.version.env-vars = [\n  { key = \"KEY1\", value = \"VALUE1\", if = [\"42\"] },\n  { key = \"KEY2\", value = \"VALUE2\", if = [\"3.14\"] },\n]\n\n[[tool.hatch.envs.test.matrix]]\nversion = [\"42\", \"3.14\"]\n
[envs.test.overrides]\nmatrix.version.python = { value = \"pypy\", if = [\"3.14\"] }\nmatrix.version.env-vars = [\n  { key = \"KEY1\", value = \"VALUE1\", if = [\"42\"] },\n  { key = \"KEY2\", value = \"VALUE2\", if = [\"3.14\"] },\n]\n\n[[envs.test.matrix]]\nversion = [\"42\", \"3.14\"]\n
"},{"location":"config/environment/advanced/#specific-platforms","title":"Specific platforms","text":"

The platform key represents the desired platforms. If the current platform is not listed, then that entry will not be applied:

pyproject.toml hatch.toml 
[tool.hatch.envs.test.overrides]\nenv.EXPERIMENTAL.python = { value = \"pypy\", if = [\"1\"], platform = [\"macos\"] }\nmatrix.version.env-vars = [\n  { key = \"KEY1\", value = \"VALUE1\", if = [\"42\"], platform = [\"linux\"] },\n  { key = \"KEY2\", value = \"VALUE2\", if = [\"3.14\"] },\n]\n\n[[tool.hatch.envs.test.matrix]]\nversion = [\"42\", \"3.14\"]\n
[envs.test.overrides]\nenv.EXPERIMENTAL.python = { value = \"pypy\", if = [\"1\"], platform = [\"macos\"] }\nmatrix.version.env-vars = [\n  { key = \"KEY1\", value = \"VALUE1\", if = [\"42\"], platform = [\"linux\"] },\n  { key = \"KEY2\", value = \"VALUE2\", if = [\"3.14\"] },\n]\n\n[[envs.test.matrix]]\nversion = [\"42\", \"3.14\"]\n
"},{"location":"config/environment/advanced/#required-environment-variables","title":"Required environment variables","text":"

The env key represents the required environment variables. If any of the listed environment variables are not set or the defined value does not match, then that entry will not be applied:

pyproject.toml hatch.toml 
[tool.hatch.envs.test.overrides]\nplatform.windows.python = { value = \"pypy\", env = [\"EXPERIMENTAL\"] }\nmatrix.version.env-vars = [\n  { key = \"KEY1\", value = \"VALUE1\", if = [\"42\"], env = [\"FOO\", \"BAR=BAZ\"] },\n  { key = \"KEY2\", value = \"VALUE2\", if = [\"3.14\"] },\n]\n\n[[tool.hatch.envs.test.matrix]]\nversion = [\"42\", \"3.14\"]\n
[envs.test.overrides]\nplatform.windows.python = { value = \"pypy\", env = [\"EXPERIMENTAL\"] }\nmatrix.version.env-vars = [\n  { key = \"KEY1\", value = \"VALUE1\", if = [\"42\"], env = [\"FOO\", \"BAR=BAZ\"] },\n  { key = \"KEY2\", value = \"VALUE2\", if = [\"3.14\"] },\n]\n\n[[envs.test.matrix]]\nversion = [\"42\", \"3.14\"]\n
"},{"location":"config/environment/overview/","title":"Environment configuration","text":"

All environments are defined as sections within the tool.hatch.envs table.

pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\n
[envs.<ENV_NAME>]\n

The storage location for environments is completely configurable.

Unless an environment is explicitly selected on the command line, the default environment will be used. The type of this environment defaults to virtual.

Info

Environments prefixed by hatch- are used for special purposes e.g. static analysis.

"},{"location":"config/environment/overview/#inheritance","title":"Inheritance","text":"

All environments inherit from the environment defined by its template option, which defaults to default.

So for the following configuration:

pyproject.toml hatch.toml 
[tool.hatch.envs.foo]\ntype = \"baz\"\nskip-install = true\n\n[tool.hatch.envs.bar]\ntemplate = \"foo\"\nskip-install = false\n
[envs.foo]\ntype = \"baz\"\nskip-install = true\n\n[envs.bar]\ntemplate = \"foo\"\nskip-install = false\n

the environment bar will be of type baz with skip-install set to false.

Note

Environments do not inherit matrices.

"},{"location":"config/environment/overview/#self-referential-environments","title":"Self-referential environments","text":"

You can disable inheritance by setting template to the environment's own name:

pyproject.toml hatch.toml 
[tool.hatch.envs.foo]\ntemplate = \"foo\"\n
[envs.foo]\ntemplate = \"foo\"\n
"},{"location":"config/environment/overview/#detached-environments","title":"Detached environments","text":"

A common use case is standalone environments that do not require inheritance nor the installation of the project, such as for linting or sometimes building documentation. Enabling the detached option will make the environment self-referential and will skip project installation:

pyproject.toml hatch.toml 
[tool.hatch.envs.lint]\ndetached = true\n
[envs.lint]\ndetached = true\n
"},{"location":"config/environment/overview/#dependencies","title":"Dependencies","text":"

You can install dependencies in addition to the ones defined by your project's metadata. Entries support context formatting.

pyproject.toml hatch.toml 
[tool.hatch.envs.test]\ndependencies = [\n  \"coverage[toml]\",\n  \"pytest\",\n  \"pytest-cov\",\n  \"pytest-mock\",\n]\n
[envs.test]\ndependencies = [\n  \"coverage[toml]\",\n  \"pytest\",\n  \"pytest-cov\",\n  \"pytest-mock\",\n]\n

If you define environments with dependencies that only slightly differ from their inherited environments, you can use the extra-dependencies option to avoid redeclaring the dependencies option:

pyproject.toml hatch.toml 
[tool.hatch.envs.default]\ndependencies = [\n  \"foo\",\n  \"bar\",\n]\n\n[tool.hatch.envs.experimental]\nextra-dependencies = [\n  \"baz\",\n]\n
[envs.default]\ndependencies = [\n  \"foo\",\n  \"bar\",\n]\n\n[envs.experimental]\nextra-dependencies = [\n  \"baz\",\n]\n

Tip

Hatch uses pip to install dependencies so any configuration it supports Hatch does as well. For example, if you wanted to only use a private repository you could set the PIP_INDEX_URL environment variable.

"},{"location":"config/environment/overview/#installation","title":"Installation","text":""},{"location":"config/environment/overview/#features","title":"Features (extras)","text":"

If your project defines optional dependencies, you can select which groups to install using the features option:

pyproject.toml hatch.toml 
[tool.hatch.envs.nightly]\nfeatures = [\n  \"server\",\n  \"grpc\",\n]\n
[envs.nightly]\nfeatures = [\n  \"server\",\n  \"grpc\",\n]\n

Note

Features/optional dependencies are also known as extras in other tools.

"},{"location":"config/environment/overview/#dev-mode","title":"Dev mode","text":"

By default, environments will always reflect the current state of your project on disk. Set dev-mode to false to disable this behavior:

pyproject.toml hatch.toml 
[tool.hatch.envs.static]\ndev-mode = false\n
[envs.static]\ndev-mode = false\n
"},{"location":"config/environment/overview/#skip-install","title":"Skip install","text":"

By default, environments will install your project during creation. To ignore this step, set skip-install to true:

pyproject.toml hatch.toml 
[tool.hatch.envs.lint]\nskip-install = true\n
[envs.lint]\nskip-install = true\n
"},{"location":"config/environment/overview/#environment-variables","title":"Environment variables","text":""},{"location":"config/environment/overview/#defined","title":"Defined","text":"

You can define environment variables with the env-vars option:

pyproject.toml hatch.toml 
[tool.hatch.envs.docs]\ndependencies = [\n  \"mkdocs\"\n]\n[tool.hatch.envs.docs.env-vars]\nSOURCE_DATE_EPOCH = \"1580601600\"\n
[envs.docs]\ndependencies = [\n  \"mkdocs\"\n]\n[envs.docs.env-vars]\nSOURCE_DATE_EPOCH = \"1580601600\"\n

Values support context formatting.

"},{"location":"config/environment/overview/#filters","title":"Filters","text":"

By default, environments will have access to all environment variables. You can filter with wildcard patterns using the env-include/env-exclude options:

pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\nenv-include = [\n  \"FOO*\",\n]\nenv-exclude = [\n  \"BAR\",\n]\n
[envs.<ENV_NAME>]\nenv-include = [\n  \"FOO*\",\n]\nenv-exclude = [\n  \"BAR\",\n]\n

Exclusion patterns take precedence but will never affect defined environment variables.

"},{"location":"config/environment/overview/#scripts","title":"Scripts","text":"

You can define named scripts that may be executed or referenced at the beginning of other scripts. Context formatting is supported.

For example, in the following configuration:

pyproject.toml hatch.toml 
[tool.hatch.envs.test]\ndependencies = [\n  \"coverage[toml]\",\n  \"pytest\",\n  \"pytest-cov\",\n  \"pytest-mock\",\n]\n[tool.hatch.envs.test.scripts]\nrun-coverage = \"pytest --cov-config=pyproject.toml --cov=pkg --cov=tests\"\nrun = \"run-coverage --no-cov\"\n
[envs.test]\ndependencies = [\n  \"coverage[toml]\",\n  \"pytest\",\n  \"pytest-cov\",\n  \"pytest-mock\",\n]\n[envs.test.scripts]\nrun-coverage = \"pytest --cov-config=pyproject.toml --cov=pkg --cov=tests\"\nrun = \"run-coverage --no-cov\"\n

the run script would be expanded to:

pytest --cov-config=pyproject.toml --cov=pkg --cov=tests --no-cov\n

Scripts can also be defined as an array of strings.

pyproject.toml hatch.toml 
[tool.hatch.envs.style]\ndetached = true\ndependencies = [\n  \"flake8\",\n  \"black\",\n  \"isort\",\n]\n[tool.hatch.envs.style.scripts]\ncheck = [\n  \"flake8 .\",\n  \"black --check --diff .\",\n  \"isort --check-only --diff .\",\n]\nfmt = [\n  \"isort .\",\n  \"black .\",\n  \"check\",\n]\n
[envs.style]\ndetached = true\ndependencies = [\n  \"flake8\",\n  \"black\",\n  \"isort\",\n]\n[envs.style.scripts]\ncheck = [\n  \"flake8 .\",\n  \"black --check --diff .\",\n  \"isort --check-only --diff .\",\n]\nfmt = [\n  \"isort .\",\n  \"black .\",\n  \"check\",\n]\n

Similar to make, you can ignore the exit code of commands that start with - (a hyphen). For example, the script error defined by the following configuration would halt after the second command with 3 as the exit code:

pyproject.toml hatch.toml 
[tool.hatch.envs.test.scripts]\nerror = [\n  \"- exit 1\",\n  \"exit 3\",\n  \"exit 0\",\n]\n
[envs.test.scripts]\nerror = [\n  \"- exit 1\",\n  \"exit 3\",\n  \"exit 0\",\n]\n

Tip

Individual scripts inherit from parent environments just like options.

"},{"location":"config/environment/overview/#commands","title":"Commands","text":"

All commands are able to use any defined scripts. Also like scripts, context formatting is supported and the exit code of commands that start with a hyphen will be ignored.

"},{"location":"config/environment/overview/#pre-install","title":"Pre-install","text":"

You can run commands immediately before environments install your project.

pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\npre-install-commands = [\n  \"...\",\n]\n
[envs.<ENV_NAME>]\npre-install-commands = [\n  \"...\",\n]\n
"},{"location":"config/environment/overview/#post-install","title":"Post-install","text":"

You can run commands immediately after environments install your project.

pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\npost-install-commands = [\n  \"...\",\n]\n
[envs.<ENV_NAME>]\npost-install-commands = [\n  \"...\",\n]\n
"},{"location":"config/environment/overview/#python-version","title":"Python version","text":"

The python option specifies which version of Python to use, or an absolute path to a Python interpreter:

pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\npython = \"3.10\"\n
[envs.<ENV_NAME>]\npython = \"3.10\"\n

All environment types should respect this option.

"},{"location":"config/environment/overview/#supported-platforms","title":"Supported platforms","text":"

The platforms option indicates the operating systems with which the environment is compatible:

pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\nplatforms = [\"linux\", \"windows\", \"macos\"]\n
[envs.<ENV_NAME>]\nplatforms = [\"linux\", \"windows\", \"macos\"]\n

The following platforms are supported:

If unspecified, the environment is assumed to be compatible with all platforms.

"},{"location":"config/environment/overview/#description","title":"Description","text":"

The description option is purely informational and is displayed in the output of the env show command:

pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\ndescription = \"\"\"\nLorem ipsum ...\n\"\"\"\n
[envs.<ENV_NAME>]\ndescription = \"\"\"\nLorem ipsum ...\n\"\"\"\n
"},{"location":"config/environment/overview/#type","title":"Type","text":"

An environment's type determines which environment plugin will be used for management. The only built-in environment type is virtual, which uses virtual Python environments.

"},{"location":"history/hatch/","title":"Hatch history","text":"

All notable changes to Hatch will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

"},{"location":"history/hatch/#unreleased","title":"Unreleased","text":""},{"location":"history/hatch/#hatch-v1.9.6","title":"1.9.6 - 2024-04-24","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.9.4","title":"1.9.4 - 2024-03-12","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.9.3","title":"1.9.3 - 2024-01-25","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.9.2","title":"1.9.2 - 2024-01-21","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.9.1","title":"1.9.1 - 2023-12-25","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.9.0","title":"1.9.0 - 2023-12-19","text":"

Changed:

Added:

Fixed:

"},{"location":"history/hatch/#hatch-v1.8.1","title":"1.8.1 - 2023-12-14","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.8.0","title":"1.8.0 - 2023-12-11","text":"

Changed:

Added:

Fixed:

"},{"location":"history/hatch/#hatch-v1.7.0","title":"1.7.0 - 2023-04-03","text":"

Changed:

Added:

Fixed:

"},{"location":"history/hatch/#hatch-v1.6.3","title":"1.6.3 - 2022-10-24","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.6.2","title":"1.6.2 - 2022-10-20","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.6.1","title":"1.6.1 - 2022-10-16","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.6.0","title":"1.6.0 - 2022-10-08","text":"

Changed:

Added:

Fixed:

"},{"location":"history/hatch/#hatch-v1.5.0","title":"1.5.0 - 2022-08-28","text":"

Added:

Fixed:

"},{"location":"history/hatch/#hatch-v1.4.2","title":"1.4.2 - 2022-08-16","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.4.1","title":"1.4.1 - 2022-08-13","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.4.0","title":"1.4.0 - 2022-08-06","text":"

Added:

Fixed:

"},{"location":"history/hatch/#hatch-v1.3.1","title":"1.3.1 - 2022-07-11","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.3.0","title":"1.3.0 - 2022-07-10","text":"

Changed:

Added:

Fixed:

"},{"location":"history/hatch/#hatch-v1.2.1","title":"1.2.1 - 2022-05-30","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.2.0","title":"1.2.0 - 2022-05-22","text":"

Changed:

Added:

Fixed:

"},{"location":"history/hatch/#hatch-v1.1.2","title":"1.1.2 - 2022-05-20","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.1.1","title":"1.1.1 - 2022-05-12","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.1.0","title":"1.1.0 - 2022-05-12","text":"

Changed:

Added:

"},{"location":"history/hatch/#hatch-v1.0.0","title":"1.0.0 - 2022-04-28","text":"

This is the first stable release of Hatch v1, a complete rewrite. Enjoy!

"},{"location":"history/hatchling/","title":"Hatchling history","text":"

All notable changes to Hatchling will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

"},{"location":"history/hatchling/#unreleased","title":"Unreleased","text":""},{"location":"history/hatchling/#hatchling-v1.21.0","title":"1.21.0 - 2023-12-18","text":"

Added:

"},{"location":"history/hatchling/#hatchling-v1.20.0","title":"1.20.0 - 2023-12-13","text":"

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.19.1","title":"1.19.1 - 2023-12-12","text":"

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.19.0","title":"1.19.0 - 2023-12-11","text":"

Changed:

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.18.0","title":"1.18.0 - 2023-06-12","text":"

Changed:

Added:

"},{"location":"history/hatchling/#hatchling-v1.17.1","title":"1.17.1 - 2023-06-03","text":"

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.17.0","title":"1.17.0 - 2023-05-12","text":"

Added:

"},{"location":"history/hatchling/#hatchling-v1.16.1","title":"1.16.1 - 2023-05-11","text":"

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.16.0","title":"1.16.0 - 2023-05-11","text":"

Added:

"},{"location":"history/hatchling/#hatchling-v1.15.0","title":"1.15.0 - 2023-05-09","text":"

Added:

"},{"location":"history/hatchling/#hatchling-v1.14.1","title":"1.14.1 - 2023-04-23","text":"

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.14.0","title":"1.14.0 - 2023-04-02","text":"

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.13.0","title":"1.13.0 - 2023-02-09","text":"

Added:

"},{"location":"history/hatchling/#hatchling-v1.12.2","title":"1.12.2 - 2023-01-05","text":"

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.12.1","title":"1.12.1 - 2022-12-31","text":"

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.12.0","title":"1.12.0 - 2022-12-30","text":"

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.11.1","title":"1.11.1 - 2022-10-19","text":"

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.11.0","title":"1.11.0 - 2022-10-08","text":"

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.10.0","title":"1.10.0 - 2022-09-18","text":"

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.9.0","title":"1.9.0 - 2022-09-09","text":"

Changed:

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.8.1","title":"1.8.1 - 2022-08-25","text":"

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.8.0","title":"1.8.0 - 2022-08-16","text":"

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.7.1","title":"1.7.1 - 2022-08-13","text":"

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.7.0","title":"1.7.0 - 2022-08-12","text":"

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.6.0","title":"1.6.0 - 2022-07-23","text":"

Changed:

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.5.0","title":"1.5.0 - 2022-07-11","text":"

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.4.1","title":"1.4.1 - 2022-07-04","text":"

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.4.0","title":"1.4.0 - 2022-07-03","text":"

Changed:

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.3.1","title":"1.3.1 - 2022-05-30","text":"

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.3.0","title":"1.3.0 - 2022-05-22","text":"

Removed:

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.2.0","title":"1.2.0 - 2022-05-20","text":"

Added:

"},{"location":"history/hatchling/#hatchling-v1.1.0","title":"1.1.0 - 2022-05-19","text":"

Added:

"},{"location":"history/hatchling/#hatchling-v1.0.0","title":"1.0.0 - 2022-05-17","text":"

Changed:

Added:

"},{"location":"history/hatchling/#hatchling-v0.25.1","title":"0.25.1 - 2022-06-14","text":"

Fixed:

"},{"location":"history/hatchling/#hatchling-v0.25.0","title":"0.25.0 - 2022-05-15","text":"

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v0.24.0","title":"0.24.0 - 2022-04-28","text":"

This is the initial public release of the Hatchling build system. Support for Python 2 will be dropped in version 1.

"},{"location":"how-to/environment/package-indices/","title":"Package indices","text":"

Most Hatch environment types, like the default virtual, simply use pip to install dependencies. Therefore, you can use the standard environment variables that influence pip's behavior to choose where to search for packages.

Here's an example of setting up the default environment to look at 2 private indices (using context formatting for authentication) before finally falling back to PyPI:

pyproject.toml hatch.toml 
[tool.hatch.envs.default.env-vars]\nPIP_INDEX_URL = \"https://token:{env:GITLAB_API_TOKEN}@gitlab.com/api/v4/groups/<group1_path>/-/packages/pypi/simple/\"\nPIP_EXTRA_INDEX_URL = \"https://token:{env:GITLAB_API_TOKEN}@gitlab.com/api/v4/groups/<group2_path>/-/packages/pypi/simple/ https://pypi.org/simple/\"\n
[envs.default.env-vars]\nPIP_INDEX_URL = \"https://token:{env:GITLAB_API_TOKEN}@gitlab.com/api/v4/groups/<group1_path>/-/packages/pypi/simple/\"\nPIP_EXTRA_INDEX_URL = \"https://token:{env:GITLAB_API_TOKEN}@gitlab.com/api/v4/groups/<group2_path>/-/packages/pypi/simple/ https://pypi.org/simple/\"\n
"},{"location":"how-to/plugins/testing-builds/","title":"Testing builds","text":"

For testing Hatchling plugins, you'll usually want to generate a project to execute builds as a real user would. For example, as a minimal pytest fixture:

from pathlib import Path\n\nimport pytest\n\n\n@pytest.fixture\ndef new_project(tmp_path):\n    project_dir = tmp_path / 'my-app'\n    project_dir.mkdir()\n\n    project_file = project_dir / 'pyproject.toml'\n    project_file.write_text(\n        f\"\"\"\\\n[build-system]\nrequires = [\"hatchling\", \"hatch-plugin-name @ {Path.cwd().as_uri()}\"]\nbuild-backend = \"hatchling.build\"\n\n[project]\nname = \"my-app\"\nversion = \"0.1.0\"\n\"\"\",\n        encoding='utf-8',\n    )\n    ...\n

The issue with this is that after the first test session, the project will be forever cached by pip based on the file path. Therefore, subsequent tests runs will never use updated code.

To invalidate the cache, copy your code to a new path for every test session:

import shutil\nfrom pathlib import Path\nfrom tempfile import TemporaryDirectory\n\nimport pytest\n\n\n@pytest.fixture(scope='session')\ndef plugin_dir():\n    with TemporaryDirectory() as d:\n        directory = Path(d, 'plugin')\n        shutil.copytree(\n            Path.cwd(), directory, ignore=shutil.ignore_patterns('.git')\n        )\n\n        yield directory.resolve()\n\n\n@pytest.fixture\ndef new_project(tmp_path, plugin_dir):\n    project_dir = tmp_path / 'my-app'\n    project_dir.mkdir()\n\n    project_file = project_dir / 'pyproject.toml'\n    project_file.write_text(\n        f\"\"\"\\\n[build-system]\nrequires = [\"hatchling\", \"hatch-plugin-name @ {plugin_dir.as_uri()}\"]\nbuild-backend = \"hatchling.build\"\n\n[project]\nname = \"my-app\"\nversion = \"0.1.0\"\n\"\"\",\n        encoding='utf-8',\n    )\n    ...\n

Note

This example chooses to ignore copying .git for performance reasons. You may want to ignore more patterns, or copy only specific paths like this plugin does.

"},{"location":"meta/authors/","title":"Authors","text":""},{"location":"meta/authors/#maintainers","title":"Maintainers","text":""},{"location":"meta/authors/#contributors","title":"Contributors","text":""},{"location":"meta/faq/","title":"FAQ","text":""},{"location":"meta/faq/#interoperability","title":"Interoperability","text":"

Q: What is the risk of lock-in?

A: Not much! Other than the plugin system, everything uses Python's established standards by default. Project metadata is based entirely on the standard, the build system is compatible with PEP 517/PEP 660, versioning uses the scheme specified by PEP 440, dependencies are defined with PEP 508 strings, and environments use virtualenv.

Q: Must one use all features?

A: No, all features are optional! You can use just the build system, publish wheels and source distributions that were built by other tools, only use the environment management, etc.

"},{"location":"meta/faq/#libraries-vs-applications","title":"Libraries vs applications","text":"

Q: Are workflows for both libraries and applications supported?

A: Yes, mostly! Applications can utilize environment management just like libraries, and plugins can be used to build projects in arbitrary formats or publish artifacts to arbitrary destinations.

The only caveat is that currently there is no support for re-creating an environment given a set of dependencies in a reproducible manner. Although a standard lock file format may be far off since [PEP 665][] was rejected, resolving capabilities are coming to pip. When that is stabilized, Hatch will add locking functionality and dedicated documentation for managing applications.

"},{"location":"meta/faq/#tool-migration","title":"Tool migration","text":"

Q: How to migrate to Hatch?

"},{"location":"meta/faq/#build-system","title":"Build system","text":"SetuptoolsHatch setup.py MANIFEST.in 
import os\nfrom io import open\n\nfrom setuptools import find_packages, setup\n\nabout = {}\nwith open(os.path.join('src', 'foo', '__about__.py'), 'r', 'utf-8') as f:\n    exec(f.read(), about)\n\nwith open('README.md', 'r', 'utf-8') as f:\n    readme = f.read()\n\nsetup(\n    # Metadata\n    name='foo',\n    version=about['__version__'],\n    description='...',\n    long_description=readme,\n    long_description_content_type='text/markdown',\n    author='...',\n    author_email='...',\n    project_urls={\n        'Documentation': '...',\n        'Source': '...',\n    },\n    classifiers=[\n        '...',\n    ],\n    keywords=[\n        '...',\n    ],\n    python_requires='>=3.8',\n    install_requires=[\n        '...',\n    ],\n    extras_require={\n        'feature': ['...'],\n    },\n\n    # Packaging\n    packages=find_packages(where='src'),\n    package_dir={'': 'src'},\n    package_data={\n        'foo': ['py.typed'],\n    },\n    zip_safe=False,\n    entry_points={\n        'console_scripts': [\n            'foo = foo.cli:main',\n        ],\n    },\n)\n
graft tests\n\nglobal-exclude *.py[cod] __pycache__\n
pyproject.toml 
[build-system]\nrequires = [\"hatchling\"]\nbuild-backend = \"hatchling.build\"\n\n[project]\nname = \"foo\"\ndescription = \"...\"\nreadme = \"README.md\"\nauthors = [\n  { name = \"...\", email = \"...\" },\n]\nclassifiers = [\n  \"...\",\n]\nkeywords = [\n  \"...\",\n]\nrequires-python = \">=3.8\"\ndependencies = [\n  \"...\",\n]\ndynamic = [\"version\"]\n\n[project.urls]\nDocumentation = \"...\"\nSource = \"...\"\n\n[project.optional-dependencies]\nfeature = [\"...\"]\n\n[project.scripts]\nfoo = \"foo.cli:main\"\n\n[tool.hatch.version]\npath = \"src/foo/__about__.py\"\n\n[tool.hatch.build.targets.sdist]\ninclude = [\n  \"/src\",\n  \"/tests\",\n]\n
"},{"location":"meta/faq/#environments","title":"Environments","text":"ToxHatch

Invocation:

tox\n
tox.ini 
[tox]\nenvlist =\n    py{27,38}-{42,3.14}\n    py{38,39}-{9000}-{foo,bar}\n\n[testenv]\nusedevelop = true\ndeps =\n    coverage[toml]\n    pytest\n    pytest-cov\n    foo: cryptography\ncommands =\n    pytest --cov-report=term-missing --cov-config=pyproject.toml --cov=pkg --cov=tests {posargs}\nsetenv =\n    3.14: PRODUCT_VERSION=3.14\n    42: PRODUCT_VERSION=42\n    9000: PRODUCT_VERSION=9000\n    {foo,bar}: EXPERIMENTAL=true\n

Invocation:

hatch run test\n
pyproject.toml hatch.toml 
[tool.hatch.envs.default]\ndependencies = [\n  \"coverage[toml]\",\n  \"pytest\",\n  \"pytest-cov\",\n]\n\n[tool.hatch.envs.default.scripts]\ntest = 'pytest --cov-report=term-missing --cov-config=pyproject.toml --cov=pkg --cov=tests'\n\n[tool.hatch.envs.default.overrides]\nmatrix.version.env-vars = \"PRODUCT_VERSION\"\nmatrix.features.env-vars = \"EXPERIMENTAL=true\"\nmatrix.features.dependencies = [\n  { value = \"cryptography\", if = [\"foo\"] },\n]\n\n[[tool.hatch.envs.default.matrix]]\npython = [\"2.7\", \"3.8\"]\nversion = [\"42\", \"3.14\"]\n\n[[tool.hatch.envs.default.matrix]]\npython = [\"3.8\", \"3.9\"]\nversion = [\"9000\"]\nfeatures = [\"foo\", \"bar\"]\n
[envs.default]\ndependencies = [\n  \"coverage[toml]\",\n  \"pytest\",\n  \"pytest-cov\",\n]\n\n[envs.default.scripts]\ntest = 'pytest --cov-report=term-missing --cov-config=pyproject.toml --cov=pkg --cov=tests'\n\n[envs.default.overrides]\nmatrix.version.env-vars = \"PRODUCT_VERSION\"\nmatrix.features.env-vars = \"EXPERIMENTAL=true\"\nmatrix.features.dependencies = [\n  { value = \"cryptography\", if = [\"foo\"] },\n]\n\n[[envs.default.matrix]]\npython = [\"2.7\", \"3.8\"]\nversion = [\"42\", \"3.14\"]\n\n[[envs.default.matrix]]\npython = [\"3.8\", \"3.9\"]\nversion = [\"9000\"]\nfeatures = [\"foo\", \"bar\"]\n
"},{"location":"meta/faq/#fast-cli","title":"Fast CLI?","text":"

The claim about being faster than other tools is based on timings that are always checked in CI.

Hatch achieves this by using lazy imports, lazily performing computation manually and with functools.cached_property, using hacks like not not ... instead of bool(...), etc.

"},{"location":"plugins/about/","title":"Plugins","text":"

Hatch utilizes pluggy for its plugin functionality.

"},{"location":"plugins/about/#overview","title":"Overview","text":"

All plugins provide registration hooks that return one or more classes that inherit from a particular type interface.

Each registration hook must be decorated by Hatch's hook marker. For example, if you wanted to create a new kind of environment you could do:

hooks.py 
from hatchling.plugin import hookimpl\n\nfrom .plugin import SpecialEnvironment\n\n\n@hookimpl\ndef hatch_register_environment():\n    return SpecialEnvironment\n

The hooks can return a single class or a list of classes.

Every class must define an attribute called PLUGIN_NAME that users will select when they wish to use the plugin. So in the example above, the class might be defined like:

plugin.py 
...\nclass SpecialEnvironment(...):\n    PLUGIN_NAME = 'special'\n    ...\n
"},{"location":"plugins/about/#project-configuration","title":"Project configuration","text":""},{"location":"plugins/about/#naming","title":"Naming","text":"

It is recommended that plugin project names are prefixed with hatch-. For example, if you wanted to make a plugin that provides some functionality for a product named foo you might do:

pyproject.toml 
[project]\nname = \"hatch-foo\"\n
"},{"location":"plugins/about/#discovery","title":"Discovery","text":"

You'll need to define your project as a Python plugin for Hatch:

pyproject.toml 
[project.entry-points.hatch]\nfoo = \"pkg.hooks\"\n

The name of the plugin should be the project name (excluding any hatch- prefix) and the path should represent the module that contains the registration hooks.

"},{"location":"plugins/about/#classifier","title":"Classifier","text":"

Add Framework :: Hatch to your project's classifiers to make it easy to search for Hatch plugins:

pyproject.toml 
[project]\nclassifiers = [\n  ...\n  \"Framework :: Hatch\",\n  ...\n]\n
"},{"location":"plugins/about/#types","title":"Types","text":""},{"location":"plugins/about/#hatchling","title":"Hatchling","text":"

These are all involved in building projects and therefore any defined dependencies are automatically installed in each build environment.

"},{"location":"plugins/about/#hatch","title":"Hatch","text":"

These must be installed in the same environment as Hatch itself.

"},{"location":"plugins/utilities/","title":"Plugin utilities","text":""},{"location":"plugins/utilities/#hatchling.builders.utils.get_reproducible_timestamp","title":"hatchling.builders.utils.get_reproducible_timestamp() -> int","text":"

Returns an int derived from the SOURCE_DATE_EPOCH environment variable; see https://reproducible-builds.org/specs/source-date-epoch/.

The default value will always be: 1580601600

Source code in backend/src/hatchling/builders/utils.py 
def get_reproducible_timestamp() -> int:\n    \"\"\"\n    Returns an `int` derived from the `SOURCE_DATE_EPOCH` environment variable; see\n    https://reproducible-builds.org/specs/source-date-epoch/.\n\n    The default value will always be: `1580601600`\n    \"\"\"\n    return int(os.environ.get('SOURCE_DATE_EPOCH', '1580601600'))\n
"},{"location":"plugins/utilities/#hatchling.builders.config.BuilderConfig","title":"BuilderConfig","text":""},{"location":"plugins/utilities/#hatchling.builders.config.BuilderConfig.directory","title":"directory: str property","text":""},{"location":"plugins/utilities/#hatchling.builders.config.BuilderConfig.ignore_vcs","title":"ignore_vcs: bool property","text":""},{"location":"plugins/utilities/#hatchling.builders.config.BuilderConfig.reproducible","title":"reproducible: bool property","text":"

Whether or not the target should be built in a reproducible manner, defaulting to true.

"},{"location":"plugins/utilities/#hatchling.builders.config.BuilderConfig.dev_mode_dirs","title":"dev_mode_dirs: list[str] property","text":"

Directories which must be added to Python's search path in dev mode.

"},{"location":"plugins/utilities/#hatchling.builders.config.BuilderConfig.versions","title":"versions: list[str] property","text":""},{"location":"plugins/utilities/#hatchling.builders.config.BuilderConfig.dependencies","title":"dependencies: list[str] property","text":""},{"location":"plugins/utilities/#hatchling.builders.config.BuilderConfig.default_include","title":"default_include() -> list","text":""},{"location":"plugins/utilities/#hatchling.builders.config.BuilderConfig.default_exclude","title":"default_exclude() -> list","text":""},{"location":"plugins/utilities/#hatchling.builders.config.BuilderConfig.default_packages","title":"default_packages() -> list","text":""},{"location":"plugins/utilities/#hatchling.builders.config.BuilderConfig.default_only_include","title":"default_only_include() -> list","text":""},{"location":"plugins/utilities/#hatchling.bridge.app.Application","title":"Application","text":"

The way output is displayed can be configured by users.

Important

Never import this directly; Hatch judiciously decides if a type of plugin requires the capabilities herein and will grant access via an attribute.

"},{"location":"plugins/utilities/#hatchling.bridge.app.Application.verbosity","title":"verbosity: int property","text":"

The verbosity level of the application, with 0 as the default.

"},{"location":"plugins/utilities/#hatchling.bridge.app.Application.abort","title":"abort(message: str = '', code: int = 1, **kwargs: Any) -> None","text":"

Terminate the program with the given return code.

"},{"location":"plugins/utilities/#hatchling.bridge.app.Application.display_debug","title":"display_debug(message: str = '', level: int = 1, **kwargs: Any) -> None","text":"

Meant to be used for messages that are not useful for most user experiences. The level option must be between 1 and 3 (inclusive).

"},{"location":"plugins/utilities/#hatchling.bridge.app.Application.display_error","title":"display_error(message: str = '', **kwargs: Any) -> None","text":"

Meant to be used for messages indicating some unrecoverable error.

"},{"location":"plugins/utilities/#hatchling.bridge.app.Application.display_info","title":"display_info(message: str = '', **kwargs: Any) -> None","text":"

Meant to be used for messages conveying basic information.

"},{"location":"plugins/utilities/#hatchling.bridge.app.Application.display_success","title":"display_success(message: str = '', **kwargs: Any) -> None","text":"

Meant to be used for messages indicating some positive outcome.

"},{"location":"plugins/utilities/#hatchling.bridge.app.Application.display_waiting","title":"display_waiting(message: str = '', **kwargs: Any) -> None","text":"

Meant to be used for messages shown before potentially time consuming operations.

"},{"location":"plugins/utilities/#hatchling.bridge.app.Application.display_warning","title":"display_warning(message: str = '', **kwargs: Any) -> None","text":"

Meant to be used for messages conveying important information.

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform","title":"Platform","text":""},{"location":"plugins/utilities/#hatch.utils.platform.Platform.default_shell","title":"default_shell: str property","text":"

Returns the default shell of the system.

On Windows systems first try the SHELL environment variable, if present, followed by the COMSPEC environment variable, defaulting to cmd. On all other platforms only the SHELL environment variable will be used, defaulting to bash.

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform.modules","title":"modules: LazilyLoadedModules property","text":"

Accessor for lazily loading modules that either take multiple milliseconds to import (like shutil and subprocess) or are not used on all platforms (like shlex).

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform.home","title":"home: Path property","text":"

The user's home directory as a path-like object.

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform.name","title":"name: str property","text":"

One of the following:

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform.windows","title":"windows: bool property","text":"

Indicates whether Hatch is running on Windows.

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform.macos","title":"macos: bool property","text":"

Indicates whether Hatch is running on macOS.

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform.linux","title":"linux: bool property","text":"

Indicates whether Hatch is running on neither Windows nor macOS.

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform.format_for_subprocess","title":"format_for_subprocess(command: str | list[str], *, shell: bool) -> str | list[str]","text":"

Format the given command in a cross-platform manner for immediate consumption by subprocess utilities.

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform.run_command","title":"run_command(command: str | list[str], *, shell: bool = False, **kwargs: Any) -> CompletedProcess","text":"

Equivalent to the standard library's subprocess.run, with the command first being properly formatted.

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform.check_command","title":"check_command(command: str | list[str], *, shell: bool = False, **kwargs: Any) -> CompletedProcess","text":"

Equivalent to run_command, but non-zero exit codes will gracefully end program execution.

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform.check_command_output","title":"check_command_output(command: str | list[str], *, shell: bool = False, **kwargs: Any) -> str","text":"

Equivalent to the output from the process returned by capture_process, but non-zero exit codes will gracefully end program execution.

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform.capture_process","title":"capture_process(command: str | list[str], *, shell: bool = False, **kwargs: Any) -> Popen","text":"

Equivalent to the standard library's subprocess.Popen, with all output captured by stdout and the command first being properly formatted.

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform.exit_with_command","title":"exit_with_command(command: list[str]) -> None","text":"

Run the given command and exit with its exit code. On non-Windows systems, this uses the standard library's os.execvp.

"},{"location":"plugins/utilities/#hatch.env.context.EnvironmentContextFormatter","title":"EnvironmentContextFormatter","text":""},{"location":"plugins/utilities/#hatch.env.context.EnvironmentContextFormatter.formatters","title":"formatters()","text":"

This returns a mapping of supported field names to their respective formatting functions. Each function accepts 2 arguments:

"},{"location":"plugins/build-hook/custom/","title":"Custom build hook","text":"

This is a custom class in a given Python file that inherits from the BuildHookInterface.

"},{"location":"plugins/build-hook/custom/#configuration","title":"Configuration","text":"

The build hook plugin name is custom.

pyproject.toml hatch.toml 
[tool.hatch.build.hooks.custom]\n[tool.hatch.build.targets.<TARGET_NAME>.hooks.custom]\n
[build.hooks.custom]\n[build.targets.<TARGET_NAME>.hooks.custom]\n
"},{"location":"plugins/build-hook/custom/#options","title":"Options","text":"Option Default Description path hatch_build.py The path of the Python file"},{"location":"plugins/build-hook/custom/#example","title":"Example","text":"hatch_build.py 
from hatchling.builders.hooks.plugin.interface import BuildHookInterface\n\n\nclass CustomBuildHook(BuildHookInterface):\n    ...\n

If multiple subclasses are found, you must define a function named get_build_hook that returns the desired build hook.

Note

Any defined PLUGIN_NAME is ignored and will always be custom.

"},{"location":"plugins/build-hook/reference/","title":"Build hook plugins","text":"

A build hook provides code that will be executed at various stages of the build process. See the documentation for build hook configuration.

"},{"location":"plugins/build-hook/reference/#known-third-party","title":"Known third-party","text":""},{"location":"plugins/build-hook/reference/#overview","title":"Overview","text":"

Build hooks run for every selected version of build targets.

The initialization stage occurs immediately before each build and the finalization stage occurs immediately after. Each stage has the opportunity to view or modify build data.

"},{"location":"plugins/build-hook/reference/#build-data","title":"Build data","text":"

Build data is a simple mapping whose contents can influence the behavior of builds. Which fields exist and are recognized depends on each build target.

The following fields are always present and recognized by the build system itself:

Field Type Description artifacts list[str] This is a list of extra artifact patterns and should generally only be appended to force_include dict[str, str] This is a mapping of extra forced inclusion paths, with this mapping taking precedence in case of conflicts build_hooks tuple[str, ...] This is an immutable sequence of the names of the configured build hooks and matches the order in which they run

Attention

While user-facing TOML options are hyphenated, build data fields should be named with underscores to allow plugins to use them as valid Python identifiers.

"},{"location":"plugins/build-hook/reference/#notes","title":"Notes","text":"

In some cases it may be necessary to use force_include rather than artifacts. For example, say that you want to install a lib.so directly at the root of site-packages and a project defines a package src/foo. If you create src/lib.so, there will never be a match because the directory traversal starts at src/foo rather than src. In that case you must do either:

build_data['force_include']['src/lib.so'] = 'src/lib.so'\n

or

build_data['force_include']['/absolute/path/to/src/lib.so'] = 'src/lib.so'\n
"},{"location":"plugins/build-hook/reference/#hatchling.builders.hooks.plugin.interface.BuildHookInterface","title":"BuildHookInterface","text":"

Example usage:

plugin.py hooks.py 
from hatchling.builders.hooks.plugin.interface import BuildHookInterface\n\n\nclass SpecialBuildHook(BuildHookInterface):\n    PLUGIN_NAME = 'special'\n    ...\n
from hatchling.plugin import hookimpl\n\nfrom .plugin import SpecialBuildHook\n\n\n@hookimpl\ndef hatch_register_build_hook():\n    return SpecialBuildHook\n
Source code in backend/src/hatchling/builders/hooks/plugin/interface.py 
class BuildHookInterface(Generic[BuilderConfigBound]):  # no cov\n    \"\"\"\n    Example usage:\n\n    ```python tab=\"plugin.py\"\n    from hatchling.builders.hooks.plugin.interface import BuildHookInterface\n\n\n    class SpecialBuildHook(BuildHookInterface):\n        PLUGIN_NAME = 'special'\n        ...\n    ```\n\n    ```python tab=\"hooks.py\"\n    from hatchling.plugin import hookimpl\n\n    from .plugin import SpecialBuildHook\n\n\n    @hookimpl\n    def hatch_register_build_hook():\n        return SpecialBuildHook\n    ```\n    \"\"\"\n\n    PLUGIN_NAME = ''\n    \"\"\"The name used for selection.\"\"\"\n\n    def __init__(\n        self,\n        root: str,\n        config: dict[str, Any],\n        build_config: BuilderConfigBound,\n        metadata: ProjectMetadata,\n        directory: str,\n        target_name: str,\n        app: Application | None = None,\n    ) -> None:\n        self.__root = root\n        self.__config = config\n        self.__build_config = build_config\n        self.__metadata = metadata\n        self.__directory = directory\n        self.__target_name = target_name\n        self.__app = app\n\n    @property\n    def app(self) -> Application:\n        \"\"\"\n        An instance of [Application](../utilities.md#hatchling.bridge.app.Application).\n        \"\"\"\n        if self.__app is None:\n            from hatchling.bridge.app import Application\n\n            self.__app = cast(Application, Application().get_safe_application())\n\n        return self.__app\n\n    @property\n    def root(self) -> str:\n        \"\"\"\n        The root of the project tree.\n        \"\"\"\n        return self.__root\n\n    @property\n    def config(self) -> dict[str, Any]:\n        \"\"\"\n        The cumulative hook configuration.\n\n        ```toml config-example\n        [tool.hatch.build.hooks.<PLUGIN_NAME>]\n        [tool.hatch.build.targets.<TARGET_NAME>.hooks.<PLUGIN_NAME>]\n        ```\n        \"\"\"\n        return self.__config\n\n    @property\n    def metadata(self) -> ProjectMetadata:\n        # Undocumented for now\n        return self.__metadata\n\n    @property\n    def build_config(self) -> BuilderConfigBound:\n        \"\"\"\n        An instance of [BuilderConfig](../utilities.md#hatchling.builders.config.BuilderConfig).\n        \"\"\"\n        return self.__build_config\n\n    @property\n    def directory(self) -> str:\n        \"\"\"\n        The build directory.\n        \"\"\"\n        return self.__directory\n\n    @property\n    def target_name(self) -> str:\n        \"\"\"\n        The plugin name of the build target.\n        \"\"\"\n        return self.__target_name\n\n    def clean(self, versions: list[str]) -> None:\n        \"\"\"\n        This occurs before the build process if the `-c`/`--clean` flag was passed to\n        the [`build`](../../cli/reference.md#hatch-build) command, or when invoking\n        the [`clean`](../../cli/reference.md#hatch-clean) command.\n        \"\"\"\n\n    def initialize(self, version: str, build_data: dict[str, Any]) -> None:\n        \"\"\"\n        This occurs immediately before each build.\n\n        Any modifications to the build data will be seen by the build target.\n        \"\"\"\n\n    def finalize(self, version: str, build_data: dict[str, Any], artifact_path: str) -> None:\n        \"\"\"\n        This occurs immediately after each build and will not run if the `--hooks-only` flag\n        was passed to the [`build`](../../cli/reference.md#hatch-build) command.\n\n        The build data will reflect any modifications done by the target during the build.\n        \"\"\"\n
"},{"location":"plugins/build-hook/reference/#hatchling.builders.hooks.plugin.interface.BuildHookInterface.PLUGIN_NAME","title":"PLUGIN_NAME = '' class-attribute instance-attribute","text":"

The name used for selection.

"},{"location":"plugins/build-hook/reference/#hatchling.builders.hooks.plugin.interface.BuildHookInterface.app","title":"app: Application property","text":"

An instance of Application.

"},{"location":"plugins/build-hook/reference/#hatchling.builders.hooks.plugin.interface.BuildHookInterface.root","title":"root: str property","text":"

The root of the project tree.

"},{"location":"plugins/build-hook/reference/#hatchling.builders.hooks.plugin.interface.BuildHookInterface.config","title":"config: dict[str, Any] property","text":"

The cumulative hook configuration.

pyproject.toml hatch.toml 
[tool.hatch.build.hooks.<PLUGIN_NAME>]\n[tool.hatch.build.targets.<TARGET_NAME>.hooks.<PLUGIN_NAME>]\n
[build.hooks.<PLUGIN_NAME>]\n[build.targets.<TARGET_NAME>.hooks.<PLUGIN_NAME>]\n
"},{"location":"plugins/build-hook/reference/#hatchling.builders.hooks.plugin.interface.BuildHookInterface.build_config","title":"build_config: BuilderConfigBound property","text":"

An instance of BuilderConfig.

"},{"location":"plugins/build-hook/reference/#hatchling.builders.hooks.plugin.interface.BuildHookInterface.target_name","title":"target_name: str property","text":"

The plugin name of the build target.

"},{"location":"plugins/build-hook/reference/#hatchling.builders.hooks.plugin.interface.BuildHookInterface.directory","title":"directory: str property","text":"

The build directory.

"},{"location":"plugins/build-hook/reference/#hatchling.builders.hooks.plugin.interface.BuildHookInterface.clean","title":"clean(versions: list[str]) -> None","text":"

This occurs before the build process if the -c/--clean flag was passed to the build command, or when invoking the clean command.

Source code in backend/src/hatchling/builders/hooks/plugin/interface.py 
def clean(self, versions: list[str]) -> None:\n    \"\"\"\n    This occurs before the build process if the `-c`/`--clean` flag was passed to\n    the [`build`](../../cli/reference.md#hatch-build) command, or when invoking\n    the [`clean`](../../cli/reference.md#hatch-clean) command.\n    \"\"\"\n
"},{"location":"plugins/build-hook/reference/#hatchling.builders.hooks.plugin.interface.BuildHookInterface.initialize","title":"initialize(version: str, build_data: dict[str, Any]) -> None","text":"

This occurs immediately before each build.

Any modifications to the build data will be seen by the build target.

Source code in backend/src/hatchling/builders/hooks/plugin/interface.py 
def initialize(self, version: str, build_data: dict[str, Any]) -> None:\n    \"\"\"\n    This occurs immediately before each build.\n\n    Any modifications to the build data will be seen by the build target.\n    \"\"\"\n
"},{"location":"plugins/build-hook/reference/#hatchling.builders.hooks.plugin.interface.BuildHookInterface.finalize","title":"finalize(version: str, build_data: dict[str, Any], artifact_path: str) -> None","text":"

This occurs immediately after each build and will not run if the --hooks-only flag was passed to the build command.

The build data will reflect any modifications done by the target during the build.

Source code in backend/src/hatchling/builders/hooks/plugin/interface.py 
def finalize(self, version: str, build_data: dict[str, Any], artifact_path: str) -> None:\n    \"\"\"\n    This occurs immediately after each build and will not run if the `--hooks-only` flag\n    was passed to the [`build`](../../cli/reference.md#hatch-build) command.\n\n    The build data will reflect any modifications done by the target during the build.\n    \"\"\"\n
"},{"location":"plugins/build-hook/version/","title":"Version build hook","text":"

This writes the project's version to a file.

"},{"location":"plugins/build-hook/version/#configuration","title":"Configuration","text":"

The build hook plugin name is version.

pyproject.toml hatch.toml 
[tool.hatch.build.hooks.version]\n[tool.hatch.build.targets.<TARGET_NAME>.hooks.version]\n
[build.hooks.version]\n[build.targets.<TARGET_NAME>.hooks.version]\n
"},{"location":"plugins/build-hook/version/#options","title":"Options","text":"Option Description path (required) A relative path to the desired file template A string representing the entire contents of path that will be formatted with a version variable pattern Rather than updating the entire file, a regular expression may be used that has a named group called version that represents the version. If set to true, a pattern will be used that looks for a variable named __version__ or VERSION that is set to a string containing the version, optionally prefixed with the lowercase letter v."},{"location":"plugins/builder/app/","title":"Application builder","text":"

This uses PyApp to build an application that is able to bootstrap itself at runtime.

Note

This requires an installation of Rust.

"},{"location":"plugins/builder/app/#configuration","title":"Configuration","text":"

The builder plugin name is app.

pyproject.toml hatch.toml 
[tool.hatch.build.targets.app]\n
[build.targets.app]\n
"},{"location":"plugins/builder/app/#options","title":"Options","text":"Option Default Description scripts all defined An array of defined script names to limit what gets built python-version latest compatible Python minor version The Python version ID to use pyapp-version The version of PyApp to use"},{"location":"plugins/builder/app/#build-behavior","title":"Build behavior","text":"

If any scripts are defined then each one will be built (limited by the scripts option). Otherwise, a single executable will be built based on the project name assuming there is an equivalently named module with a __main__.py file.

Every executable will be built inside an app directory in the output directory.

If the CARGO environment variable is set then that path will be used as the executable for performing builds.

If the CARGO_BUILD_TARGET environment variable is set then its value will be appended to the file name stems.

If the PYAPP_REPO environment variable is set then a local build will be performed inside that directory rather than installing from crates.io. Note that this is required if the CARGO environment variable refers to cross.

"},{"location":"plugins/builder/custom/","title":"Custom builder","text":"

This is a custom class in a given Python file that inherits from the BuilderInterface.

"},{"location":"plugins/builder/custom/#configuration","title":"Configuration","text":"

The builder plugin name is custom.

pyproject.toml hatch.toml 
[tool.hatch.build.targets.custom]\n
[build.targets.custom]\n
"},{"location":"plugins/builder/custom/#options","title":"Options","text":"Option Default Description path hatch_build.py The path of the Python file"},{"location":"plugins/builder/custom/#example","title":"Example","text":"hatch_build.py 
from hatchling.builders.plugin.interface import BuilderInterface\n\n\nclass CustomBuilder(BuilderInterface):\n    ...\n

If multiple subclasses are found, you must define a function named get_builder that returns the desired builder.

Note

Any defined PLUGIN_NAME is ignored and will always be custom.

"},{"location":"plugins/builder/reference/","title":"Builder plugins","text":"

See the documentation for build configuration.

"},{"location":"plugins/builder/reference/#known-third-party","title":"Known third-party","text":""},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface","title":"BuilderInterface","text":"

Example usage:

plugin.py hooks.py 
from hatchling.builders.plugin.interface import BuilderInterface\n\n\nclass SpecialBuilder(BuilderInterface):\n    PLUGIN_NAME = 'special'\n    ...\n
from hatchling.plugin import hookimpl\n\nfrom .plugin import SpecialBuilder\n\n\n@hookimpl\ndef hatch_register_builder():\n    return SpecialBuilder\n
Source code in backend/src/hatchling/builders/plugin/interface.py 
class BuilderInterface(ABC, Generic[BuilderConfigBound, PluginManagerBound]):\n    \"\"\"\n    Example usage:\n\n    ```python tab=\"plugin.py\"\n    from hatchling.builders.plugin.interface import BuilderInterface\n\n\n    class SpecialBuilder(BuilderInterface):\n        PLUGIN_NAME = 'special'\n        ...\n    ```\n\n    ```python tab=\"hooks.py\"\n    from hatchling.plugin import hookimpl\n\n    from .plugin import SpecialBuilder\n\n\n    @hookimpl\n    def hatch_register_builder():\n        return SpecialBuilder\n    ```\n    \"\"\"\n\n    PLUGIN_NAME = ''\n    \"\"\"The name used for selection.\"\"\"\n\n    def __init__(\n        self,\n        root: str,\n        plugin_manager: PluginManagerBound | None = None,\n        config: dict[str, Any] | None = None,\n        metadata: ProjectMetadata | None = None,\n        app: Application | None = None,\n    ) -> None:\n        self.__root = root\n        self.__plugin_manager = cast(PluginManagerBound, plugin_manager)\n        self.__raw_config = config\n        self.__metadata = metadata\n        self.__app = app\n        self.__config = cast(BuilderConfigBound, None)\n        self.__project_config: dict[str, Any] | None = None\n        self.__hatch_config: dict[str, Any] | None = None\n        self.__build_config: dict[str, Any] | None = None\n        self.__build_targets: list[str] | None = None\n        self.__target_config: dict[str, Any] | None = None\n\n        # Metadata\n        self.__project_id: str | None = None\n\n    def build(\n        self,\n        *,\n        directory: str | None = None,\n        versions: list[str] | None = None,\n        hooks_only: bool | None = None,\n        clean: bool | None = None,\n        clean_hooks_after: bool | None = None,\n        clean_only: bool | None = False,\n    ) -> Generator[str, None, None]:\n        # Fail early for invalid project metadata\n        self.metadata.validate_fields()\n\n        if directory is None:\n            directory = (\n                self.config.normalize_build_directory(os.environ[BuildEnvVars.LOCATION])\n                if BuildEnvVars.LOCATION in os.environ\n                else self.config.directory\n            )\n\n        if not os.path.isdir(directory):\n            os.makedirs(directory)\n\n        version_api = self.get_version_api()\n\n        versions = versions or self.config.versions\n        if versions:\n            unknown_versions = set(versions) - set(version_api)\n            if unknown_versions:\n                message = (\n                    f'Unknown versions for target `{self.PLUGIN_NAME}`: {\", \".join(map(str, sorted(unknown_versions)))}'\n                )\n                raise ValueError(message)\n\n        if hooks_only is None:\n            hooks_only = env_var_enabled(BuildEnvVars.HOOKS_ONLY)\n\n        configured_build_hooks = self.get_build_hooks(directory)\n        build_hooks = list(configured_build_hooks.values())\n\n        if clean_only:\n            clean = True\n        elif clean is None:\n            clean = env_var_enabled(BuildEnvVars.CLEAN)\n        if clean:\n            if not hooks_only:\n                self.clean(directory, versions)\n\n            for build_hook in build_hooks:\n                build_hook.clean(versions)\n\n            if clean_only:\n                return\n\n        if clean_hooks_after is None:\n            clean_hooks_after = env_var_enabled(BuildEnvVars.CLEAN_HOOKS_AFTER)\n\n        for version in versions:\n            self.app.display_debug(f'Building `{self.PLUGIN_NAME}` version `{version}`')\n\n            build_data = self.get_default_build_data()\n            self.set_build_data_defaults(build_data)\n\n            # Allow inspection of configured build hooks and the order in which they run\n            build_data['build_hooks'] = tuple(configured_build_hooks)\n\n            # Execute all `initialize` build hooks\n            for build_hook in build_hooks:\n                build_hook.initialize(version, build_data)\n\n            if hooks_only:\n                self.app.display_debug(f'Only ran build hooks for `{self.PLUGIN_NAME}` version `{version}`')\n                continue\n\n            # Build the artifact\n            with self.config.set_build_data(build_data):\n                artifact = version_api[version](directory, **build_data)\n\n            # Execute all `finalize` build hooks\n            for build_hook in build_hooks:\n                build_hook.finalize(version, build_data, artifact)\n\n            if clean_hooks_after:\n                for build_hook in build_hooks:\n                    build_hook.clean([version])\n\n            yield artifact\n\n    def recurse_included_files(self) -> Iterable[IncludedFile]:\n        \"\"\"\n        Returns a consistently generated series of file objects for every file that should be distributed. Each file\n        object has three `str` attributes:\n\n        - `path` - the absolute path\n        - `relative_path` - the path relative to the project root; will be an empty string for external files\n        - `distribution_path` - the path to be distributed as\n        \"\"\"\n        yield from self.recurse_selected_project_files()\n        yield from self.recurse_forced_files(self.config.get_force_include())\n\n    def recurse_selected_project_files(self) -> Iterable[IncludedFile]:\n        if self.config.only_include:\n            yield from self.recurse_explicit_files(self.config.only_include)\n        else:\n            yield from self.recurse_project_files()\n\n    def recurse_project_files(self) -> Iterable[IncludedFile]:\n        for root, dirs, files in safe_walk(self.root):\n            relative_path = get_relative_path(root, self.root)\n\n            dirs[:] = sorted(d for d in dirs if not self.config.directory_is_excluded(d, relative_path))\n\n            files.sort()\n            is_package = '__init__.py' in files\n            for f in files:\n                relative_file_path = os.path.join(relative_path, f)\n                distribution_path = self.config.get_distribution_path(relative_file_path)\n                if self.config.path_is_reserved(distribution_path):\n                    continue\n\n                if self.config.include_path(relative_file_path, is_package=is_package):\n                    yield IncludedFile(\n                        os.path.join(root, f), relative_file_path, self.config.get_distribution_path(relative_file_path)\n                    )\n\n    def recurse_forced_files(self, inclusion_map: dict[str, str]) -> Iterable[IncludedFile]:\n        for source, target_path in inclusion_map.items():\n            external = not source.startswith(self.root)\n            if os.path.isfile(source):\n                yield IncludedFile(\n                    source,\n                    '' if external else os.path.relpath(source, self.root),\n                    self.config.get_distribution_path(target_path),\n                )\n            elif os.path.isdir(source):\n                for root, dirs, files in safe_walk(source):\n                    relative_directory = get_relative_path(root, source)\n\n                    dirs[:] = sorted(d for d in dirs if d not in EXCLUDED_DIRECTORIES)\n\n                    files.sort()\n                    for f in files:\n                        relative_file_path = os.path.join(target_path, relative_directory, f)\n                        distribution_path = self.config.get_distribution_path(relative_file_path)\n                        if not self.config.path_is_reserved(distribution_path):\n                            yield IncludedFile(\n                                os.path.join(root, f),\n                                '' if external else relative_file_path,\n                                distribution_path,\n                            )\n            else:\n                msg = f'Forced include not found: {source}'\n                raise FileNotFoundError(msg)\n\n    def recurse_explicit_files(self, inclusion_map: dict[str, str]) -> Iterable[IncludedFile]:\n        for source, target_path in inclusion_map.items():\n            external = not source.startswith(self.root)\n            if os.path.isfile(source):\n                distribution_path = self.config.get_distribution_path(target_path)\n                if not self.config.path_is_reserved(distribution_path):\n                    yield IncludedFile(\n                        source,\n                        '' if external else os.path.relpath(source, self.root),\n                        self.config.get_distribution_path(target_path),\n                    )\n            elif os.path.isdir(source):\n                for root, dirs, files in safe_walk(source):\n                    relative_directory = get_relative_path(root, source)\n\n                    dirs[:] = sorted(d for d in dirs if d not in EXCLUDED_DIRECTORIES)\n\n                    files.sort()\n                    is_package = '__init__.py' in files\n                    for f in files:\n                        relative_file_path = os.path.join(target_path, relative_directory, f)\n                        distribution_path = self.config.get_distribution_path(relative_file_path)\n                        if self.config.path_is_reserved(distribution_path):\n                            continue\n\n                        if self.config.include_path(relative_file_path, explicit=True, is_package=is_package):\n                            yield IncludedFile(\n                                os.path.join(root, f), '' if external else relative_file_path, distribution_path\n                            )\n\n    @property\n    def root(self) -> str:\n        \"\"\"\n        The root of the project tree.\n        \"\"\"\n        return self.__root\n\n    @property\n    def plugin_manager(self) -> PluginManagerBound:\n        if self.__plugin_manager is None:\n            from hatchling.plugin.manager import PluginManager\n\n            self.__plugin_manager = PluginManager()\n\n        return self.__plugin_manager\n\n    @property\n    def metadata(self) -> ProjectMetadata:\n        if self.__metadata is None:\n            from hatchling.metadata.core import ProjectMetadata\n\n            self.__metadata = ProjectMetadata(self.root, self.plugin_manager, self.__raw_config)\n\n        return self.__metadata\n\n    @property\n    def app(self) -> Application:\n        \"\"\"\n        An instance of [Application](../utilities.md#hatchling.bridge.app.Application).\n        \"\"\"\n        if self.__app is None:\n            from hatchling.bridge.app import Application\n\n            self.__app = cast(Application, Application().get_safe_application())\n\n        return self.__app\n\n    @property\n    def raw_config(self) -> dict[str, Any]:\n        if self.__raw_config is None:\n            self.__raw_config = self.metadata.config\n\n        return self.__raw_config\n\n    @property\n    def project_config(self) -> dict[str, Any]:\n        if self.__project_config is None:\n            self.__project_config = self.metadata.core.config\n\n        return self.__project_config\n\n    @property\n    def hatch_config(self) -> dict[str, Any]:\n        if self.__hatch_config is None:\n            self.__hatch_config = self.metadata.hatch.config\n\n        return self.__hatch_config\n\n    @property\n    def config(self) -> BuilderConfigBound:\n        \"\"\"\n        An instance of [BuilderConfig](../utilities.md#hatchling.builders.config.BuilderConfig).\n        \"\"\"\n        if self.__config is None:\n            self.__config = self.get_config_class()(\n                self, self.root, self.PLUGIN_NAME, self.build_config, self.target_config\n            )\n\n        return self.__config\n\n    @property\n    def build_config(self) -> dict[str, Any]:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.build]\n        ```\n        \"\"\"\n        if self.__build_config is None:\n            self.__build_config = self.metadata.hatch.build_config\n\n        return self.__build_config\n\n    @property\n    def target_config(self) -> dict[str, Any]:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.build.targets.<PLUGIN_NAME>]\n        ```\n        \"\"\"\n        if self.__target_config is None:\n            target_config: dict[str, Any] = self.metadata.hatch.build_targets.get(self.PLUGIN_NAME, {})\n            if not isinstance(target_config, dict):\n                message = f'Field `tool.hatch.build.targets.{self.PLUGIN_NAME}` must be a table'\n                raise TypeError(message)\n\n            self.__target_config = target_config\n\n        return self.__target_config\n\n    @property\n    def project_id(self) -> str:\n        if self.__project_id is None:\n            self.__project_id = f'{self.normalize_file_name_component(self.metadata.core.name)}-{self.metadata.version}'\n\n        return self.__project_id\n\n    def get_build_hooks(self, directory: str) -> dict[str, BuildHookInterface]:\n        configured_build_hooks = {}\n        for hook_name, config in self.config.hook_config.items():\n            build_hook = self.plugin_manager.build_hook.get(hook_name)\n            if build_hook is None:\n                from hatchling.plugin.exceptions import UnknownPluginError\n\n                message = f'Unknown build hook: {hook_name}'\n                raise UnknownPluginError(message)\n\n            configured_build_hooks[hook_name] = build_hook(\n                self.root, config, self.config, self.metadata, directory, self.PLUGIN_NAME, self.app\n            )\n\n        return configured_build_hooks\n\n    @abstractmethod\n    def get_version_api(self) -> dict[str, Callable]:\n        \"\"\"\n        A mapping of `str` versions to a callable that is used for building.\n        Each callable must have the following signature:\n\n        ```python\n        def ...(build_dir: str, build_data: dict) -> str:\n        ```\n\n        The return value must be the absolute path to the built artifact.\n        \"\"\"\n\n    def get_default_versions(self) -> list[str]:\n        \"\"\"\n        A list of versions to build when users do not specify any, defaulting to all versions.\n        \"\"\"\n        return list(self.get_version_api())\n\n    def get_default_build_data(self) -> dict[str, Any]:  # noqa: PLR6301\n        \"\"\"\n        A mapping that can be modified by [build hooks](../build-hook/reference.md) to influence the behavior of builds.\n        \"\"\"\n        return {}\n\n    def set_build_data_defaults(self, build_data: dict[str, Any]) -> None:  # noqa: PLR6301\n        build_data.setdefault('artifacts', [])\n        build_data.setdefault('force_include', {})\n\n    def clean(self, directory: str, versions: list[str]) -> None:\n        \"\"\"\n        Called before builds if the `-c`/`--clean` flag was passed to the\n        [`build`](../../cli/reference.md#hatch-build) command.\n        \"\"\"\n\n    @classmethod\n    def get_config_class(cls) -> type[BuilderConfig]:\n        \"\"\"\n        Must return a subclass of [BuilderConfig](../utilities.md#hatchling.builders.config.BuilderConfig).\n        \"\"\"\n        return BuilderConfig\n\n    @staticmethod\n    def normalize_file_name_component(file_name: str) -> str:\n        \"\"\"\n        https://peps.python.org/pep-0427/#escaping-and-unicode\n        \"\"\"\n        return re.sub(r'[^\\w\\d.]+', '_', file_name, flags=re.UNICODE)\n
"},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface.PLUGIN_NAME","title":"PLUGIN_NAME = '' class-attribute instance-attribute","text":"

The name used for selection.

"},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface.app","title":"app: Application property","text":"

An instance of Application.

"},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface.root","title":"root: str property","text":"

The root of the project tree.

"},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface.build_config","title":"build_config: dict[str, Any] property","text":"pyproject.toml hatch.toml 
[tool.hatch.build]\n
[build]\n
"},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface.target_config","title":"target_config: dict[str, Any] property","text":"pyproject.toml hatch.toml 
[tool.hatch.build.targets.<PLUGIN_NAME>]\n
[build.targets.<PLUGIN_NAME>]\n
"},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface.config","title":"config: BuilderConfigBound property","text":"

An instance of BuilderConfig.

"},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface.get_config_class","title":"get_config_class() -> type[BuilderConfig] classmethod","text":"

Must return a subclass of BuilderConfig.

Source code in backend/src/hatchling/builders/plugin/interface.py 
@classmethod\ndef get_config_class(cls) -> type[BuilderConfig]:\n    \"\"\"\n    Must return a subclass of [BuilderConfig](../utilities.md#hatchling.builders.config.BuilderConfig).\n    \"\"\"\n    return BuilderConfig\n
"},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface.get_version_api","title":"get_version_api() -> dict[str, Callable] abstractmethod","text":"

A mapping of str versions to a callable that is used for building. Each callable must have the following signature:

def ...(build_dir: str, build_data: dict) -> str:\n

The return value must be the absolute path to the built artifact.

Source code in backend/src/hatchling/builders/plugin/interface.py 
@abstractmethod\ndef get_version_api(self) -> dict[str, Callable]:\n    \"\"\"\n    A mapping of `str` versions to a callable that is used for building.\n    Each callable must have the following signature:\n\n    ```python\n    def ...(build_dir: str, build_data: dict) -> str:\n    ```\n\n    The return value must be the absolute path to the built artifact.\n    \"\"\"\n
"},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface.get_default_versions","title":"get_default_versions() -> list[str]","text":"

A list of versions to build when users do not specify any, defaulting to all versions.

Source code in backend/src/hatchling/builders/plugin/interface.py 
def get_default_versions(self) -> list[str]:\n    \"\"\"\n    A list of versions to build when users do not specify any, defaulting to all versions.\n    \"\"\"\n    return list(self.get_version_api())\n
"},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface.clean","title":"clean(directory: str, versions: list[str]) -> None","text":"

Called before builds if the -c/--clean flag was passed to the build command.

Source code in backend/src/hatchling/builders/plugin/interface.py 
def clean(self, directory: str, versions: list[str]) -> None:\n    \"\"\"\n    Called before builds if the `-c`/`--clean` flag was passed to the\n    [`build`](../../cli/reference.md#hatch-build) command.\n    \"\"\"\n
"},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface.recurse_included_files","title":"recurse_included_files() -> Iterable[IncludedFile]","text":"

Returns a consistently generated series of file objects for every file that should be distributed. Each file object has three str attributes:

Source code in backend/src/hatchling/builders/plugin/interface.py 
def recurse_included_files(self) -> Iterable[IncludedFile]:\n    \"\"\"\n    Returns a consistently generated series of file objects for every file that should be distributed. Each file\n    object has three `str` attributes:\n\n    - `path` - the absolute path\n    - `relative_path` - the path relative to the project root; will be an empty string for external files\n    - `distribution_path` - the path to be distributed as\n    \"\"\"\n    yield from self.recurse_selected_project_files()\n    yield from self.recurse_forced_files(self.config.get_force_include())\n
"},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface.get_default_build_data","title":"get_default_build_data() -> dict[str, Any]","text":"

A mapping that can be modified by build hooks to influence the behavior of builds.

Source code in backend/src/hatchling/builders/plugin/interface.py 
def get_default_build_data(self) -> dict[str, Any]:  # noqa: PLR6301\n    \"\"\"\n    A mapping that can be modified by [build hooks](../build-hook/reference.md) to influence the behavior of builds.\n    \"\"\"\n    return {}\n
"},{"location":"plugins/builder/sdist/","title":"Source distribution builder","text":"

A source distribution, or sdist, is an archive of Python \"source code\". Although largely unspecified, by convention it should include everything that is required to build a wheel without making network requests.

"},{"location":"plugins/builder/sdist/#configuration","title":"Configuration","text":"

The builder plugin name is sdist.

pyproject.toml hatch.toml 
[tool.hatch.build.targets.sdist]\n
[build.targets.sdist]\n
"},{"location":"plugins/builder/sdist/#options","title":"Options","text":"Option Default Description core-metadata-version \"2.1\" The version of core metadata to use strict-naming true Whether or not file names should contain the normalized version of the project name support-legacy false Whether or not to include a setup.py file to support legacy installation mechanisms"},{"location":"plugins/builder/sdist/#versions","title":"Versions","text":"Version Description standard (default) The latest conventional format"},{"location":"plugins/builder/sdist/#default-file-selection","title":"Default file selection","text":"

When the user has not set any file selection options, all files that are not ignored by your VCS will be included.

Note

The following files are always included and cannot be excluded:

"},{"location":"plugins/builder/sdist/#reproducibility","title":"Reproducibility","text":"

Reproducible builds are supported.

"},{"location":"plugins/builder/sdist/#build-data","title":"Build data","text":"

This is data that can be modified by build hooks.

Data Default Description dependencies Extra project dependencies"},{"location":"plugins/builder/wheel/","title":"Wheel builder","text":"

A wheel is a binary distribution of a Python package that can be installed directly into an environment.

"},{"location":"plugins/builder/wheel/#configuration","title":"Configuration","text":"

The builder plugin name is wheel.

pyproject.toml hatch.toml 
[tool.hatch.build.targets.wheel]\n
[build.targets.wheel]\n
"},{"location":"plugins/builder/wheel/#options","title":"Options","text":"Option Default Description core-metadata-version \"2.1\" The version of core metadata to use shared-data A mapping similar to the forced inclusion option corresponding to data that will be installed globally in a given Python environment, usually under sys.prefix extra-metadata A mapping similar to the forced inclusion option corresponding to extra metadata that will be shipped in a directory named extra_metadata strict-naming true Whether or not file names should contain the normalized version of the project name macos-max-compat true Whether or not on macOS, when build hooks have set the infer_tag build data, the wheel name should signal broad support rather than specific versions for newer SDK versions.Note: The default will become false, and this option eventually removed, sometime after consumers like pip start supporting these newer SDK versions. bypass-selection false Whether or not to suppress the error when one has not defined any file selection options and all heuristics have failed to determine what to ship"},{"location":"plugins/builder/wheel/#versions","title":"Versions","text":"Version Description standard (default) The latest standardized format editable A wheel that only ships .pth files or import hooks for real-time development"},{"location":"plugins/builder/wheel/#default-file-selection","title":"Default file selection","text":"

When the user has not set any file selection options, the project name will be used to determine the package to ship in the following heuristic order:

  1. <NAME>/__init__.py
  2. src/<NAME>/__init__.py
  3. <NAME>.py
  4. <NAMESPACE>/<NAME>/__init__.py

If none of these heuristics are satisfied, an error will be raised.

"},{"location":"plugins/builder/wheel/#reproducibility","title":"Reproducibility","text":"

Reproducible builds are supported.

"},{"location":"plugins/builder/wheel/#build-data","title":"Build data","text":"

This is data that can be modified by build hooks.

Data Default Description tag The full tag part of the filename (e.g. py3-none-any), defaulting to a cross-platform wheel with the supported major versions of Python based on project metadata infer_tag False When tag is not set, this may be enabled to use the one most specific to the platform, Python interpreter, and ABI pure_python True Whether or not to write metadata indicating that the package does not contain any platform-specific files dependencies Extra project dependencies extra_metadata Additional extra-metadata entries, which take precedence in case of conflicts force_include_editable Similar to the force_include option but specifically for the editable version and takes precedence"},{"location":"plugins/environment/reference/","title":"Environment plugins","text":"

See the documentation for environment configuration.

"},{"location":"plugins/environment/reference/#known-third-party","title":"Known third-party","text":""},{"location":"plugins/environment/reference/#installation","title":"Installation","text":"

Any required environment types that are not built-in must be manually installed alongside Hatch or listed in the tool.hatch.env.requires array for automatic management:

pyproject.toml hatch.toml 
[tool.hatch.env]\nrequires = [\n  \"...\",\n]\n
[env]\nrequires = [\n  \"...\",\n]\n
"},{"location":"plugins/environment/reference/#life-cycle","title":"Life cycle","text":"

Whenever an environment is used, the following logic is performed:

Source code in src/hatch/cli/application.py 
def prepare_environment(self, environment: EnvironmentInterface):\n    if not environment.exists():\n        self.env_metadata.reset(environment)\n\n        with self.status(f'Creating environment: {environment.name}'):\n            environment.create()\n\n        if not environment.skip_install:\n            if environment.pre_install_commands:\n                with self.status('Running pre-installation commands'):\n                    self.run_shell_commands(environment, environment.pre_install_commands, source='pre-install')\n\n            if environment.dev_mode:\n                with self.status('Installing project in development mode'):\n                    environment.install_project_dev_mode()\n            else:\n                with self.status('Installing project'):\n                    environment.install_project()\n\n            if environment.post_install_commands:\n                with self.status('Running post-installation commands'):\n                    self.run_shell_commands(environment, environment.post_install_commands, source='post-install')\n\n    new_dep_hash = environment.dependency_hash()\n    current_dep_hash = self.env_metadata.dependency_hash(environment)\n    if new_dep_hash != current_dep_hash:\n        with self.status('Checking dependencies'):\n            dependencies_in_sync = environment.dependencies_in_sync()\n\n        if not dependencies_in_sync:\n            with self.status('Syncing dependencies'):\n                environment.sync_dependencies()\n                new_dep_hash = environment.dependency_hash()\n\n        self.env_metadata.update_dependency_hash(environment, new_dep_hash)\n
"},{"location":"plugins/environment/reference/#build-environments","title":"Build environments","text":"

All environment types should offer support for a special sub-environment in which projects can be built. This environment is used in the following scenarios:

"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface","title":"EnvironmentInterface","text":"

Example usage:

plugin.py hooks.py 
    from hatch.env.plugin.interface import EnvironmentInterface\n\n\n    class SpecialEnvironment(EnvironmentInterface):\n        PLUGIN_NAME = 'special'\n        ...\n
    from hatchling.plugin import hookimpl\n\n    from .plugin import SpecialEnvironment\n\n\n    @hookimpl\n    def hatch_register_environment():\n        return SpecialEnvironment\n
Source code in src/hatch/env/plugin/interface.py 
class EnvironmentInterface(ABC):\n    \"\"\"\n    Example usage:\n\n    ```python tab=\"plugin.py\"\n        from hatch.env.plugin.interface import EnvironmentInterface\n\n\n        class SpecialEnvironment(EnvironmentInterface):\n            PLUGIN_NAME = 'special'\n            ...\n    ```\n\n    ```python tab=\"hooks.py\"\n        from hatchling.plugin import hookimpl\n\n        from .plugin import SpecialEnvironment\n\n\n        @hookimpl\n        def hatch_register_environment():\n            return SpecialEnvironment\n    ```\n    \"\"\"\n\n    PLUGIN_NAME = ''\n    \"\"\"The name used for selection.\"\"\"\n\n    def __init__(\n        self,\n        root,\n        metadata,\n        name,\n        config,\n        matrix_variables,\n        data_directory,\n        isolated_data_directory,\n        platform,\n        verbosity,\n        app=None,\n    ):\n        self.__root = root\n        self.__metadata = metadata\n        self.__name = name\n        self.__config = config\n        self.__matrix_variables = matrix_variables\n        self.__data_directory = data_directory\n        self.__isolated_data_directory = isolated_data_directory\n        self.__platform = platform\n        self.__verbosity = verbosity\n        self.__app = app\n        self.__context = None\n\n        self._system_python = None\n        self._env_vars = None\n        self._env_include = None\n        self._env_exclude = None\n        self._environment_dependencies_complex = None\n        self._environment_dependencies = None\n        self._dependencies_complex = None\n        self._dependencies = None\n        self._platforms = None\n        self._skip_install = None\n        self._dev_mode = None\n        self._features = None\n        self._description = None\n        self._scripts = None\n        self._pre_install_commands = None\n        self._post_install_commands = None\n\n    @property\n    def matrix_variables(self):\n        return self.__matrix_variables\n\n    @property\n    def app(self):\n        \"\"\"\n        An instance of [Application](../utilities.md#hatchling.bridge.app.Application).\n        \"\"\"\n        if self.__app is None:\n            from hatchling.bridge.app import Application\n\n            self.__app = Application().get_safe_application()\n\n        return self.__app\n\n    @property\n    def context(self):\n        if self.__context is None:\n            self.__context = self.get_context()\n\n        return self.__context\n\n    @property\n    def verbosity(self):\n        return self.__verbosity\n\n    @property\n    def root(self):\n        \"\"\"\n        The root of the project tree as a path-like object.\n        \"\"\"\n        return self.__root\n\n    @property\n    def metadata(self):\n        return self.__metadata\n\n    @property\n    def name(self) -> str:\n        \"\"\"\n        The name of the environment.\n        \"\"\"\n        return self.__name\n\n    @property\n    def platform(self):\n        \"\"\"\n        An instance of [Platform](../utilities.md#hatch.utils.platform.Platform).\n        \"\"\"\n        return self.__platform\n\n    @property\n    def data_directory(self):\n        \"\"\"\n        The [directory](../../config/hatch.md#environments) this plugin should use for storage as a path-like object.\n        If the user has not configured one then this will be the same as the\n        [isolated data directory](reference.md#hatch.env.plugin.interface.EnvironmentInterface.isolated_data_directory).\n        \"\"\"\n        return self.__data_directory\n\n    @property\n    def isolated_data_directory(self):\n        \"\"\"\n        The default [directory](../../config/hatch.md#environments) reserved exclusively for this plugin as a path-like\n        object.\n        \"\"\"\n        return self.__isolated_data_directory\n\n    @property\n    def config(self) -> dict:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.envs.<ENV_NAME>]\n        ```\n        \"\"\"\n        return self.__config\n\n    @property\n    def system_python(self):\n        if self._system_python is None:\n            system_python = os.environ.get(AppEnvVars.PYTHON)\n            if system_python == 'self':\n                system_python = sys.executable\n\n            system_python = (\n                system_python\n                or self.platform.modules.shutil.which('python')\n                or self.platform.modules.shutil.which('python3')\n                or sys.executable\n            )\n            if not isabs(system_python):\n                system_python = self.platform.modules.shutil.which(system_python)\n\n            self._system_python = system_python\n\n        return self._system_python\n\n    @property\n    def env_vars(self) -> dict:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.envs.<ENV_NAME>.env-vars]\n        ```\n        \"\"\"\n        if self._env_vars is None:\n            env_vars = self.config.get('env-vars', {})\n            if not isinstance(env_vars, dict):\n                message = f'Field `tool.hatch.envs.{self.name}.env-vars` must be a mapping'\n                raise TypeError(message)\n\n            for key, value in env_vars.items():\n                if not isinstance(value, str):\n                    message = (\n                        f'Environment variable `{key}` of field `tool.hatch.envs.{self.name}.env-vars` must be a string'\n                    )\n                    raise TypeError(message)\n\n            new_env_vars = {}\n            with self.metadata.context.apply_context(self.context):\n                for key, value in env_vars.items():\n                    new_env_vars[key] = self.metadata.context.format(value)\n\n            new_env_vars[AppEnvVars.ENV_ACTIVE] = self.name\n            self._env_vars = new_env_vars\n\n        return self._env_vars\n\n    @property\n    def env_include(self) -> list[str]:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.envs.<ENV_NAME>]\n        env-include = [...]\n        ```\n        \"\"\"\n        if self._env_include is None:\n            env_include = self.config.get('env-include', [])\n            if not isinstance(env_include, list):\n                message = f'Field `tool.hatch.envs.{self.name}.env-include` must be an array'\n                raise TypeError(message)\n\n            for i, pattern in enumerate(env_include, 1):\n                if not isinstance(pattern, str):\n                    message = f'Pattern #{i} of field `tool.hatch.envs.{self.name}.env-include` must be a string'\n                    raise TypeError(message)\n\n            if env_include:\n                self._env_include = ['HATCH_BUILD_*', *env_include]\n            else:\n                self._env_include = env_include\n\n        return self._env_include\n\n    @property\n    def env_exclude(self) -> list[str]:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.envs.<ENV_NAME>]\n        env-exclude = [...]\n        ```\n        \"\"\"\n        if self._env_exclude is None:\n            env_exclude = self.config.get('env-exclude', [])\n            if not isinstance(env_exclude, list):\n                message = f'Field `tool.hatch.envs.{self.name}.env-exclude` must be an array'\n                raise TypeError(message)\n\n            for i, pattern in enumerate(env_exclude, 1):\n                if not isinstance(pattern, str):\n                    message = f'Pattern #{i} of field `tool.hatch.envs.{self.name}.env-exclude` must be a string'\n                    raise TypeError(message)\n\n            self._env_exclude = env_exclude\n\n        return self._env_exclude\n\n    @property\n    def environment_dependencies_complex(self):\n        if self._environment_dependencies_complex is None:\n            from packaging.requirements import InvalidRequirement, Requirement\n\n            dependencies_complex = []\n            with self.apply_context():\n                for option in ('dependencies', 'extra-dependencies'):\n                    dependencies = self.config.get(option, [])\n                    if not isinstance(dependencies, list):\n                        message = f'Field `tool.hatch.envs.{self.name}.{option}` must be an array'\n                        raise TypeError(message)\n\n                    for i, entry in enumerate(dependencies, 1):\n                        if not isinstance(entry, str):\n                            message = (\n                                f'Dependency #{i} of field `tool.hatch.envs.{self.name}.{option}` must be a string'\n                            )\n                            raise TypeError(message)\n\n                        try:\n                            dependencies_complex.append(Requirement(self.metadata.context.format(entry)))\n                        except InvalidRequirement as e:\n                            message = f'Dependency #{i} of field `tool.hatch.envs.{self.name}.{option}` is invalid: {e}'\n                            raise ValueError(message) from None\n\n            self._environment_dependencies_complex = dependencies_complex\n\n        return self._environment_dependencies_complex\n\n    @property\n    def environment_dependencies(self) -> list[str]:\n        \"\"\"\n        The list of all [environment dependencies](../../config/environment/overview.md#dependencies).\n        \"\"\"\n        if self._environment_dependencies is None:\n            self._environment_dependencies = [str(dependency) for dependency in self.environment_dependencies_complex]\n\n        return self._environment_dependencies\n\n    @property\n    def dependencies_complex(self):\n        if self._dependencies_complex is None:\n            all_dependencies_complex = list(self.environment_dependencies_complex)\n\n            # Ensure these are checked last to speed up initial environment creation since\n            # they will already be installed along with the project\n            if (not self.skip_install and self.dev_mode) or self.features:\n                from hatch.utils.dep import get_project_dependencies_complex\n\n                dependencies_complex, optional_dependencies_complex = get_project_dependencies_complex(self)\n\n                if not self.skip_install and self.dev_mode:\n                    all_dependencies_complex.extend(dependencies_complex.values())\n\n                for feature in self.features:\n                    if feature not in optional_dependencies_complex:\n                        message = (\n                            f'Feature `{feature}` of field `tool.hatch.envs.{self.name}.features` is not '\n                            f'defined in the dynamic field `project.optional-dependencies`'\n                        )\n                        raise ValueError(message)\n\n                    all_dependencies_complex.extend(optional_dependencies_complex[feature].values())\n\n            self._dependencies_complex = all_dependencies_complex\n\n        return self._dependencies_complex\n\n    @property\n    def dependencies(self) -> list[str]:\n        \"\"\"\n        The list of all [project dependencies](../../config/metadata.md#dependencies) (if\n        [installed](../../config/environment/overview.md#skip-install) and in\n        [dev mode](../../config/environment/overview.md#dev-mode)), selected\n        [optional dependencies](../../config/environment/overview.md#features), and\n        [environment dependencies](../../config/environment/overview.md#dependencies).\n        \"\"\"\n        if self._dependencies is None:\n            self._dependencies = [str(dependency) for dependency in self.dependencies_complex]\n\n        return self._dependencies\n\n    @property\n    def platforms(self) -> list[str]:\n        \"\"\"\n        All names are stored as their lower-cased version.\n\n        ```toml config-example\n        [tool.hatch.envs.<ENV_NAME>]\n        platforms = [...]\n        ```\n        \"\"\"\n        if self._platforms is None:\n            platforms = self.config.get('platforms', [])\n            if not isinstance(platforms, list):\n                message = f'Field `tool.hatch.envs.{self.name}.platforms` must be an array'\n                raise TypeError(message)\n\n            for i, command in enumerate(platforms, 1):\n                if not isinstance(command, str):\n                    message = f'Platform #{i} of field `tool.hatch.envs.{self.name}.platforms` must be a string'\n                    raise TypeError(message)\n\n            self._platforms = [platform.lower() for platform in platforms]\n\n        return self._platforms\n\n    @property\n    def skip_install(self) -> bool:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.envs.<ENV_NAME>]\n        skip-install = ...\n        ```\n        \"\"\"\n        if self._skip_install is None:\n            skip_install = self.config.get('skip-install', not self.metadata.has_project_file())\n            if not isinstance(skip_install, bool):\n                message = f'Field `tool.hatch.envs.{self.name}.skip-install` must be a boolean'\n                raise TypeError(message)\n\n            self._skip_install = skip_install\n\n        return self._skip_install\n\n    @property\n    def dev_mode(self) -> bool:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.envs.<ENV_NAME>]\n        dev-mode = ...\n        ```\n        \"\"\"\n        if self._dev_mode is None:\n            dev_mode = self.config.get('dev-mode', True)\n            if not isinstance(dev_mode, bool):\n                message = f'Field `tool.hatch.envs.{self.name}.dev-mode` must be a boolean'\n                raise TypeError(message)\n\n            self._dev_mode = dev_mode\n\n        return self._dev_mode\n\n    @property\n    def features(self):\n        if self._features is None:\n            from hatchling.metadata.utils import normalize_project_name\n\n            features = self.config.get('features', [])\n            if not isinstance(features, list):\n                message = f'Field `tool.hatch.envs.{self.name}.features` must be an array of strings'\n                raise TypeError(message)\n\n            all_features = set()\n            for i, feature in enumerate(features, 1):\n                if not isinstance(feature, str):\n                    message = f'Feature #{i} of field `tool.hatch.envs.{self.name}.features` must be a string'\n                    raise TypeError(message)\n\n                if not feature:\n                    message = f'Feature #{i} of field `tool.hatch.envs.{self.name}.features` cannot be an empty string'\n                    raise ValueError(message)\n\n                normalized_feature = (\n                    feature\n                    if self.metadata.hatch.metadata.allow_ambiguous_features\n                    else normalize_project_name(feature)\n                )\n                if (\n                    not self.metadata.hatch.metadata.hook_config\n                    and normalized_feature not in self.metadata.core.optional_dependencies\n                ):\n                    message = (\n                        f'Feature `{normalized_feature}` of field `tool.hatch.envs.{self.name}.features` is not '\n                        f'defined in field `project.optional-dependencies`'\n                    )\n                    raise ValueError(message)\n\n                all_features.add(normalized_feature)\n\n            self._features = sorted(all_features)\n\n        return self._features\n\n    @property\n    def description(self) -> str:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.envs.<ENV_NAME>]\n        description = ...\n        ```\n        \"\"\"\n        if self._description is None:\n            description = self.config.get('description', '')\n            if not isinstance(description, str):\n                message = f'Field `tool.hatch.envs.{self.name}.description` must be a string'\n                raise TypeError(message)\n\n            self._description = description\n\n        return self._description\n\n    @property\n    def scripts(self):\n        if self._scripts is None:\n            script_config = self.config.get('scripts', {})\n            if not isinstance(script_config, dict):\n                message = f'Field `tool.hatch.envs.{self.name}.scripts` must be a table'\n                raise TypeError(message)\n\n            config = {}\n\n            for name, data in script_config.items():\n                if ' ' in name:\n                    message = (\n                        f'Script name `{name}` in field `tool.hatch.envs.{self.name}.scripts` must not contain spaces'\n                    )\n                    raise ValueError(message)\n\n                commands = []\n\n                if isinstance(data, str):\n                    commands.append(data)\n                elif isinstance(data, list):\n                    for i, command in enumerate(data, 1):\n                        if not isinstance(command, str):\n                            message = (\n                                f'Command #{i} in field `tool.hatch.envs.{self.name}.scripts.{name}` must be a string'\n                            )\n                            raise TypeError(message)\n\n                        commands.append(command)\n                else:\n                    message = (\n                        f'Field `tool.hatch.envs.{self.name}.scripts.{name}` must be a string or an array of strings'\n                    )\n                    raise TypeError(message)\n\n                config[name] = commands\n\n            seen = {}\n            active = []\n            for script_name, commands in config.items():\n                commands[:] = expand_script_commands(self.name, script_name, commands, config, seen, active)\n\n            self._scripts = config\n\n        return self._scripts\n\n    @property\n    def pre_install_commands(self):\n        if self._pre_install_commands is None:\n            pre_install_commands = self.config.get('pre-install-commands', [])\n            if not isinstance(pre_install_commands, list):\n                message = f'Field `tool.hatch.envs.{self.name}.pre-install-commands` must be an array'\n                raise TypeError(message)\n\n            for i, command in enumerate(pre_install_commands, 1):\n                if not isinstance(command, str):\n                    message = (\n                        f'Command #{i} of field `tool.hatch.envs.{self.name}.pre-install-commands` must be a string'\n                    )\n                    raise TypeError(message)\n\n            self._pre_install_commands = list(pre_install_commands)\n\n        return self._pre_install_commands\n\n    @property\n    def post_install_commands(self):\n        if self._post_install_commands is None:\n            post_install_commands = self.config.get('post-install-commands', [])\n            if not isinstance(post_install_commands, list):\n                message = f'Field `tool.hatch.envs.{self.name}.post-install-commands` must be an array'\n                raise TypeError(message)\n\n            for i, command in enumerate(post_install_commands, 1):\n                if not isinstance(command, str):\n                    message = (\n                        f'Command #{i} of field `tool.hatch.envs.{self.name}.post-install-commands` must be a string'\n                    )\n                    raise TypeError(message)\n\n            self._post_install_commands = list(post_install_commands)\n\n        return self._post_install_commands\n\n    def activate(self):\n        \"\"\"\n        A convenience method called when using the environment as a context manager:\n\n        ```python\n        with environment: ...\n        ```\n        \"\"\"\n\n    def deactivate(self):\n        \"\"\"\n        A convenience method called after using the environment as a context manager:\n\n        ```python\n        with environment: ...\n        ```\n        \"\"\"\n\n    @abstractmethod\n    def find(self):\n        \"\"\"\n        :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n        This should return information about how to locate the environment or represent its ID in\n        some way. Additionally, this is expected to return something even if the environment is\n        [incompatible](reference.md#hatch.env.plugin.interface.EnvironmentInterface.check_compatibility).\n        \"\"\"\n\n    @abstractmethod\n    def create(self):\n        \"\"\"\n        :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n        This should perform the necessary steps to set up the environment.\n        \"\"\"\n\n    @abstractmethod\n    def remove(self):\n        \"\"\"\n        :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n        This should perform the necessary steps to completely remove the environment from the system and will only\n        be triggered manually by users with the [`env remove`](../../cli/reference.md#hatch-env-remove) or\n        [`env prune`](../../cli/reference.md#hatch-env-prune) commands.\n\n        If the\n        [build environment](reference.md#hatch.env.plugin.interface.EnvironmentInterface.build_environment)\n        has a caching mechanism, this should remove that as well.\n        \"\"\"\n\n    @abstractmethod\n    def exists(self) -> bool:\n        \"\"\"\n        :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n        This should indicate whether or not the environment has already been created.\n        \"\"\"\n\n    @abstractmethod\n    def install_project(self):\n        \"\"\"\n        :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n        This should install the project in the environment.\n        \"\"\"\n\n    @abstractmethod\n    def install_project_dev_mode(self):\n        \"\"\"\n        :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n        This should install the project in the environment such that the environment\n        always reflects the current state of the project.\n        \"\"\"\n\n    @abstractmethod\n    def dependencies_in_sync(self) -> bool:\n        \"\"\"\n        :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n        This should indicate whether or not the environment is compatible with the current\n        [dependencies](reference.md#hatch.env.plugin.interface.EnvironmentInterface.dependencies).\n        \"\"\"\n\n    @abstractmethod\n    def sync_dependencies(self):\n        \"\"\"\n        :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n        This should install the\n        [dependencies](reference.md#hatch.env.plugin.interface.EnvironmentInterface.dependencies)\n        in the environment.\n        \"\"\"\n\n    def dependency_hash(self):\n        \"\"\"\n        This should return a hash of the environment's\n        [dependencies](reference.md#hatch.env.plugin.interface.EnvironmentInterface.dependencies)\n        and any other data that is handled by the\n        [sync_dependencies](reference.md#hatch.env.plugin.interface.EnvironmentInterface.sync_dependencies)\n        and\n        [dependencies_in_sync](reference.md#hatch.env.plugin.interface.EnvironmentInterface.dependencies_in_sync)\n        methods.\n        \"\"\"\n        from hatch.utils.dep import hash_dependencies\n\n        return hash_dependencies(self.dependencies_complex)\n\n    @contextmanager\n    def build_environment(\n        self,\n        dependencies: list[str],  # noqa: ARG002\n    ):\n        \"\"\"\n        This should set up an isolated environment in which to [`build`](../../cli/reference.md#hatch-build) the project\n        given a set of dependencies and must be a context manager:\n\n        ```python\n        with environment.build_environment([...]): ...\n        ```\n\n        The build environment should reflect any\n        [environment variables](reference.md#hatch.env.plugin.interface.EnvironmentInterface.get_env_vars)\n        the user defined either currently or at the time of\n        [creation](reference.md#hatch.env.plugin.interface.EnvironmentInterface.create).\n        \"\"\"\n        with self.get_env_vars():\n            yield\n\n    def run_builder(\n        self,\n        build_environment,  # noqa: ARG002\n        **kwargs,\n    ):\n        \"\"\"\n        This will be called when the\n        [build environment](reference.md#hatch.env.plugin.interface.EnvironmentInterface.build_environment)\n        is active:\n\n        ```python\n        with environment.build_environment([...]) as build_env:\n            process = environment.run_builder(build_env, ...)\n        ```\n\n        This should return the standard library's\n        [subprocess.CompletedProcess](https://docs.python.org/3/library/subprocess.html#subprocess.CompletedProcess).\n        The command is constructed by passing all keyword arguments to\n        [construct_build_command](reference.md#hatch.env.plugin.interface.EnvironmentInterface.construct_build_command).\n\n        For an example, open the default implementation below:\n        \"\"\"\n        return self.platform.run_command(self.construct_build_command(**kwargs))\n\n    def build_environment_exists(self):  # noqa: PLR6301\n        \"\"\"\n        If the\n        [build environment](reference.md#hatch.env.plugin.interface.EnvironmentInterface.build_environment)\n        has a caching mechanism, this should indicate whether or not it has already been created.\n        \"\"\"\n        return False\n\n    def enter_shell(\n        self,\n        name: str,  # noqa: ARG002\n        path: str,\n        args: Iterable[str],\n    ):\n        \"\"\"\n        Spawn a [shell](../../config/hatch.md#shell) within the environment.\n\n        This should either use\n        [command_context](reference.md#hatch.env.plugin.interface.EnvironmentInterface.command_context)\n        directly or provide the same guarantee.\n        \"\"\"\n        with self.command_context():\n            self.platform.exit_with_command([path, *args])\n\n    def run_shell_command(self, command: str, **kwargs):\n        \"\"\"\n        This should return the standard library's\n        [subprocess.CompletedProcess](https://docs.python.org/3/library/subprocess.html#subprocess.CompletedProcess)\n        and will always be called when the\n        [command_context](reference.md#hatch.env.plugin.interface.EnvironmentInterface.command_context)\n        is active, with the expectation of providing the same guarantee.\n        \"\"\"\n        kwargs.setdefault('shell', True)\n        return self.platform.run_command(command, **kwargs)\n\n    @contextmanager\n    def command_context(self):\n        \"\"\"\n        A context manager that when active should make executed shell commands reflect any\n        [environment variables](reference.md#hatch.env.plugin.interface.EnvironmentInterface.get_env_vars)\n        the user defined either currently or at the time of\n        [creation](reference.md#hatch.env.plugin.interface.EnvironmentInterface.create).\n\n        For an example, open the default implementation below:\n        \"\"\"\n        with self.get_env_vars():\n            yield\n\n    def resolve_commands(self, commands: list[str]):\n        \"\"\"\n        This expands each command into one or more commands based on any\n        [scripts](../../config/environment/overview.md#scripts) that the user defined.\n        \"\"\"\n        for command in commands:\n            yield from self.expand_command(command)\n\n    def expand_command(self, command):\n        possible_script, args, _ignore_exit_code = parse_script_command(command)\n\n        # Indicate undefined\n        if not args:\n            args = None\n\n        with self.apply_context():\n            if possible_script in self.scripts:\n                for cmd in self.scripts[possible_script]:\n                    yield self.metadata.context.format(cmd, args=args).strip()\n            else:\n                yield self.metadata.context.format(command, args=args).strip()\n\n    def construct_build_command(  # noqa: PLR6301\n        self,\n        *,\n        directory=None,\n        targets=(),\n        hooks_only=False,\n        no_hooks=False,\n        clean=False,\n        clean_hooks_after=False,\n        clean_only=False,\n    ):\n        \"\"\"\n        This is the canonical way [`build`](../../cli/reference.md#hatch-build) command options are translated to\n        a subprocess command issued to [builders](../builder/reference.md).\n        \"\"\"\n        command = ['python', '-u', '-m', 'hatchling', 'build']\n\n        if directory:\n            command.extend(('--directory', directory))\n\n        if targets:\n            for target in targets:\n                command.extend(('--target', target))\n\n        if hooks_only:\n            command.append('--hooks-only')\n\n        if no_hooks:\n            command.append('--no-hooks')\n\n        if clean:\n            command.append('--clean')\n\n        if clean_hooks_after:\n            command.append('--clean-hooks-after')\n\n        if clean_only:\n            command.append('--clean-only')\n\n        return command\n\n    def construct_pip_install_command(self, args: list[str]):\n        \"\"\"\n        A convenience method for constructing a [`pip install`](https://pip.pypa.io/en/stable/cli/pip_install/)\n        command with the given verbosity. The default verbosity is set to one less than Hatch's verbosity.\n        \"\"\"\n        command = ['python', '-u', '-m', 'pip', 'install', '--disable-pip-version-check', '--no-python-version-warning']\n\n        # Default to -1 verbosity\n        add_verbosity_flag(command, self.verbosity, adjustment=-1)\n\n        command.extend(args)\n        return command\n\n    def join_command_args(self, args: list[str]):\n        \"\"\"\n        This is used by the [`run`](../../cli/reference.md#hatch-run) command to construct the root command string\n        from the received arguments.\n        \"\"\"\n        return self.platform.join_command_args(args)\n\n    def apply_features(self, requirement: str):\n        \"\"\"\n        A convenience method that applies any user defined [features](../../config/environment/overview.md#features)\n        to the given requirement.\n        \"\"\"\n        if self.features:\n            features = ','.join(self.features)\n            return f'{requirement}[{features}]'\n\n        return requirement\n\n    def check_compatibility(self):\n        \"\"\"\n        This raises an exception if the environment is not compatible with the user's setup. The default behavior\n        checks for [platform compatibility](../../config/environment/overview.md#supported-platforms)\n        and any method override should keep this check.\n\n        This check is never performed if the environment has been\n        [created](reference.md#hatch.env.plugin.interface.EnvironmentInterface.create).\n        \"\"\"\n        if self.platforms and self.platform.name not in self.platforms:\n            message = 'unsupported platform'\n            raise OSError(message)\n\n    def get_env_vars(self) -> EnvVars:\n        \"\"\"\n        Returns a mapping of environment variables that should be available to the environment. The object can\n        be used as a context manager to temporarily apply the environment variables to the current process.\n\n        !!! note\n            The environment variable `HATCH_ENV_ACTIVE` will always be set to the name of the environment.\n        \"\"\"\n        return EnvVars(self.env_vars, self.env_include, self.env_exclude)\n\n    def get_env_var_option(self, option: str) -> str:\n        \"\"\"\n        Returns the value of the upper-cased environment variable `HATCH_ENV_TYPE_<PLUGIN_NAME>_<option>`.\n        \"\"\"\n        return os.environ.get(f'{AppEnvVars.ENV_OPTION_PREFIX}{self.PLUGIN_NAME}_{option}'.upper(), '')\n\n    def get_context(self):\n        \"\"\"\n        Returns a subclass of\n        [EnvironmentContextFormatter](../utilities.md#hatch.env.context.EnvironmentContextFormatter).\n        \"\"\"\n        from hatch.env.context import EnvironmentContextFormatter\n\n        return EnvironmentContextFormatter(self)\n\n    @staticmethod\n    def get_option_types() -> dict:\n        \"\"\"\n        Returns a mapping of supported options to their respective types so that they can be used by\n        [overrides](../../config/environment/advanced.md#option-overrides).\n        \"\"\"\n        return {}\n\n    @contextmanager\n    def apply_context(self):\n        with self.get_env_vars(), self.metadata.context.apply_context(self.context):\n            yield\n\n    def __enter__(self):\n        self.activate()\n        return self\n\n    def __exit__(self, exc_type, exc_value, traceback):\n        self.deactivate()\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.PLUGIN_NAME","title":"PLUGIN_NAME = '' class-attribute instance-attribute","text":"

The name used for selection.

"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.app","title":"app property","text":"

An instance of Application.

"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.root","title":"root property","text":"

The root of the project tree as a path-like object.

"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.name","title":"name: str property","text":"

The name of the environment.

"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.data_directory","title":"data_directory property","text":"

The directory this plugin should use for storage as a path-like object. If the user has not configured one then this will be the same as the isolated data directory.

"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.isolated_data_directory","title":"isolated_data_directory property","text":"

The default directory reserved exclusively for this plugin as a path-like object.

"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.config","title":"config: dict property","text":"pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\n
[envs.<ENV_NAME>]\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.platform","title":"platform property","text":"

An instance of Platform.

"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.environment_dependencies","title":"environment_dependencies: list[str] property","text":"

The list of all environment dependencies.

"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.dependencies","title":"dependencies: list[str] property","text":"

The list of all project dependencies (if installed and in dev mode), selected optional dependencies, and environment dependencies.

"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.env_vars","title":"env_vars: dict property","text":"pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>.env-vars]\n
[envs.<ENV_NAME>.env-vars]\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.env_include","title":"env_include: list[str] property","text":"pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\nenv-include = [...]\n
[envs.<ENV_NAME>]\nenv-include = [...]\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.env_exclude","title":"env_exclude: list[str] property","text":"pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\nenv-exclude = [...]\n
[envs.<ENV_NAME>]\nenv-exclude = [...]\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.platforms","title":"platforms: list[str] property","text":"

All names are stored as their lower-cased version.

pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\nplatforms = [...]\n
[envs.<ENV_NAME>]\nplatforms = [...]\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.skip_install","title":"skip_install: bool property","text":"pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\nskip-install = ...\n
[envs.<ENV_NAME>]\nskip-install = ...\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.dev_mode","title":"dev_mode: bool property","text":"pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\ndev-mode = ...\n
[envs.<ENV_NAME>]\ndev-mode = ...\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.description","title":"description: str property","text":"pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\ndescription = ...\n
[envs.<ENV_NAME>]\ndescription = ...\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.activate","title":"activate()","text":"

A convenience method called when using the environment as a context manager:

with environment: ...\n
Source code in src/hatch/env/plugin/interface.py 
def activate(self):\n    \"\"\"\n    A convenience method called when using the environment as a context manager:\n\n    ```python\n    with environment: ...\n    ```\n    \"\"\"\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.deactivate","title":"deactivate()","text":"

A convenience method called after using the environment as a context manager:

with environment: ...\n
Source code in src/hatch/env/plugin/interface.py 
def deactivate(self):\n    \"\"\"\n    A convenience method called after using the environment as a context manager:\n\n    ```python\n    with environment: ...\n    ```\n    \"\"\"\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.find","title":"find() abstractmethod","text":"

REQUIRED

This should return information about how to locate the environment or represent its ID in some way. Additionally, this is expected to return something even if the environment is incompatible.

Source code in src/hatch/env/plugin/interface.py 
@abstractmethod\ndef find(self):\n    \"\"\"\n    :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n    This should return information about how to locate the environment or represent its ID in\n    some way. Additionally, this is expected to return something even if the environment is\n    [incompatible](reference.md#hatch.env.plugin.interface.EnvironmentInterface.check_compatibility).\n    \"\"\"\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.create","title":"create() abstractmethod","text":"

REQUIRED

This should perform the necessary steps to set up the environment.

Source code in src/hatch/env/plugin/interface.py 
@abstractmethod\ndef create(self):\n    \"\"\"\n    :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n    This should perform the necessary steps to set up the environment.\n    \"\"\"\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.remove","title":"remove() abstractmethod","text":"

REQUIRED

This should perform the necessary steps to completely remove the environment from the system and will only be triggered manually by users with the env remove or env prune commands.

If the build environment has a caching mechanism, this should remove that as well.

Source code in src/hatch/env/plugin/interface.py 
@abstractmethod\ndef remove(self):\n    \"\"\"\n    :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n    This should perform the necessary steps to completely remove the environment from the system and will only\n    be triggered manually by users with the [`env remove`](../../cli/reference.md#hatch-env-remove) or\n    [`env prune`](../../cli/reference.md#hatch-env-prune) commands.\n\n    If the\n    [build environment](reference.md#hatch.env.plugin.interface.EnvironmentInterface.build_environment)\n    has a caching mechanism, this should remove that as well.\n    \"\"\"\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.exists","title":"exists() -> bool abstractmethod","text":"

REQUIRED

This should indicate whether or not the environment has already been created.

Source code in src/hatch/env/plugin/interface.py 
@abstractmethod\ndef exists(self) -> bool:\n    \"\"\"\n    :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n    This should indicate whether or not the environment has already been created.\n    \"\"\"\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.install_project","title":"install_project() abstractmethod","text":"

REQUIRED

This should install the project in the environment.

Source code in src/hatch/env/plugin/interface.py 
@abstractmethod\ndef install_project(self):\n    \"\"\"\n    :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n    This should install the project in the environment.\n    \"\"\"\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.install_project_dev_mode","title":"install_project_dev_mode() abstractmethod","text":"

REQUIRED

This should install the project in the environment such that the environment always reflects the current state of the project.

Source code in src/hatch/env/plugin/interface.py 
@abstractmethod\ndef install_project_dev_mode(self):\n    \"\"\"\n    :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n    This should install the project in the environment such that the environment\n    always reflects the current state of the project.\n    \"\"\"\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.dependencies_in_sync","title":"dependencies_in_sync() -> bool abstractmethod","text":"

REQUIRED

This should indicate whether or not the environment is compatible with the current dependencies.

Source code in src/hatch/env/plugin/interface.py 
@abstractmethod\ndef dependencies_in_sync(self) -> bool:\n    \"\"\"\n    :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n    This should indicate whether or not the environment is compatible with the current\n    [dependencies](reference.md#hatch.env.plugin.interface.EnvironmentInterface.dependencies).\n    \"\"\"\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.sync_dependencies","title":"sync_dependencies() abstractmethod","text":"

REQUIRED

This should install the dependencies in the environment.

Source code in src/hatch/env/plugin/interface.py 
@abstractmethod\ndef sync_dependencies(self):\n    \"\"\"\n    :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n    This should install the\n    [dependencies](reference.md#hatch.env.plugin.interface.EnvironmentInterface.dependencies)\n    in the environment.\n    \"\"\"\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.dependency_hash","title":"dependency_hash()","text":"

This should return a hash of the environment's dependencies and any other data that is handled by the sync_dependencies and dependencies_in_sync methods.

Source code in src/hatch/env/plugin/interface.py 
def dependency_hash(self):\n    \"\"\"\n    This should return a hash of the environment's\n    [dependencies](reference.md#hatch.env.plugin.interface.EnvironmentInterface.dependencies)\n    and any other data that is handled by the\n    [sync_dependencies](reference.md#hatch.env.plugin.interface.EnvironmentInterface.sync_dependencies)\n    and\n    [dependencies_in_sync](reference.md#hatch.env.plugin.interface.EnvironmentInterface.dependencies_in_sync)\n    methods.\n    \"\"\"\n    from hatch.utils.dep import hash_dependencies\n\n    return hash_dependencies(self.dependencies_complex)\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.build_environment","title":"build_environment(dependencies: list[str])","text":"

This should set up an isolated environment in which to build the project given a set of dependencies and must be a context manager:

with environment.build_environment([...]): ...\n

The build environment should reflect any environment variables the user defined either currently or at the time of creation.

Source code in src/hatch/env/plugin/interface.py 
@contextmanager\ndef build_environment(\n    self,\n    dependencies: list[str],  # noqa: ARG002\n):\n    \"\"\"\n    This should set up an isolated environment in which to [`build`](../../cli/reference.md#hatch-build) the project\n    given a set of dependencies and must be a context manager:\n\n    ```python\n    with environment.build_environment([...]): ...\n    ```\n\n    The build environment should reflect any\n    [environment variables](reference.md#hatch.env.plugin.interface.EnvironmentInterface.get_env_vars)\n    the user defined either currently or at the time of\n    [creation](reference.md#hatch.env.plugin.interface.EnvironmentInterface.create).\n    \"\"\"\n    with self.get_env_vars():\n        yield\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.build_environment_exists","title":"build_environment_exists()","text":"

If the build environment has a caching mechanism, this should indicate whether or not it has already been created.

Source code in src/hatch/env/plugin/interface.py 
def build_environment_exists(self):  # noqa: PLR6301\n    \"\"\"\n    If the\n    [build environment](reference.md#hatch.env.plugin.interface.EnvironmentInterface.build_environment)\n    has a caching mechanism, this should indicate whether or not it has already been created.\n    \"\"\"\n    return False\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.run_builder","title":"run_builder(build_environment, **kwargs)","text":"

This will be called when the build environment is active:

with environment.build_environment([...]) as build_env:\n    process = environment.run_builder(build_env, ...)\n

This should return the standard library's subprocess.CompletedProcess. The command is constructed by passing all keyword arguments to construct_build_command.

For an example, open the default implementation below:

Source code in src/hatch/env/plugin/interface.py 
def run_builder(\n    self,\n    build_environment,  # noqa: ARG002\n    **kwargs,\n):\n    \"\"\"\n    This will be called when the\n    [build environment](reference.md#hatch.env.plugin.interface.EnvironmentInterface.build_environment)\n    is active:\n\n    ```python\n    with environment.build_environment([...]) as build_env:\n        process = environment.run_builder(build_env, ...)\n    ```\n\n    This should return the standard library's\n    [subprocess.CompletedProcess](https://docs.python.org/3/library/subprocess.html#subprocess.CompletedProcess).\n    The command is constructed by passing all keyword arguments to\n    [construct_build_command](reference.md#hatch.env.plugin.interface.EnvironmentInterface.construct_build_command).\n\n    For an example, open the default implementation below:\n    \"\"\"\n    return self.platform.run_command(self.construct_build_command(**kwargs))\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.construct_build_command","title":"construct_build_command(*, directory=None, targets=(), hooks_only=False, no_hooks=False, clean=False, clean_hooks_after=False, clean_only=False)","text":"

This is the canonical way build command options are translated to a subprocess command issued to builders.

Source code in src/hatch/env/plugin/interface.py 
def construct_build_command(  # noqa: PLR6301\n    self,\n    *,\n    directory=None,\n    targets=(),\n    hooks_only=False,\n    no_hooks=False,\n    clean=False,\n    clean_hooks_after=False,\n    clean_only=False,\n):\n    \"\"\"\n    This is the canonical way [`build`](../../cli/reference.md#hatch-build) command options are translated to\n    a subprocess command issued to [builders](../builder/reference.md).\n    \"\"\"\n    command = ['python', '-u', '-m', 'hatchling', 'build']\n\n    if directory:\n        command.extend(('--directory', directory))\n\n    if targets:\n        for target in targets:\n            command.extend(('--target', target))\n\n    if hooks_only:\n        command.append('--hooks-only')\n\n    if no_hooks:\n        command.append('--no-hooks')\n\n    if clean:\n        command.append('--clean')\n\n    if clean_hooks_after:\n        command.append('--clean-hooks-after')\n\n    if clean_only:\n        command.append('--clean-only')\n\n    return command\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.command_context","title":"command_context()","text":"

A context manager that when active should make executed shell commands reflect any environment variables the user defined either currently or at the time of creation.

For an example, open the default implementation below:

Source code in src/hatch/env/plugin/interface.py 
@contextmanager\ndef command_context(self):\n    \"\"\"\n    A context manager that when active should make executed shell commands reflect any\n    [environment variables](reference.md#hatch.env.plugin.interface.EnvironmentInterface.get_env_vars)\n    the user defined either currently or at the time of\n    [creation](reference.md#hatch.env.plugin.interface.EnvironmentInterface.create).\n\n    For an example, open the default implementation below:\n    \"\"\"\n    with self.get_env_vars():\n        yield\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.enter_shell","title":"enter_shell(name: str, path: str, args: Iterable[str])","text":"

Spawn a shell within the environment.

This should either use command_context directly or provide the same guarantee.

Source code in src/hatch/env/plugin/interface.py 
def enter_shell(\n    self,\n    name: str,  # noqa: ARG002\n    path: str,\n    args: Iterable[str],\n):\n    \"\"\"\n    Spawn a [shell](../../config/hatch.md#shell) within the environment.\n\n    This should either use\n    [command_context](reference.md#hatch.env.plugin.interface.EnvironmentInterface.command_context)\n    directly or provide the same guarantee.\n    \"\"\"\n    with self.command_context():\n        self.platform.exit_with_command([path, *args])\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.run_shell_command","title":"run_shell_command(command: str, **kwargs)","text":"

This should return the standard library's subprocess.CompletedProcess and will always be called when the command_context is active, with the expectation of providing the same guarantee.

Source code in src/hatch/env/plugin/interface.py 
def run_shell_command(self, command: str, **kwargs):\n    \"\"\"\n    This should return the standard library's\n    [subprocess.CompletedProcess](https://docs.python.org/3/library/subprocess.html#subprocess.CompletedProcess)\n    and will always be called when the\n    [command_context](reference.md#hatch.env.plugin.interface.EnvironmentInterface.command_context)\n    is active, with the expectation of providing the same guarantee.\n    \"\"\"\n    kwargs.setdefault('shell', True)\n    return self.platform.run_command(command, **kwargs)\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.resolve_commands","title":"resolve_commands(commands: list[str])","text":"

This expands each command into one or more commands based on any scripts that the user defined.

Source code in src/hatch/env/plugin/interface.py 
def resolve_commands(self, commands: list[str]):\n    \"\"\"\n    This expands each command into one or more commands based on any\n    [scripts](../../config/environment/overview.md#scripts) that the user defined.\n    \"\"\"\n    for command in commands:\n        yield from self.expand_command(command)\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.get_env_vars","title":"get_env_vars() -> EnvVars","text":"

Returns a mapping of environment variables that should be available to the environment. The object can be used as a context manager to temporarily apply the environment variables to the current process.

Note

The environment variable HATCH_ENV_ACTIVE will always be set to the name of the environment.

Source code in src/hatch/env/plugin/interface.py 
def get_env_vars(self) -> EnvVars:\n    \"\"\"\n    Returns a mapping of environment variables that should be available to the environment. The object can\n    be used as a context manager to temporarily apply the environment variables to the current process.\n\n    !!! note\n        The environment variable `HATCH_ENV_ACTIVE` will always be set to the name of the environment.\n    \"\"\"\n    return EnvVars(self.env_vars, self.env_include, self.env_exclude)\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.apply_features","title":"apply_features(requirement: str)","text":"

A convenience method that applies any user defined features to the given requirement.

Source code in src/hatch/env/plugin/interface.py 
def apply_features(self, requirement: str):\n    \"\"\"\n    A convenience method that applies any user defined [features](../../config/environment/overview.md#features)\n    to the given requirement.\n    \"\"\"\n    if self.features:\n        features = ','.join(self.features)\n        return f'{requirement}[{features}]'\n\n    return requirement\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.construct_pip_install_command","title":"construct_pip_install_command(args: list[str])","text":"

A convenience method for constructing a pip install command with the given verbosity. The default verbosity is set to one less than Hatch's verbosity.

Source code in src/hatch/env/plugin/interface.py 
def construct_pip_install_command(self, args: list[str]):\n    \"\"\"\n    A convenience method for constructing a [`pip install`](https://pip.pypa.io/en/stable/cli/pip_install/)\n    command with the given verbosity. The default verbosity is set to one less than Hatch's verbosity.\n    \"\"\"\n    command = ['python', '-u', '-m', 'pip', 'install', '--disable-pip-version-check', '--no-python-version-warning']\n\n    # Default to -1 verbosity\n    add_verbosity_flag(command, self.verbosity, adjustment=-1)\n\n    command.extend(args)\n    return command\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.join_command_args","title":"join_command_args(args: list[str])","text":"

This is used by the run command to construct the root command string from the received arguments.

Source code in src/hatch/env/plugin/interface.py 
def join_command_args(self, args: list[str]):\n    \"\"\"\n    This is used by the [`run`](../../cli/reference.md#hatch-run) command to construct the root command string\n    from the received arguments.\n    \"\"\"\n    return self.platform.join_command_args(args)\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.check_compatibility","title":"check_compatibility()","text":"

This raises an exception if the environment is not compatible with the user's setup. The default behavior checks for platform compatibility and any method override should keep this check.

This check is never performed if the environment has been created.

Source code in src/hatch/env/plugin/interface.py 
def check_compatibility(self):\n    \"\"\"\n    This raises an exception if the environment is not compatible with the user's setup. The default behavior\n    checks for [platform compatibility](../../config/environment/overview.md#supported-platforms)\n    and any method override should keep this check.\n\n    This check is never performed if the environment has been\n    [created](reference.md#hatch.env.plugin.interface.EnvironmentInterface.create).\n    \"\"\"\n    if self.platforms and self.platform.name not in self.platforms:\n        message = 'unsupported platform'\n        raise OSError(message)\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.get_option_types","title":"get_option_types() -> dict staticmethod","text":"

Returns a mapping of supported options to their respective types so that they can be used by overrides.

Source code in src/hatch/env/plugin/interface.py 
@staticmethod\ndef get_option_types() -> dict:\n    \"\"\"\n    Returns a mapping of supported options to their respective types so that they can be used by\n    [overrides](../../config/environment/advanced.md#option-overrides).\n    \"\"\"\n    return {}\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.get_env_var_option","title":"get_env_var_option(option: str) -> str","text":"

Returns the value of the upper-cased environment variable HATCH_ENV_TYPE_<PLUGIN_NAME>_<option>.

Source code in src/hatch/env/plugin/interface.py 
def get_env_var_option(self, option: str) -> str:\n    \"\"\"\n    Returns the value of the upper-cased environment variable `HATCH_ENV_TYPE_<PLUGIN_NAME>_<option>`.\n    \"\"\"\n    return os.environ.get(f'{AppEnvVars.ENV_OPTION_PREFIX}{self.PLUGIN_NAME}_{option}'.upper(), '')\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.get_context","title":"get_context()","text":"

Returns a subclass of EnvironmentContextFormatter.

Source code in src/hatch/env/plugin/interface.py 
def get_context(self):\n    \"\"\"\n    Returns a subclass of\n    [EnvironmentContextFormatter](../utilities.md#hatch.env.context.EnvironmentContextFormatter).\n    \"\"\"\n    from hatch.env.context import EnvironmentContextFormatter\n\n    return EnvironmentContextFormatter(self)\n
"},{"location":"plugins/environment/virtual/","title":"Virtual environment","text":"

This uses virtual environments backed by the standard virtualenv tool.

"},{"location":"plugins/environment/virtual/#configuration","title":"Configuration","text":"

The environment plugin name is virtual.

pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\ntype = \"virtual\"\n
[envs.<ENV_NAME>]\ntype = \"virtual\"\n
"},{"location":"plugins/environment/virtual/#options","title":"Options","text":"Option Default Description python The version of Python to find on your system and subsequently use to create the environment, defaulting to the HATCH_PYTHON environment variable, followed by the normal resolution logic. Setting the HATCH_PYTHON environment variable to self will force the use of the Python executable Hatch is running on. For more information, see the documentation. python-sources ['external', 'internal'] This may be set to an array of strings that are either the literal internal or external. External considers only Python executables that are already on PATH. Internal considers only internally managed Python distributions. path An explicit path to the virtual environment. The path may be absolute or relative to the project root. Any environments that inherit this option will also use this path. The environment variable HATCH_ENV_TYPE_VIRTUAL_PATH may be used, which will take precedence. system-packages false Whether or not to give the virtual environment access to the system site-packages directory"},{"location":"plugins/environment/virtual/#location","title":"Location","text":"

The location of environments is determined in the following heuristic order:

  1. The path option
  2. A directory named after the environment within the configured virtual environment directory if the directory resides somewhere within the project root or if it is set to a .virtualenvs directory within the user's home directory
  3. Otherwise, environments are stored within the configured virtual environment directory in a deeply nested structure in order to support multiple projects

Additionally, when the path option is not used, the name of the directory for the default environment will be the normalized project name to provide a more meaningful default shell prompt.

"},{"location":"plugins/environment/virtual/#python-resolution","title":"Python resolution","text":"

Virtual environments necessarily require a parent installation of Python. The following rules determine how the parent is resolved.

The Python choice is determined by the python option followed by the HATCH_PYTHON environment variable. If the choice is via the environment variable, then resolution stops and that path is used unconditionally.

The resolvers will be based on the python-sources option and all resolved interpreters will ensure compatibility with the project's defined Python support.

If a Python version has been chosen then each resolver will try to find an interpreter that satisfies that version.

If no version has been chosen, then each resolver will try to find a version that matches the version of Python that Hatch is currently running on. If not found then each resolver will try to find the highest compatible version.

Note

Some external Python paths are considered unstable and are ignored during resolution. For example, if Hatch is installed via Homebrew then sys.executable will be ignored because the interpreter could change or be removed at any time.

Note

When resolution finds a match using an internally managed distribution and an update is available, the latest distribution will automatically be downloaded before environment creation.

"},{"location":"plugins/environment/virtual/#internal-distributions","title":"Internal distributions","text":"

The following options are recognized for internal Python resolution.

"},{"location":"plugins/environment/virtual/#cpython","title":"CPython","text":"ID 3.7 3.8 3.9 3.10 3.11 3.12

The source of distributions is the python-build-standalone project.

Some distributions have variants that may be configured with the HATCH_PYTHON_VARIANT_<PLATFORM> environment variable where <PLATFORM> is the uppercase version of one of the following:

Platform Options Linux Windows "},{"location":"plugins/environment/virtual/#pypy","title":"PyPy","text":"ID pypy2.7 pypy3.9 pypy3.10

The source of distributions is the PyPy project.

"},{"location":"plugins/environment/virtual/#troubleshooting","title":"Troubleshooting","text":""},{"location":"plugins/environment/virtual/#macos-sip","title":"macOS SIP","text":"

If you need to set linker environment variables like those starting with DYLD_ or LD_, any executable secured by System Integrity Protection that is invoked when running commands will not see those environment variable modifications as macOS strips those.

Hatch interprets such commands as shell commands but deliberately ignores such paths to protected shells. This workaround suffices for the majority of use cases but there are 2 situations in which it may not:

  1. There are no unprotected sh, bash, zsh, nor fish executables found along PATH.
  2. The desired executable is a project's script, and the location of environments contains spaces or is longer than 1241 characters. In this case pip and other installers will create such an entry point with a shebang pointing to /bin/sh (which is protected) to avoid shebang limitations. Rather than changing the location, you could invoke the script as e.g. python -m pytest (if the project supports that method of invocation by shipping a __main__.py).

  1. The shebang length limit is usually 127 but 3 characters surround the executable path: #!<EXE_PATH>\\n \u21a9

"},{"location":"plugins/environment-collector/custom/","title":"Custom environment collector","text":"

This is a custom class in a given Python file that inherits from the EnvironmentCollectorInterface.

"},{"location":"plugins/environment-collector/custom/#configuration","title":"Configuration","text":"

The environment collector plugin name is custom.

pyproject.toml hatch.toml 
[tool.hatch.env.collectors.custom]\n
[env.collectors.custom]\n
"},{"location":"plugins/environment-collector/custom/#options","title":"Options","text":"Option Default Description path hatch_plugins.py The path of the Python file"},{"location":"plugins/environment-collector/custom/#example","title":"Example","text":"hatch_plugins.py 
    from hatch.env.collectors.plugin.interface import EnvironmentCollectorInterface\n\n\n    class CustomEnvironmentCollector(EnvironmentCollectorInterface):\n        ...\n

If multiple subclasses are found, you must define a function named get_environment_collector that returns the desired environment collector.

Note

Any defined PLUGIN_NAME is ignored and will always be custom.

"},{"location":"plugins/environment-collector/default/","title":"Default environment collector","text":"

This adds the default environment with type set to virtual and will always be applied.

"},{"location":"plugins/environment-collector/default/#configuration","title":"Configuration","text":"

The environment collector plugin name is default.

pyproject.toml hatch.toml 
[tool.hatch.env.collectors.default]\n
[env.collectors.default]\n
"},{"location":"plugins/environment-collector/default/#options","title":"Options","text":"

There are no options available currently.

"},{"location":"plugins/environment-collector/reference/","title":"Environment collector plugins","text":"

Environment collectors allow for dynamically modifying environments or adding environments beyond those defined in config. Users can override default values provided by each environment.

"},{"location":"plugins/environment-collector/reference/#known-third-party","title":"Known third-party","text":""},{"location":"plugins/environment-collector/reference/#installation","title":"Installation","text":"

Any required environment collectors that are not built-in must be manually installed alongside Hatch or listed in the tool.hatch.env.requires array for automatic management:

pyproject.toml hatch.toml 
[tool.hatch.env]\nrequires = [\n  \"...\",\n]\n
[env]\nrequires = [\n  \"...\",\n]\n
"},{"location":"plugins/environment-collector/reference/#hatch.env.collectors.plugin.interface.EnvironmentCollectorInterface","title":"EnvironmentCollectorInterface","text":"

Example usage:

plugin.py hooks.py 
    from hatch.env.collectors.plugin.interface import EnvironmentCollectorInterface\n\n\n    class SpecialEnvironmentCollector(EnvironmentCollectorInterface):\n        PLUGIN_NAME = 'special'\n        ...\n
    from hatchling.plugin import hookimpl\n\n    from .plugin import SpecialEnvironmentCollector\n\n\n    @hookimpl\n    def hatch_register_environment_collector():\n        return SpecialEnvironmentCollector\n
Source code in src/hatch/env/collectors/plugin/interface.py 
class EnvironmentCollectorInterface:\n    \"\"\"\n    Example usage:\n\n    ```python tab=\"plugin.py\"\n        from hatch.env.collectors.plugin.interface import EnvironmentCollectorInterface\n\n\n        class SpecialEnvironmentCollector(EnvironmentCollectorInterface):\n            PLUGIN_NAME = 'special'\n            ...\n    ```\n\n    ```python tab=\"hooks.py\"\n        from hatchling.plugin import hookimpl\n\n        from .plugin import SpecialEnvironmentCollector\n\n\n        @hookimpl\n        def hatch_register_environment_collector():\n            return SpecialEnvironmentCollector\n    ```\n    \"\"\"\n\n    PLUGIN_NAME = ''\n    \"\"\"The name used for selection.\"\"\"\n\n    def __init__(self, root, config):\n        self.__root = root\n        self.__config = config\n\n    @property\n    def root(self):\n        \"\"\"\n        The root of the project tree as a path-like object.\n        \"\"\"\n        return self.__root\n\n    @property\n    def config(self) -> dict:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.env.collectors.<PLUGIN_NAME>]\n        ```\n        \"\"\"\n        return self.__config\n\n    def get_initial_config(self) -> dict[str, dict]:  # noqa: PLR6301\n        \"\"\"\n        Returns configuration for environments keyed by the environment or matrix name.\n        \"\"\"\n        return {}\n\n    def finalize_config(self, config: dict[str, dict]):\n        \"\"\"\n        Finalizes configuration for environments keyed by the environment or matrix name. This will override\n        any user-defined settings and any collectors that ran before this call.\n\n        This is called before matrices are turned into concrete environments.\n        \"\"\"\n\n    def finalize_environments(self, config: dict[str, dict]):\n        \"\"\"\n        Finalizes configuration for environments keyed by the environment name. This will override\n        any user-defined settings and any collectors that ran before this call.\n\n        This is called after matrices are turned into concrete environments.\n        \"\"\"\n
"},{"location":"plugins/environment-collector/reference/#hatch.env.collectors.plugin.interface.EnvironmentCollectorInterface.PLUGIN_NAME","title":"PLUGIN_NAME = '' class-attribute instance-attribute","text":"

The name used for selection.

"},{"location":"plugins/environment-collector/reference/#hatch.env.collectors.plugin.interface.EnvironmentCollectorInterface.root","title":"root property","text":"

The root of the project tree as a path-like object.

"},{"location":"plugins/environment-collector/reference/#hatch.env.collectors.plugin.interface.EnvironmentCollectorInterface.config","title":"config: dict property","text":"pyproject.toml hatch.toml 
[tool.hatch.env.collectors.<PLUGIN_NAME>]\n
[env.collectors.<PLUGIN_NAME>]\n
"},{"location":"plugins/environment-collector/reference/#hatch.env.collectors.plugin.interface.EnvironmentCollectorInterface.get_initial_config","title":"get_initial_config() -> dict[str, dict]","text":"

Returns configuration for environments keyed by the environment or matrix name.

Source code in src/hatch/env/collectors/plugin/interface.py 
def get_initial_config(self) -> dict[str, dict]:  # noqa: PLR6301\n    \"\"\"\n    Returns configuration for environments keyed by the environment or matrix name.\n    \"\"\"\n    return {}\n
"},{"location":"plugins/environment-collector/reference/#hatch.env.collectors.plugin.interface.EnvironmentCollectorInterface.finalize_config","title":"finalize_config(config: dict[str, dict])","text":"

Finalizes configuration for environments keyed by the environment or matrix name. This will override any user-defined settings and any collectors that ran before this call.

This is called before matrices are turned into concrete environments.

Source code in src/hatch/env/collectors/plugin/interface.py 
def finalize_config(self, config: dict[str, dict]):\n    \"\"\"\n    Finalizes configuration for environments keyed by the environment or matrix name. This will override\n    any user-defined settings and any collectors that ran before this call.\n\n    This is called before matrices are turned into concrete environments.\n    \"\"\"\n
"},{"location":"plugins/environment-collector/reference/#hatch.env.collectors.plugin.interface.EnvironmentCollectorInterface.finalize_environments","title":"finalize_environments(config: dict[str, dict])","text":"

Finalizes configuration for environments keyed by the environment name. This will override any user-defined settings and any collectors that ran before this call.

This is called after matrices are turned into concrete environments.

Source code in src/hatch/env/collectors/plugin/interface.py 
def finalize_environments(self, config: dict[str, dict]):\n    \"\"\"\n    Finalizes configuration for environments keyed by the environment name. This will override\n    any user-defined settings and any collectors that ran before this call.\n\n    This is called after matrices are turned into concrete environments.\n    \"\"\"\n
"},{"location":"plugins/metadata-hook/custom/","title":"Custom metadata hook","text":"

This is a custom class in a given Python file that inherits from the MetadataHookInterface.

"},{"location":"plugins/metadata-hook/custom/#configuration","title":"Configuration","text":"

The metadata hook plugin name is custom.

pyproject.toml hatch.toml 
[tool.hatch.metadata.hooks.custom]\n
[metadata.hooks.custom]\n
"},{"location":"plugins/metadata-hook/custom/#options","title":"Options","text":"Option Default Description path hatch_build.py The path of the Python file"},{"location":"plugins/metadata-hook/custom/#example","title":"Example","text":"hatch_build.py 
    from hatchling.metadata.plugin.interface import MetadataHookInterface\n\n\n    class CustomMetadataHook(MetadataHookInterface):\n        ...\n

If multiple subclasses are found, you must define a function named get_metadata_hook that returns the desired build hook.

Note

Any defined PLUGIN_NAME is ignored and will always be custom.

"},{"location":"plugins/metadata-hook/reference/","title":"Metadata hook plugins","text":"

Metadata hooks allow for the modification of project metadata after it has been loaded.

"},{"location":"plugins/metadata-hook/reference/#known-third-party","title":"Known third-party","text":""},{"location":"plugins/metadata-hook/reference/#hatchling.metadata.plugin.interface.MetadataHookInterface","title":"MetadataHookInterface","text":"

Example usage:

plugin.py hooks.py 
from hatchling.metadata.plugin.interface import MetadataHookInterface\n\n\nclass SpecialMetadataHook(MetadataHookInterface):\n    PLUGIN_NAME = 'special'\n    ...\n
from hatchling.plugin import hookimpl\n\nfrom .plugin import SpecialMetadataHook\n\n\n@hookimpl\ndef hatch_register_metadata_hook():\n    return SpecialMetadataHook\n
Source code in backend/src/hatchling/metadata/plugin/interface.py 
class MetadataHookInterface(ABC):  # no cov\n    \"\"\"\n    Example usage:\n\n    ```python tab=\"plugin.py\"\n    from hatchling.metadata.plugin.interface import MetadataHookInterface\n\n\n    class SpecialMetadataHook(MetadataHookInterface):\n        PLUGIN_NAME = 'special'\n        ...\n    ```\n\n    ```python tab=\"hooks.py\"\n    from hatchling.plugin import hookimpl\n\n    from .plugin import SpecialMetadataHook\n\n\n    @hookimpl\n    def hatch_register_metadata_hook():\n        return SpecialMetadataHook\n    ```\n    \"\"\"\n\n    PLUGIN_NAME = ''\n    \"\"\"The name used for selection.\"\"\"\n\n    def __init__(self, root: str, config: dict) -> None:\n        self.__root = root\n        self.__config = config\n\n    @property\n    def root(self) -> str:\n        \"\"\"\n        The root of the project tree.\n        \"\"\"\n        return self.__root\n\n    @property\n    def config(self) -> dict:\n        \"\"\"\n        The hook configuration.\n\n        ```toml config-example\n        [tool.hatch.metadata.hooks.<PLUGIN_NAME>]\n        ```\n        \"\"\"\n        return self.__config\n\n    @abstractmethod\n    def update(self, metadata: dict) -> None:\n        \"\"\"\n        This updates the metadata mapping of the `project` table in-place.\n        \"\"\"\n\n    def get_known_classifiers(self) -> list[str]:  # noqa: PLR6301\n        \"\"\"\n        This returns extra classifiers that should be considered valid in addition to the ones known to PyPI.\n        \"\"\"\n        return []\n
"},{"location":"plugins/metadata-hook/reference/#hatchling.metadata.plugin.interface.MetadataHookInterface.PLUGIN_NAME","title":"PLUGIN_NAME = '' class-attribute instance-attribute","text":"

The name used for selection.

"},{"location":"plugins/metadata-hook/reference/#hatchling.metadata.plugin.interface.MetadataHookInterface.root","title":"root: str property","text":"

The root of the project tree.

"},{"location":"plugins/metadata-hook/reference/#hatchling.metadata.plugin.interface.MetadataHookInterface.config","title":"config: dict property","text":"

The hook configuration.

pyproject.toml hatch.toml 
[tool.hatch.metadata.hooks.<PLUGIN_NAME>]\n
[metadata.hooks.<PLUGIN_NAME>]\n
"},{"location":"plugins/metadata-hook/reference/#hatchling.metadata.plugin.interface.MetadataHookInterface.update","title":"update(metadata: dict) -> None abstractmethod","text":"

This updates the metadata mapping of the project table in-place.

Source code in backend/src/hatchling/metadata/plugin/interface.py 
@abstractmethod\ndef update(self, metadata: dict) -> None:\n    \"\"\"\n    This updates the metadata mapping of the `project` table in-place.\n    \"\"\"\n
"},{"location":"plugins/metadata-hook/reference/#hatchling.metadata.plugin.interface.MetadataHookInterface.get_known_classifiers","title":"get_known_classifiers() -> list[str]","text":"

This returns extra classifiers that should be considered valid in addition to the ones known to PyPI.

Source code in backend/src/hatchling/metadata/plugin/interface.py 
def get_known_classifiers(self) -> list[str]:  # noqa: PLR6301\n    \"\"\"\n    This returns extra classifiers that should be considered valid in addition to the ones known to PyPI.\n    \"\"\"\n    return []\n
"},{"location":"plugins/publisher/package-index/","title":"Index publisher","text":"

See the documentation for publishing.

"},{"location":"plugins/publisher/package-index/#configuration","title":"Configuration","text":"

The publisher plugin name is index.

config.toml 
[publish.index]\n
"},{"location":"plugins/publisher/package-index/#options","title":"Options","text":"Flag Config name Description -r/--repo repo The repository with which to publish artifacts -u/--user user The user with which to authenticate -a/--auth auth The credentials to use for authentication --ca-cert ca-cert The path to a CA bundle --client-cert client-cert The path to a client certificate, optionally containing the private key --client-key client-key The path to the client certificate's private key repos A table of named repositories to their respective options"},{"location":"plugins/publisher/package-index/#repositories","title":"Repositories","text":"

All top-level options can be overridden per repository using the repos table with a required url attribute for each repository. The following shows the default configuration:

config.toml 
[publish.index.repos.main]\nurl = \"https://upload.pypi.org/legacy/\"\n\n[publish.index.repos.test]\nurl = \"https://test.pypi.org/legacy/\"\n

The repo and repos options have no effect.

"},{"location":"plugins/publisher/reference/","title":"Publisher plugins","text":""},{"location":"plugins/publisher/reference/#hatch.publish.plugin.interface.PublisherInterface","title":"PublisherInterface","text":"

Example usage:

plugin.py hooks.py 
    from hatch.publish.plugin.interface import PublisherInterface\n\n\n    class SpecialPublisher(PublisherInterface):\n        PLUGIN_NAME = 'special'\n        ...\n
    from hatchling.plugin import hookimpl\n\n    from .plugin import SpecialPublisher\n\n\n    @hookimpl\n    def hatch_register_publisher():\n        return SpecialPublisher\n
Source code in src/hatch/publish/plugin/interface.py 
class PublisherInterface(ABC):\n    \"\"\"\n    Example usage:\n\n    ```python tab=\"plugin.py\"\n        from hatch.publish.plugin.interface import PublisherInterface\n\n\n        class SpecialPublisher(PublisherInterface):\n            PLUGIN_NAME = 'special'\n            ...\n    ```\n\n    ```python tab=\"hooks.py\"\n        from hatchling.plugin import hookimpl\n\n        from .plugin import SpecialPublisher\n\n\n        @hookimpl\n        def hatch_register_publisher():\n            return SpecialPublisher\n    ```\n    \"\"\"\n\n    PLUGIN_NAME = ''\n    \"\"\"The name used for selection.\"\"\"\n\n    def __init__(self, app, root, cache_dir, project_config, plugin_config):\n        self.__app = app\n        self.__root = root\n        self.__cache_dir = cache_dir\n        self.__project_config = project_config\n        self.__plugin_config = plugin_config\n\n        self.__disable = None\n\n    @property\n    def app(self):\n        \"\"\"\n        An instance of [Application](../utilities.md#hatchling.bridge.app.Application).\n        \"\"\"\n        return self.__app\n\n    @property\n    def root(self):\n        \"\"\"\n        The root of the project tree as a path-like object.\n        \"\"\"\n        return self.__root\n\n    @property\n    def cache_dir(self):\n        \"\"\"\n        The directory reserved exclusively for this plugin as a path-like object.\n        \"\"\"\n        return self.__cache_dir\n\n    @property\n    def project_config(self) -> dict:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.publish.<PLUGIN_NAME>]\n        ```\n        \"\"\"\n        return self.__project_config\n\n    @property\n    def plugin_config(self) -> dict:\n        \"\"\"\n        This is defined in Hatch's [config file](../../config/hatch.md).\n\n        ```toml tab=\"config.toml\"\n        [publish.<PLUGIN_NAME>]\n        ```\n        \"\"\"\n        return self.__plugin_config\n\n    @property\n    def disable(self):\n        \"\"\"\n        Whether this plugin is disabled, thus requiring confirmation when publishing. Local\n        [project configuration](reference.md#hatch.publish.plugin.interface.PublisherInterface.project_config)\n        takes precedence over global\n        [plugin configuration](reference.md#hatch.publish.plugin.interface.PublisherInterface.plugin_config).\n        \"\"\"\n        if self.__disable is None:\n            if 'disable' in self.project_config:\n                disable = self.project_config['disable']\n                if not isinstance(disable, bool):\n                    message = f'Field `tool.hatch.publish.{self.PLUGIN_NAME}.disable` must be a boolean'\n                    raise TypeError(message)\n            else:\n                disable = self.plugin_config.get('disable', False)\n                if not isinstance(disable, bool):\n                    message = f'Global plugin configuration `publish.{self.PLUGIN_NAME}.disable` must be a boolean'\n                    raise TypeError(message)\n\n            self.__disable = disable\n\n        return self.__disable\n\n    @abstractmethod\n    def publish(self, artifacts: list[str], options: dict):\n        \"\"\"\n        :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n        This is called directly by the [`publish`](../../cli/reference.md#hatch-publish) command\n        with the arguments and options it receives.\n        \"\"\"\n
"},{"location":"plugins/publisher/reference/#hatch.publish.plugin.interface.PublisherInterface.PLUGIN_NAME","title":"PLUGIN_NAME = '' class-attribute instance-attribute","text":"

The name used for selection.

"},{"location":"plugins/publisher/reference/#hatch.publish.plugin.interface.PublisherInterface.app","title":"app property","text":"

An instance of Application.

"},{"location":"plugins/publisher/reference/#hatch.publish.plugin.interface.PublisherInterface.root","title":"root property","text":"

The root of the project tree as a path-like object.

"},{"location":"plugins/publisher/reference/#hatch.publish.plugin.interface.PublisherInterface.cache_dir","title":"cache_dir property","text":"

The directory reserved exclusively for this plugin as a path-like object.

"},{"location":"plugins/publisher/reference/#hatch.publish.plugin.interface.PublisherInterface.project_config","title":"project_config: dict property","text":"pyproject.toml hatch.toml 
[tool.hatch.publish.<PLUGIN_NAME>]\n
[publish.<PLUGIN_NAME>]\n
"},{"location":"plugins/publisher/reference/#hatch.publish.plugin.interface.PublisherInterface.plugin_config","title":"plugin_config: dict property","text":"

This is defined in Hatch's config file.

config.toml 
[publish.<PLUGIN_NAME>]\n
"},{"location":"plugins/publisher/reference/#hatch.publish.plugin.interface.PublisherInterface.disable","title":"disable property","text":"

Whether this plugin is disabled, thus requiring confirmation when publishing. Local project configuration takes precedence over global plugin configuration.

"},{"location":"plugins/publisher/reference/#hatch.publish.plugin.interface.PublisherInterface.publish","title":"publish(artifacts: list[str], options: dict) abstractmethod","text":"

REQUIRED

This is called directly by the publish command with the arguments and options it receives.

Source code in src/hatch/publish/plugin/interface.py 
@abstractmethod\ndef publish(self, artifacts: list[str], options: dict):\n    \"\"\"\n    :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n    This is called directly by the [`publish`](../../cli/reference.md#hatch-publish) command\n    with the arguments and options it receives.\n    \"\"\"\n
"},{"location":"plugins/version-scheme/reference/","title":"Version scheme plugins","text":""},{"location":"plugins/version-scheme/reference/#known-third-party","title":"Known third-party","text":""},{"location":"plugins/version-scheme/reference/#hatchling.version.scheme.plugin.interface.VersionSchemeInterface","title":"VersionSchemeInterface","text":"

Example usage:

plugin.py hooks.py 
from hatchling.version.scheme.plugin.interface import VersionSchemeInterface\n\n\nclass SpecialVersionScheme(VersionSchemeInterface):\n    PLUGIN_NAME = 'special'\n    ...\n
from hatchling.plugin import hookimpl\n\nfrom .plugin import SpecialVersionScheme\n\n\n@hookimpl\ndef hatch_register_version_scheme():\n    return SpecialVersionScheme\n
Source code in backend/src/hatchling/version/scheme/plugin/interface.py 
class VersionSchemeInterface(ABC):  # no cov\n    \"\"\"\n    Example usage:\n\n    ```python tab=\"plugin.py\"\n    from hatchling.version.scheme.plugin.interface import VersionSchemeInterface\n\n\n    class SpecialVersionScheme(VersionSchemeInterface):\n        PLUGIN_NAME = 'special'\n        ...\n    ```\n\n    ```python tab=\"hooks.py\"\n    from hatchling.plugin import hookimpl\n\n    from .plugin import SpecialVersionScheme\n\n\n    @hookimpl\n    def hatch_register_version_scheme():\n        return SpecialVersionScheme\n    ```\n    \"\"\"\n\n    PLUGIN_NAME = ''\n    \"\"\"The name used for selection.\"\"\"\n\n    def __init__(self, root: str, config: dict) -> None:\n        self.__root = root\n        self.__config = config\n\n    @property\n    def root(self) -> str:\n        \"\"\"\n        The root of the project tree as a string.\n        \"\"\"\n        return self.__root\n\n    @property\n    def config(self) -> dict:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.version]\n        ```\n        \"\"\"\n        return self.__config\n\n    @abstractmethod\n    def update(self, desired_version: str, original_version: str, version_data: dict) -> str:\n        \"\"\"\n        This should return a normalized form of the desired version and verify that it\n        is higher than the original version.\n        \"\"\"\n
"},{"location":"plugins/version-scheme/reference/#hatchling.version.scheme.plugin.interface.VersionSchemeInterface.PLUGIN_NAME","title":"PLUGIN_NAME = '' class-attribute instance-attribute","text":"

The name used for selection.

"},{"location":"plugins/version-scheme/reference/#hatchling.version.scheme.plugin.interface.VersionSchemeInterface.root","title":"root: str property","text":"

The root of the project tree as a string.

"},{"location":"plugins/version-scheme/reference/#hatchling.version.scheme.plugin.interface.VersionSchemeInterface.config","title":"config: dict property","text":"pyproject.toml hatch.toml 
[tool.hatch.version]\n
[version]\n
"},{"location":"plugins/version-scheme/reference/#hatchling.version.scheme.plugin.interface.VersionSchemeInterface.update","title":"update(desired_version: str, original_version: str, version_data: dict) -> str abstractmethod","text":"

This should return a normalized form of the desired version and verify that it is higher than the original version.

Source code in backend/src/hatchling/version/scheme/plugin/interface.py 
@abstractmethod\ndef update(self, desired_version: str, original_version: str, version_data: dict) -> str:\n    \"\"\"\n    This should return a normalized form of the desired version and verify that it\n    is higher than the original version.\n    \"\"\"\n
"},{"location":"plugins/version-scheme/standard/","title":"Standard version scheme","text":"

See the documentation for versioning.

"},{"location":"plugins/version-scheme/standard/#configuration","title":"Configuration","text":"

The version scheme plugin name is standard.

pyproject.toml hatch.toml 
[tool.hatch.version]\nscheme = \"standard\"\n
[version]\nscheme = \"standard\"\n
"},{"location":"plugins/version-scheme/standard/#options","title":"Options","text":"Option Description validate-bump When setting a specific version, this determines whether to check that the new version is higher than the original. The default is true."},{"location":"plugins/version-source/code/","title":"Code version source","text":""},{"location":"plugins/version-source/code/#updates","title":"Updates","text":"

Setting the version is not supported.

"},{"location":"plugins/version-source/code/#configuration","title":"Configuration","text":"

The version source plugin name is code.

pyproject.toml hatch.toml 
[tool.hatch.version]\nsource = \"code\"\n
[version]\nsource = \"code\"\n
"},{"location":"plugins/version-source/code/#options","title":"Options","text":"Option Description path (required) A relative path to a Python file or extension module that will be loaded expression A Python expression that when evaluated in the context of the loaded file returns the version. The default expression is simply __version__. search-paths A list of relative paths to directories that will be prepended to Python's search path"},{"location":"plugins/version-source/code/#missing-imports","title":"Missing imports","text":"

If the chosen path imports another module in your project, then you'll need to use absolute imports coupled with the search-paths option. For example, say you need to load the following file:

src/pkg/__init__.py 
    from ._version import get_version\n\n    __version__ = get_version()\n

You should change it to:

src/pkg/__init__.py 
    from pkg._version import get_version\n\n    __version__ = get_version()\n

and the configuration would become:

pyproject.toml hatch.toml 
[tool.hatch.version]\nsource = \"code\"\npath = \"src/pkg/__init__.py\"\nsearch-paths = [\"src\"]\n
[version]\nsource = \"code\"\npath = \"src/pkg/__init__.py\"\nsearch-paths = [\"src\"]\n
"},{"location":"plugins/version-source/env/","title":"Environment version source","text":"

Retrieves the version from an environment variable. This can be useful in build pipelines where the version is set by an external trigger.

"},{"location":"plugins/version-source/env/#updates","title":"Updates","text":"

Setting the version is not supported.

"},{"location":"plugins/version-source/env/#configuration","title":"Configuration","text":"

The version source plugin name is env.

pyproject.toml hatch.toml 
[tool.hatch.version]\nsource = \"env\"\n
[version]\nsource = \"env\"\n
"},{"location":"plugins/version-source/env/#options","title":"Options","text":"Option Description variable (required) The name of the environment variable"},{"location":"plugins/version-source/reference/","title":"Version source plugins","text":""},{"location":"plugins/version-source/reference/#known-third-party","title":"Known third-party","text":""},{"location":"plugins/version-source/reference/#hatchling.version.source.plugin.interface.VersionSourceInterface","title":"VersionSourceInterface","text":"

Example usage:

plugin.py hooks.py 
from hatchling.version.source.plugin.interface import VersionSourceInterface\n\n\nclass SpecialVersionSource(VersionSourceInterface):\n    PLUGIN_NAME = 'special'\n    ...\n
from hatchling.plugin import hookimpl\n\nfrom .plugin import SpecialVersionSource\n\n\n@hookimpl\ndef hatch_register_version_source():\n    return SpecialVersionSource\n
Source code in backend/src/hatchling/version/source/plugin/interface.py 
class VersionSourceInterface(ABC):  # no cov\n    \"\"\"\n    Example usage:\n\n    ```python tab=\"plugin.py\"\n    from hatchling.version.source.plugin.interface import VersionSourceInterface\n\n\n    class SpecialVersionSource(VersionSourceInterface):\n        PLUGIN_NAME = 'special'\n        ...\n    ```\n\n    ```python tab=\"hooks.py\"\n    from hatchling.plugin import hookimpl\n\n    from .plugin import SpecialVersionSource\n\n\n    @hookimpl\n    def hatch_register_version_source():\n        return SpecialVersionSource\n    ```\n    \"\"\"\n\n    PLUGIN_NAME = ''\n    \"\"\"The name used for selection.\"\"\"\n\n    def __init__(self, root: str, config: dict) -> None:\n        self.__root = root\n        self.__config = config\n\n    @property\n    def root(self) -> str:\n        \"\"\"\n        The root of the project tree as a string.\n        \"\"\"\n        return self.__root\n\n    @property\n    def config(self) -> dict:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.version]\n        ```\n        \"\"\"\n        return self.__config\n\n    @abstractmethod\n    def get_version_data(self) -> dict:\n        \"\"\"\n        This should return a mapping with a `version` key representing the current version of the project and will be\n        displayed when invoking the [`version`](../../cli/reference.md#hatch-version) command without any arguments.\n\n        The mapping can contain anything else and will be passed to\n        [set_version](reference.md#hatchling.version.source.plugin.interface.VersionSourceInterface.set_version)\n        when updating the version.\n        \"\"\"\n\n    def set_version(self, version: str, version_data: dict) -> None:\n        \"\"\"\n        This should update the version to the first argument with the data provided during retrieval.\n        \"\"\"\n        raise NotImplementedError\n
"},{"location":"plugins/version-source/reference/#hatchling.version.source.plugin.interface.VersionSourceInterface.PLUGIN_NAME","title":"PLUGIN_NAME = '' class-attribute instance-attribute","text":"

The name used for selection.

"},{"location":"plugins/version-source/reference/#hatchling.version.source.plugin.interface.VersionSourceInterface.root","title":"root: str property","text":"

The root of the project tree as a string.

"},{"location":"plugins/version-source/reference/#hatchling.version.source.plugin.interface.VersionSourceInterface.config","title":"config: dict property","text":"pyproject.toml hatch.toml 
[tool.hatch.version]\n
[version]\n
"},{"location":"plugins/version-source/reference/#hatchling.version.source.plugin.interface.VersionSourceInterface.get_version_data","title":"get_version_data() -> dict abstractmethod","text":"

This should return a mapping with a version key representing the current version of the project and will be displayed when invoking the version command without any arguments.

The mapping can contain anything else and will be passed to set_version when updating the version.

Source code in backend/src/hatchling/version/source/plugin/interface.py 
@abstractmethod\ndef get_version_data(self) -> dict:\n    \"\"\"\n    This should return a mapping with a `version` key representing the current version of the project and will be\n    displayed when invoking the [`version`](../../cli/reference.md#hatch-version) command without any arguments.\n\n    The mapping can contain anything else and will be passed to\n    [set_version](reference.md#hatchling.version.source.plugin.interface.VersionSourceInterface.set_version)\n    when updating the version.\n    \"\"\"\n
"},{"location":"plugins/version-source/reference/#hatchling.version.source.plugin.interface.VersionSourceInterface.set_version","title":"set_version(version: str, version_data: dict) -> None","text":"

This should update the version to the first argument with the data provided during retrieval.

Source code in backend/src/hatchling/version/source/plugin/interface.py 
def set_version(self, version: str, version_data: dict) -> None:\n    \"\"\"\n    This should update the version to the first argument with the data provided during retrieval.\n    \"\"\"\n    raise NotImplementedError\n
"},{"location":"plugins/version-source/regex/","title":"Regex version source","text":"

See the documentation for versioning.

"},{"location":"plugins/version-source/regex/#updates","title":"Updates","text":"

Setting the version is supported.

"},{"location":"plugins/version-source/regex/#configuration","title":"Configuration","text":"

The version source plugin name is regex.

pyproject.toml hatch.toml 
[tool.hatch.version]\nsource = \"regex\"\n
[version]\nsource = \"regex\"\n
"},{"location":"plugins/version-source/regex/#options","title":"Options","text":"Option Description path (required) A relative path to a file containing the project's version pattern A regular expression that has a named group called version that represents the version. The default pattern looks for a variable named __version__ or VERSION that is set to a string containing the version, optionally prefixed with the lowercase letter v."},{"location":"blog/archive/2023/","title":"2023","text":""},{"location":"blog/archive/2022/","title":"2022","text":""},{"location":"blog/category/release/","title":"Release","text":""}]} \ No newline at end of file diff --git a/latest/history/hatch/index.html b/latest/history/hatch/index.html index a2db6615e..42ed6c508 100644 --- a/latest/history/hatch/index.html +++ b/latest/history/hatch/index.html @@ -7,4 +7,4 @@ .gdesc-inner { font-size: 0.75rem; } body[data-md-color-scheme="slate"] .gdesc-inner { background: var(--md-default-bg-color);} body[data-md-color-scheme="slate"] .gslide-title { color: var(--md-default-fg-color);} - body[data-md-color-scheme="slate"] .gslide-desc { color: var(--md-default-fg-color);}
Skip to content

Hatch history

All notable changes to Hatch will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

Unreleased

1.9.6 - 2024-04-24

Fixed:

  • Limit the maximum version of virtualenv due to a backward incompatible change

1.9.4 - 2024-03-12

Fixed:

  • Limit the maximum version of Hatchling in anticipation of backward incompatible changes

1.9.3 - 2024-01-25

Fixed:

  • Fix loading of local plugins to account for newly released versions of a dependency

1.9.2 - 2024-01-21

Fixed:

  • Fix the default token variable name for publishing to PyPI

1.9.1 - 2023-12-25

Fixed:

  • Ensure that the dependency_hash method of the environment interface is called after sync_dependencies for cases where the hash is only known at that point, such as for dependency lockers
  • Only acknowledge the HATCH_PYTHON_VARIANT_* environment variables for Python resolution for supported platforms and architectures
  • Fix Python resolution when there are metadata hooks with unsatisfied dependencies

1.9.0 - 2023-12-19

Changed:

  • Environments prefixed by hatch- are now considered internal and used for special purposes such as configuration for static analysis

Added:

  • Enable docstring formatting by default for static analysis
  • Allow for overriding config of internal environments
  • Concretely state the expected API contract for the environment interface methods find and check_compatibility
  • Upgrade Ruff to 0.1.8
  • Bump the minimum supported version of Hatchling to 1.21.0

Fixed:

  • Ignore a project's Python requirement for environments where the project is not installed
  • When not persisting config for static analysis, properly manage internal settings when Ruff's top level table already exists
  • Ignore compatibility checks when environments have already been created, significantly improving performance of environment usage
  • Properly allow overriding of the path option for the virtual environment type
  • Fix nushell activation on non-Windows systems

1.8.1 - 2023-12-14

Fixed:

  • Fix regression in calling subprocesses with updated PATH
  • Fix automatic installation of environment plugins when running as a standalone binary
  • Change default location of Python installations

1.8.0 - 2023-12-11

Changed:

  • Drop support for Python 3.7
  • The get_build_process method of the environment interface has been removed; plugins should use the new run_builder method instead
  • Remove pyperclip dependency and the --copy flag of the config find command
  • When running the build command all output from builders is now displayed as-is in real time without the stripping of ANSI codes
  • Version information (for Hatch itself) is now derived from Git

Added:

  • Support Python 3.12
  • Add installers and standalone binaries
  • Add the ability to manage Python installations
  • Add fmt command
  • The virtual environment type can now automatically download requested versions of Python that are not installed
  • Add dependency_hash method to the environment interface
  • The state of installed dependencies for environments is saved as metadata so if dependency definitions have not changed then no checking is performed, which can be computationally expensive
  • The build command now supports backends other than Hatchling
  • Allow the use of features for environments when skip-install is enabled
  • The default is now __token__ when prompting for a username for the publish command
  • Add a new run_builder method to the environment interface
  • Bump the minimum supported version of Hatchling to 1.19.0
  • Bump the minimum supported version of click to 8.0.6

Fixed:

  • Fix nushell activation
  • Better handling of flat storage directory hierarchies for the virtual environment type
  • Display useful information when running the version command outside of a project rather than erroring
  • Fix the project metadata command by only capturing stdout from the backend
  • Properly support Google Artifact Registry
  • Fix parsing dependencies for environments when warnings are emitted

1.7.0 - 2023-04-03

Changed:

  • The src-layout project template option is now enabled by default
  • Non-critical output now goes to stderr

Added:

  • Add tool.hatch.env.requires configuration to automatically install dependencies for environment and environment collector plugins
  • Add custom environment collector
  • Improve syncing of dependencies provided through Git direct references
  • Add isolated_data_directory attribute to the environment interface
  • Increase the timeout for and add retries to the index publisher
  • Expand home and environment variables in configured cache and data directories
  • Improve readability of exceptions
  • Update project templates
  • Bump the minimum supported version of Hatchling to 1.14.0

Fixed:

  • Fix displaying the version with the version command when the version is static and build dependencies are unmet
  • Fix build environments for the virtual environment type when storing within a relative path
  • Work around System Integrity Protection on macOS when running commands
  • Allow setuptools metadata migration for projects without setup.py if setup.cfg is present
  • Handle additional edge cases for setuptools metadata migration
  • Support boolean values for the config set command

1.6.3 - 2022-10-24

Fixed:

  • Fix version command when the version is dynamic and build dependencies are unmet

1.6.2 - 2022-10-20

Fixed:

  • Fix getting dynamic metadata from hooks for environments when dependencies are not dynamic

1.6.1 - 2022-10-16

Fixed:

  • Computing the path to the user's home directory now gracefully falls back to ~ when it cannot be determined

1.6.0 - 2022-10-08

Changed:

  • The run_shell_command environment interface method now accepts arbitrary subprocess.Popen keyword arguments. This is not strictly breaking, but will be utilized in upcoming features.
  • The internal directory structure for storing virtual environments is now more nested. This is not breaking, but any local environments will be created anew.

Added:

  • Add project command group to view details about the project like PEP 621 metadata
  • Better support for auto-detection of environments by tools like Visual Studio Code now that the storage directory of virtual environments will be flat if Hatch's configured virtual environment directory resides somewhere within the project root or if it is set to a .virtualenvs directory within the user's home directory
  • Build environments for the virtual environment type are now cached for improved performance
  • Add build_environment_exists method to the environment interface for implementations that cache the build environment
  • Add path option to the virtual environment type
  • Add --initialize-auth flag to the index publisher to allow for the saving of authentication information before publishing
  • Support Bash on Windows for the shell command
  • The setuptools migration script no longer modifies the formatting of existing pyproject.toml configuration
  • Bump the minimum supported version of Hatchling to 1.11.0

Fixed:

  • Environments now respect dynamically defined project dependencies
  • The dep hash and all dep show commands now respect dynamically defined project dependencies
  • The env show, dep hash, and all dep show commands now honor context formatting
  • Fix matrix variable inclusion filtering of the run and env run commands when there are multiple possible variables
  • Build environment compatibility is now checked before use
  • Decreasing verbosity now has no affect on output that should always be displayed
  • Handle more edge cases in the setuptools migration script
  • Environments now respect user defined environment variables for context formatting
  • Update the scripts in the generated test environment template for new projects to reflect the documentation
  • Allow extra-dependencies in environment overrides
  • Depend on packaging explicitly rather than relying on it being a transitive dependency of Hatchling

1.5.0 - 2022-08-28

Added:

  • The index publisher now recognizes repository-specific options
  • Add the --ignore-compat flag to the env run command
  • Setting the HATCH_PYTHON environment variable to self will now force the use of the Python executable Hatch is running on for virtual environment creation

Fixed:

  • Fix the --force-continue flag of the env run command
  • Handle more edge cases in the setuptools migration script

1.4.2 - 2022-08-16

Fixed:

  • Fix check for updating static versions with the version command when metadata hooks are in use

1.4.1 - 2022-08-13

Fixed:

  • Fix non-detached inheritance disabling for environments

1.4.0 - 2022-08-06

Added:

  • The default Python for virtual environments now checks PATH before using the one Hatch is running on
  • Values for environment env-vars now support context formatting
  • Add name override for environments to allow for regular expression matching
  • The index publisher now better supports non-PyPI indices
  • Add certificate options to the index publisher
  • Display waiting text when checking dependencies and removing environments
  • Display help text the first time the shell command is executed
  • Update project templates with Python 3.11 and the latest versions of various GitHub Actions
  • Add support for Almquist (ash) shells
  • Add hyperlink as a dependency for better handling of package index URLs
  • Bump the minimum supported version of virtualenv to 20.16.2
  • Bump the minimum supported version of tomlkit to 0.11.1

Fixed:

  • Acknowledge extra-dependencies for the env show command
  • Fix locating executables within virtual environments on Debian
  • Fix managing the terminal size inside the shell command
  • Fix default code coverage file omission for the src-layout project template option

1.3.1 - 2022-07-11

Fixed:

  • Support -h/--help flag for the run command

1.3.0 - 2022-07-10

Changed:

  • Rename the default publishing plugin from pypi to the more generic index

Added:

  • Support the absence of pyproject.toml files, as is the case for apps and non-Python projects
  • Hide scripts that start with an underscore for the env show command by default
  • Ignoring the exit codes of commands by prefixing with hyphens now works with entire named scripts
  • Add a way to require confirmation for publishing
  • Add --force-continue flag to the env run command
  • Make tracebacks colorful and less verbose
  • When shell configuration has not been defined, attempt to use the current shell based on parent processes before resorting to the defaults
  • The shell name pwsh is now an alias for powershell
  • Remove atomicwrites dependency
  • Relax constraint on userpath dependency
  • Bump the minimum supported version of Hatchling to 1.4.1

Fixed:

  • Keep environments in sync with the dependencies of the selected features
  • Use utf-8 for all files generated for new projects
  • Escape special characters Git may return in the user name when writing generated files for new projects
  • Normalize the package name to lowercase in setuptools migration script
  • Fix parsing of source distributions during publishing

1.2.1 - 2022-05-30

Fixed:

  • Fix handling of top level data_files in setuptools migration script

1.2.0 - 2022-05-22

Changed:

  • The enter_shell environment plugin method now accepts an additional args parameter

Added:

  • Allow context string formatting for environment dependencies
  • Add environment context string formatting fields env_name, env_type, matrix, verbosity, and args
  • Support overriding the default arguments used to spawn shells on non-Windows systems
  • Bump the minimum supported version of Hatchling to 1.3.0

Fixed:

  • Improve setuptools migration script

1.1.2 - 2022-05-20

Fixed:

  • Bump the minimum supported version of Hatchling to 1.2.0
  • Update project metadata to reflect support for Python 3.11

1.1.1 - 2022-05-12

Fixed:

  • Fix setuptools migration script for non-Windows systems

1.1.0 - 2022-05-12

Changed:

  • In order to simplify the implementation of command execution for environment plugins, the run_shell_commands method has been replaced by the singular run_shell_command. A new command_context method has been added to more easily satisfy complex use cases.
  • The finalize_command environment plugin method has been removed in favor of the newly introduced context formatting functionality.

Added:

  • Add context formatting functionality i.e. the ability to insert values into configuration like environment variables and command line arguments
  • Any verbosity for command execution will now always display headers, even for single environments
  • Every executed command is now displayed when running multiple commands or when verbosity is enabled
  • Similar to make, ignore the exit code of executed commands that start with - (a hyphen)
  • Add ability for the --init flag of the new command to automatically migrate setuptools configuration
  • Update project metadata to reflect the adoption by PyPA and production stability

1.0.0 - 2022-04-28

This is the first stable release of Hatch v1, a complete rewrite. Enjoy!

\ No newline at end of file + body[data-md-color-scheme="slate"] .gslide-desc { color: var(--md-default-fg-color);}
Skip to content

Hatch history

All notable changes to Hatch will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

Unreleased

1.9.6 - 2024-04-24

Fixed:

  • Limit the maximum version of virtualenv due to a backward incompatible change
  • Upgrade PyApp to 0.12.0 for binary builds

1.9.4 - 2024-03-12

Fixed:

  • Limit the maximum version of Hatchling in anticipation of backward incompatible changes

1.9.3 - 2024-01-25

Fixed:

  • Fix loading of local plugins to account for newly released versions of a dependency

1.9.2 - 2024-01-21

Fixed:

  • Fix the default token variable name for publishing to PyPI

1.9.1 - 2023-12-25

Fixed:

  • Ensure that the dependency_hash method of the environment interface is called after sync_dependencies for cases where the hash is only known at that point, such as for dependency lockers
  • Only acknowledge the HATCH_PYTHON_VARIANT_* environment variables for Python resolution for supported platforms and architectures
  • Fix Python resolution when there are metadata hooks with unsatisfied dependencies

1.9.0 - 2023-12-19

Changed:

  • Environments prefixed by hatch- are now considered internal and used for special purposes such as configuration for static analysis

Added:

  • Enable docstring formatting by default for static analysis
  • Allow for overriding config of internal environments
  • Concretely state the expected API contract for the environment interface methods find and check_compatibility
  • Upgrade Ruff to 0.1.8
  • Bump the minimum supported version of Hatchling to 1.21.0

Fixed:

  • Ignore a project's Python requirement for environments where the project is not installed
  • When not persisting config for static analysis, properly manage internal settings when Ruff's top level table already exists
  • Ignore compatibility checks when environments have already been created, significantly improving performance of environment usage
  • Properly allow overriding of the path option for the virtual environment type
  • Fix nushell activation on non-Windows systems

1.8.1 - 2023-12-14

Fixed:

  • Fix regression in calling subprocesses with updated PATH
  • Fix automatic installation of environment plugins when running as a standalone binary
  • Change default location of Python installations

1.8.0 - 2023-12-11

Changed:

  • Drop support for Python 3.7
  • The get_build_process method of the environment interface has been removed; plugins should use the new run_builder method instead
  • Remove pyperclip dependency and the --copy flag of the config find command
  • When running the build command all output from builders is now displayed as-is in real time without the stripping of ANSI codes
  • Version information (for Hatch itself) is now derived from Git

Added:

  • Support Python 3.12
  • Add installers and standalone binaries
  • Add the ability to manage Python installations
  • Add fmt command
  • The virtual environment type can now automatically download requested versions of Python that are not installed
  • Add dependency_hash method to the environment interface
  • The state of installed dependencies for environments is saved as metadata so if dependency definitions have not changed then no checking is performed, which can be computationally expensive
  • The build command now supports backends other than Hatchling
  • Allow the use of features for environments when skip-install is enabled
  • The default is now __token__ when prompting for a username for the publish command
  • Add a new run_builder method to the environment interface
  • Bump the minimum supported version of Hatchling to 1.19.0
  • Bump the minimum supported version of click to 8.0.6

Fixed:

  • Fix nushell activation
  • Better handling of flat storage directory hierarchies for the virtual environment type
  • Display useful information when running the version command outside of a project rather than erroring
  • Fix the project metadata command by only capturing stdout from the backend
  • Properly support Google Artifact Registry
  • Fix parsing dependencies for environments when warnings are emitted

1.7.0 - 2023-04-03

Changed:

  • The src-layout project template option is now enabled by default
  • Non-critical output now goes to stderr

Added:

  • Add tool.hatch.env.requires configuration to automatically install dependencies for environment and environment collector plugins
  • Add custom environment collector
  • Improve syncing of dependencies provided through Git direct references
  • Add isolated_data_directory attribute to the environment interface
  • Increase the timeout for and add retries to the index publisher
  • Expand home and environment variables in configured cache and data directories
  • Improve readability of exceptions
  • Update project templates
  • Bump the minimum supported version of Hatchling to 1.14.0

Fixed:

  • Fix displaying the version with the version command when the version is static and build dependencies are unmet
  • Fix build environments for the virtual environment type when storing within a relative path
  • Work around System Integrity Protection on macOS when running commands
  • Allow setuptools metadata migration for projects without setup.py if setup.cfg is present
  • Handle additional edge cases for setuptools metadata migration
  • Support boolean values for the config set command

1.6.3 - 2022-10-24

Fixed:

  • Fix version command when the version is dynamic and build dependencies are unmet

1.6.2 - 2022-10-20

Fixed:

  • Fix getting dynamic metadata from hooks for environments when dependencies are not dynamic

1.6.1 - 2022-10-16

Fixed:

  • Computing the path to the user's home directory now gracefully falls back to ~ when it cannot be determined

1.6.0 - 2022-10-08

Changed:

  • The run_shell_command environment interface method now accepts arbitrary subprocess.Popen keyword arguments. This is not strictly breaking, but will be utilized in upcoming features.
  • The internal directory structure for storing virtual environments is now more nested. This is not breaking, but any local environments will be created anew.

Added:

  • Add project command group to view details about the project like PEP 621 metadata
  • Better support for auto-detection of environments by tools like Visual Studio Code now that the storage directory of virtual environments will be flat if Hatch's configured virtual environment directory resides somewhere within the project root or if it is set to a .virtualenvs directory within the user's home directory
  • Build environments for the virtual environment type are now cached for improved performance
  • Add build_environment_exists method to the environment interface for implementations that cache the build environment
  • Add path option to the virtual environment type
  • Add --initialize-auth flag to the index publisher to allow for the saving of authentication information before publishing
  • Support Bash on Windows for the shell command
  • The setuptools migration script no longer modifies the formatting of existing pyproject.toml configuration
  • Bump the minimum supported version of Hatchling to 1.11.0

Fixed:

  • Environments now respect dynamically defined project dependencies
  • The dep hash and all dep show commands now respect dynamically defined project dependencies
  • The env show, dep hash, and all dep show commands now honor context formatting
  • Fix matrix variable inclusion filtering of the run and env run commands when there are multiple possible variables
  • Build environment compatibility is now checked before use
  • Decreasing verbosity now has no affect on output that should always be displayed
  • Handle more edge cases in the setuptools migration script
  • Environments now respect user defined environment variables for context formatting
  • Update the scripts in the generated test environment template for new projects to reflect the documentation
  • Allow extra-dependencies in environment overrides
  • Depend on packaging explicitly rather than relying on it being a transitive dependency of Hatchling

1.5.0 - 2022-08-28

Added:

  • The index publisher now recognizes repository-specific options
  • Add the --ignore-compat flag to the env run command
  • Setting the HATCH_PYTHON environment variable to self will now force the use of the Python executable Hatch is running on for virtual environment creation

Fixed:

  • Fix the --force-continue flag of the env run command
  • Handle more edge cases in the setuptools migration script

1.4.2 - 2022-08-16

Fixed:

  • Fix check for updating static versions with the version command when metadata hooks are in use

1.4.1 - 2022-08-13

Fixed:

  • Fix non-detached inheritance disabling for environments

1.4.0 - 2022-08-06

Added:

  • The default Python for virtual environments now checks PATH before using the one Hatch is running on
  • Values for environment env-vars now support context formatting
  • Add name override for environments to allow for regular expression matching
  • The index publisher now better supports non-PyPI indices
  • Add certificate options to the index publisher
  • Display waiting text when checking dependencies and removing environments
  • Display help text the first time the shell command is executed
  • Update project templates with Python 3.11 and the latest versions of various GitHub Actions
  • Add support for Almquist (ash) shells
  • Add hyperlink as a dependency for better handling of package index URLs
  • Bump the minimum supported version of virtualenv to 20.16.2
  • Bump the minimum supported version of tomlkit to 0.11.1

Fixed:

  • Acknowledge extra-dependencies for the env show command
  • Fix locating executables within virtual environments on Debian
  • Fix managing the terminal size inside the shell command
  • Fix default code coverage file omission for the src-layout project template option

1.3.1 - 2022-07-11

Fixed:

  • Support -h/--help flag for the run command

1.3.0 - 2022-07-10

Changed:

  • Rename the default publishing plugin from pypi to the more generic index

Added:

  • Support the absence of pyproject.toml files, as is the case for apps and non-Python projects
  • Hide scripts that start with an underscore for the env show command by default
  • Ignoring the exit codes of commands by prefixing with hyphens now works with entire named scripts
  • Add a way to require confirmation for publishing
  • Add --force-continue flag to the env run command
  • Make tracebacks colorful and less verbose
  • When shell configuration has not been defined, attempt to use the current shell based on parent processes before resorting to the defaults
  • The shell name pwsh is now an alias for powershell
  • Remove atomicwrites dependency
  • Relax constraint on userpath dependency
  • Bump the minimum supported version of Hatchling to 1.4.1

Fixed:

  • Keep environments in sync with the dependencies of the selected features
  • Use utf-8 for all files generated for new projects
  • Escape special characters Git may return in the user name when writing generated files for new projects
  • Normalize the package name to lowercase in setuptools migration script
  • Fix parsing of source distributions during publishing

1.2.1 - 2022-05-30

Fixed:

  • Fix handling of top level data_files in setuptools migration script

1.2.0 - 2022-05-22

Changed:

  • The enter_shell environment plugin method now accepts an additional args parameter

Added:

  • Allow context string formatting for environment dependencies
  • Add environment context string formatting fields env_name, env_type, matrix, verbosity, and args
  • Support overriding the default arguments used to spawn shells on non-Windows systems
  • Bump the minimum supported version of Hatchling to 1.3.0

Fixed:

  • Improve setuptools migration script

1.1.2 - 2022-05-20

Fixed:

  • Bump the minimum supported version of Hatchling to 1.2.0
  • Update project metadata to reflect support for Python 3.11

1.1.1 - 2022-05-12

Fixed:

  • Fix setuptools migration script for non-Windows systems

1.1.0 - 2022-05-12

Changed:

  • In order to simplify the implementation of command execution for environment plugins, the run_shell_commands method has been replaced by the singular run_shell_command. A new command_context method has been added to more easily satisfy complex use cases.
  • The finalize_command environment plugin method has been removed in favor of the newly introduced context formatting functionality.

Added:

  • Add context formatting functionality i.e. the ability to insert values into configuration like environment variables and command line arguments
  • Any verbosity for command execution will now always display headers, even for single environments
  • Every executed command is now displayed when running multiple commands or when verbosity is enabled
  • Similar to make, ignore the exit code of executed commands that start with - (a hyphen)
  • Add ability for the --init flag of the new command to automatically migrate setuptools configuration
  • Update project metadata to reflect the adoption by PyPA and production stability

1.0.0 - 2022-04-28

This is the first stable release of Hatch v1, a complete rewrite. Enjoy!

\ No newline at end of file diff --git a/latest/search/search_index.json b/latest/search/search_index.json index a9bf78d4e..a74c6a4c4 100644 --- a/latest/search/search_index.json +++ b/latest/search/search_index.json @@ -1 +1 @@ -{"config":{"lang":["en"],"separator":"[\\s\\-]+","pipeline":["stopWordFilter"],"fields":{"title":{"boost":1000.0},"text":{"boost":1.0},"tags":{"boost":1000000.0}}},"docs":[{"location":"","title":"Hatch","text":"CI/CD Docs Package Meta

Hatch is a modern, extensible Python project manager. See the Why Hatch? page for more information.

"},{"location":"#license","title":"License","text":"

Hatch is distributed under the terms of the MIT license.

"},{"location":"#navigation","title":"Navigation","text":"

Documentation for specific MAJOR.MINOR versions can be chosen by using the dropdown on the top of every page. The dev version reflects changes that have not yet been released.

Also, desktop readers can use special keyboard shortcuts:

Keys Action Navigate to the \"previous\" page Navigate to the \"next\" page Display the search modal"},{"location":"build/","title":"Builds","text":""},{"location":"build/#configuration","title":"Configuration","text":"

Builds are configured using the tool.hatch.build table. Every target is defined by a section within tool.hatch.build.targets, for example:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.sdist]\nexclude = [\n  \"/.github\",\n  \"/docs\",\n]\n\n[tool.hatch.build.targets.wheel]\npackages = [\"src/foo\"]\n
[build.targets.sdist]\nexclude = [\n  \"/.github\",\n  \"/docs\",\n]\n\n[build.targets.wheel]\npackages = [\"src/foo\"]\n
"},{"location":"build/#building","title":"Building","text":"

Invoking the build command without any arguments will build the sdist and wheel targets:

$ hatch build\n[sdist]\ndist/hatch_demo-1rc0.tar.gz\n\n[wheel]\ndist/hatch_demo-1rc0-py3-none-any.whl\n

To only build specific targets, use the -t/--target option:

$ hatch build -t wheel\n[wheel]\ndist/hatch_demo-1rc0-py3-none-any.whl\n

If the target supports multiple versions, you can specify the exact versions to build by appending a colon followed by the desired versions separated by commas:

$ hatch -v build -t wheel:standard\n[wheel]\nBuilding `wheel` version `standard`\ndist/hatch_demo-1rc0-py3-none-any.whl\n
"},{"location":"build/#packaging-ecosystem","title":"Packaging ecosystem","text":"

Hatch complies with modern Python packaging specs and therefore your projects can be used by other tools with Hatch serving as just the build backend.

So you could use tox as an alternative to Hatch's environment management, or cibuildwheel to distribute packages for every platform, and they both will transparently use Hatch without any extra modification.

"},{"location":"environment/","title":"Environments","text":"

Environments are designed to allow for isolated workspaces for testing, building documentation, or anything else projects need.

Unless an environment is chosen explicitly, Hatch will use the default environment.

"},{"location":"environment/#creation","title":"Creation","text":"

You can create environments by using the env create command. Let's enter the directory of the project we created in the setup phase:

$ hatch env create\nCreating environment: default\nInstalling project in development mode\nSyncing dependencies\n

Tip

You never need to manually create environments as spawning a shell or running commands within one will automatically trigger creation.

"},{"location":"environment/#entering-environments","title":"Entering environments","text":"

You can spawn a shell within an environment by using the shell command.

$ hatch shell\n(hatch-demo) $\n

Now confirm the project has been installed:

(hatch-demo) $ pip show hatch-demo\nName: hatch-demo\nVersion: 0.0.1\n...\n

Finally, see where your environment's Python is located:

(hatch-demo) $ python -c \"import sys;print(sys.executable)\"\n...\n

You can type exit to leave the environment.

"},{"location":"environment/#command-execution","title":"Command execution","text":"

The run command allows you to execute commands in an environment as if you had already entered it. For example, running the following command will output the same path as before:

hatch run python -c \"import sys;print(sys.executable)\"\n
"},{"location":"environment/#scripts","title":"Scripts","text":"

You can also run any scripts that have been defined.

You'll notice that in the pyproject.toml file there are already scripts defined in the default environment. Try running the test command, which invokes pytest with some default arguments:

hatch run test\n

All additional arguments are passed through to that script, so for example if you wanted to see the version of pytest and which plugins are installed you could do:

hatch run test -VV\n
"},{"location":"environment/#dependencies","title":"Dependencies","text":"

Hatch ensures that environments are always compatible with the currently defined project dependencies (if installed and in dev mode) and environment dependencies.

To add cowsay as a dependency, open pyproject.toml and add it to the dependencies array:

pyproject.toml 
[project]\n...\ndependencies = [\n  \"cowsay\"\n]\n

This dependency will be installed the next time you spawn a shell or run a command. For example:

$ hatch run cowsay -t \"Hello, world!\"\nSyncing dependencies\n  _____________\n| Hello, world! |\n  =============\n             \\\n              \\\n                ^__^\n                (oo)\\_______\n                (__)\\       )\\/\\\n                    ||----w |\n                    ||     ||\n

Note

The Syncing dependencies status will display temporarily when Hatch updates environments in response to any dependency changes that you make.

"},{"location":"environment/#selection","title":"Selection","text":"

You can select which environment to enter or run commands in by using the -e/--env root option or by setting the HATCH_ENV environment variable.

The run command allows for more explicit selection by prepending <ENV_NAME>: to commands. For example, if you had the following configuration:

pyproject.toml hatch.toml 
[tool.hatch.envs.docs]\ndependencies = [\n  \"mkdocs\"\n]\n[tool.hatch.envs.docs.scripts]\nbuild = \"mkdocs build --clean --strict\"\nserve = \"mkdocs serve --dev-addr localhost:8000\"\n
[envs.docs]\ndependencies = [\n  \"mkdocs\"\n]\n[envs.docs.scripts]\nbuild = \"mkdocs build --clean --strict\"\nserve = \"mkdocs serve --dev-addr localhost:8000\"\n

you could then serve your documentation by running:

hatch run docs:serve\n

Tip

If you've already entered an environment, commands will target it by default.

"},{"location":"environment/#matrix","title":"Matrix","text":"

Every environment can define its own set of matrices:

pyproject.toml hatch.toml 
[tool.hatch.envs.test]\ndependencies = [\n  \"pytest\"\n]\n\n[[tool.hatch.envs.test.matrix]]\npython = [\"2.7\", \"3.8\"]\nversion = [\"42\", \"3.14\"]\n\n[[tool.hatch.envs.test.matrix]]\npython = [\"3.8\", \"3.9\"]\nversion = [\"9000\"]\nfeatures = [\"foo\", \"bar\"]\n
[envs.test]\ndependencies = [\n  \"pytest\"\n]\n\n[[envs.test.matrix]]\npython = [\"2.7\", \"3.8\"]\nversion = [\"42\", \"3.14\"]\n\n[[envs.test.matrix]]\npython = [\"3.8\", \"3.9\"]\nversion = [\"9000\"]\nfeatures = [\"foo\", \"bar\"]\n

Using the env show command would then display:

$ hatch env show --ascii\n     Standalone\n+---------+---------+\n| Name    | Type    |\n+=========+=========+\n| default | virtual |\n+---------+---------+\n                       Matrices\n+------+---------+---------------------+--------------+\n| Name | Type    | Envs                | Dependencies |\n+======+=========+=====================+==============+\n| test | virtual | test.py2.7-42       | pytest       |\n|      |         | test.py2.7-3.14     |              |\n|      |         | test.py3.8-42       |              |\n|      |         | test.py3.8-3.14     |              |\n|      |         | test.py3.8-9000-foo |              |\n|      |         | test.py3.8-9000-bar |              |\n|      |         | test.py3.9-9000-foo |              |\n|      |         | test.py3.9-9000-bar |              |\n+------+---------+---------------------+--------------+\n
"},{"location":"environment/#removal","title":"Removal","text":"

You can remove a single environment or environment matrix by using the env remove command or all of a project's environments by using the env prune command.

"},{"location":"install/","title":"Installation","text":""},{"location":"install/#installers","title":"Installers","text":"macOSWindows GUI installerCommand line installer
  1. In your browser, download the .pkg file: hatch-1.9.6.pkg
  2. Run your downloaded file and follow the on-screen instructions.
  3. Restart your terminal.

  4. To verify that the shell can find and run the hatch command in your PATH, use the following command.

    $ hatch --version\n1.9.6\n

  1. Download the file using the curl command. The -o option specifies the file name that the downloaded package is written to. In this example, the file is written to hatch-1.9.6.pkg in the current directory.

    curl -o hatch-1.9.6.pkg https://github.com/pypa/hatch/releases/download/hatch-v1.9.6/hatch-1.9.6.pkg\n

  2. Run the standard macOS installer program, specifying the downloaded .pkg file as the source. Use the -pkg parameter to specify the name of the package to install, and the -target / parameter for the drive in which to install the package. The files are installed to /usr/local/hatch, and an entry is created at /etc/paths.d/hatch that instructs shells to add the /usr/local/hatch directory to. You must include sudo on the command to grant write permissions to those folders.

    sudo installer -pkg ./hatch-1.9.6.pkg -target /\n

  3. Restart your terminal.

  4. To verify that the shell can find and run the hatch command in your PATH, use the following command.

    $ hatch --version\n1.9.6\n
GUI installerCommand line installer
  1. In your browser, download one the .msi files:
    • hatch-1.9.6-x64.msi
  2. Run your downloaded file and follow the on-screen instructions.
  3. Restart your terminal.

  4. To verify that the shell can find and run the hatch command in your PATH, use the following command.

    $ hatch --version\n1.9.6\n

  1. Download and run the installer using the standard Windows msiexec program, specifying one of the .msi files as the source. Use the /passive and /i parameters to request an unattended, normal installation.

    x64 
    msiexec /passive /i https://github.com/pypa/hatch/releases/download/hatch-v1.9.6/hatch-1.9.6-x64.msi\n

  2. Restart your terminal.

  3. To verify that the shell can find and run the hatch command in your PATH, use the following command.

    $ hatch --version\n1.9.6\n
"},{"location":"install/#standalone-binaries","title":"Standalone binaries","text":"

After downloading the archive corresponding to your platform and architecture, extract the binary to a directory that is on your PATH and rename to hatch.

LinuxmacOSWindows "},{"location":"install/#pip","title":"pip","text":"

Hatch is available on PyPI and can be installed with pip.

pip install hatch\n

Warning

This method modifies the Python environment in which you choose to install. Consider instead using pipx to avoid dependency conflicts.

"},{"location":"install/#pipx","title":"pipx","text":"

pipx allows for the global installation of Python applications in isolated environments.

pipx install hatch\n
"},{"location":"install/#homebrew","title":"Homebrew","text":"

See the formula for more details.

brew install hatch\n
"},{"location":"install/#conda","title":"Conda","text":"

See the feedstock for more details.

conda install -c conda-forge hatch\n

or with mamba:

mamba install hatch\n

Warning

This method modifies the Conda environment in which you choose to install. Consider instead using pipx or condax to avoid dependency conflicts.

"},{"location":"install/#macports","title":"MacPorts","text":"

See the port for more details.

sudo port install hatch\n
"},{"location":"install/#fedora","title":"Fedora","text":"

The minimum supported version is 37, currently in development as Rawhide.

sudo dnf install hatch\n
"},{"location":"install/#void-linux","title":"Void Linux","text":"
xbps-install hatch\n
"},{"location":"install/#build-system-availability","title":"Build system availability","text":"

Hatchling is Hatch's build backend which you will never need to install manually. See its changelog for version information.

"},{"location":"intro/","title":"Introduction","text":""},{"location":"intro/#setup","title":"Setup","text":"

Projects can be set up for use by Hatch using the new command.

"},{"location":"intro/#new-project","title":"New project","text":"

Let's say you want to create a project named Hatch Demo. You would run:

hatch new \"Hatch Demo\"\n

This would create the following structure in your current working directory:

hatch-demo\n\u251c\u2500\u2500 src\n\u2502   \u2514\u2500\u2500 hatch_demo\n\u2502       \u251c\u2500\u2500 __about__.py\n\u2502       \u2514\u2500\u2500 __init__.py\n\u251c\u2500\u2500 tests\n\u2502   \u2514\u2500\u2500 __init__.py\n\u251c\u2500\u2500 LICENSE.txt\n\u251c\u2500\u2500 README.md\n\u2514\u2500\u2500 pyproject.toml\n

Tip

There are many ways to customize project generation.

"},{"location":"intro/#existing-project","title":"Existing project","text":"

To initialize an existing project, enter the directory containing the project and run the following:

hatch new --init\n

If your project has a setup.py file the command will automatically migrate setuptools configuration for you. Otherwise, this will interactively guide you through the setup process.

"},{"location":"intro/#project-metadata","title":"Project metadata","text":"

Next you'll want to define more of your project's metadata located in the pyproject.toml file. You can specify things like its license, the supported versions of Python, and URLs referring to various parts of your project, like documentation.

"},{"location":"intro/#dependencies","title":"Dependencies","text":"

The last step of the setup process is to define any dependencies that you'd like your project to begin with.

"},{"location":"intro/#configuration","title":"Configuration","text":"

All project-specific configuration recognized by Hatch can be defined in either the pyproject.toml file, or a file named hatch.toml where options are not contained within the tool.hatch table:

pyproject.toml hatch.toml 
[tool.hatch]\noption = \"...\"\n\n[tool.hatch.table1]\noption = \"...\"\n\n[tool.hatch.table2]\noption = \"...\"\n
option = \"...\"\n\n[table1]\noption = \"...\"\n\n[table2]\noption = \"...\"\n

Top level keys in the latter file take precedence when defined in both.

Tip

If you want to make your file more compact, you can use dotted keys, turning the above example into:

pyproject.toml hatch.toml 
[tool.hatch]\noption = \"...\"\ntable1.option = \"...\"\ntable2.option = \"...\"\n
option = \"...\"\ntable1.option = \"...\"\ntable2.option = \"...\"\n
"},{"location":"next-steps/","title":"Next steps","text":""},{"location":"next-steps/#learn-more","title":"Learn more","text":"

At this point you should have a basic understanding of how to use Hatch.

Now you may want to check out advanced configuration for environments or builds, set up your preferred shell, or read more about Hatch's CLI.

After that, check out the Hatch Showcase project to see examples of what is possible.

Finally, if you see a need, feel free to write a plugin for extended functionality.

"},{"location":"next-steps/#community","title":"Community","text":"

For any projects using Hatch, you may add its official badge somewhere prominent like the README.

MarkdownreStructuredText 
[![Hatch project](https://img.shields.io/badge/%F0%9F%A5%9A-Hatch-4051b5.svg)](https://github.com/pypa/hatch)\n
.. image:: https://img.shields.io/badge/%F0%9F%A5%9A-Hatch-4051b5.svg\n   :alt: Hatch project\n   :target: https://github.com/pypa/hatch\n
"},{"location":"publish/","title":"Publishing","text":"

After your project is built, you can distribute it using the publish command.

The -p/--publisher option controls which publisher to use, with the default being index.

"},{"location":"publish/#artifact-selection","title":"Artifact selection","text":"

By default, the dist directory located at the root of your project will be used:

$ hatch publish\ndist/hatch_demo-1rc0-py3-none-any.whl ... success\ndist/hatch_demo-1rc0.tar.gz ... success\n\n[hatch-demo]\nhttps://pypi.org/project/hatch-demo/1rc0/\n

You can instead pass specific paths as arguments:

hatch publish /path/to/artifacts foo-1.tar.gz\n

Only files ending with .whl or .tar.gz will be published.

"},{"location":"publish/#repository","title":"Repository","text":"

You can select the repository with which to upload using the -r/--repo option or by setting the HATCH_INDEX_REPO environment variable.

Rather than specifying the full URL of a repository, you can use a named repository from a publish.index.repos table defined in Hatch's config file:

config.toml 
[publish.index.repos.private]\nurl = \"...\"\n...\n

The following repository names are reserved by Hatch and cannot be overridden:

Name Repository main https://upload.pypi.org/legacy/ test https://test.pypi.org/legacy/

The main repository is used by default.

"},{"location":"publish/#authentication","title":"Authentication","text":"

The first time you publish to a repository you need to authenticate using the -u/--user (environment variable HATCH_INDEX_USER) and -a/--auth (environment variable HATCH_INDEX_AUTH) options. You will be prompted if either option is not provided.

The user that most recently published to the chosen repository is cached, with their credentials saved to the system keyring, so that they will no longer need to provide authentication information.

For automated releasing to PyPI, it is recommended that you use per-project API tokens.

"},{"location":"publish/#confirmation","title":"Confirmation","text":"

You can require a confirmation prompt or use of the -y/--yes flag by setting publishers' disable option to true in either Hatch's config file or project-specific configuration (which takes precedence):

config.toml pyproject.toml hatch.toml 
[publish.index]\ndisable = true\n
[tool.hatch.publish.index]\ndisable = true\n
[publish.index]\ndisable = true\n
"},{"location":"version/","title":"Versioning","text":""},{"location":"version/#configuration","title":"Configuration","text":"

When the version is not statically set, configuration is defined in the tool.hatch.version table. The source option determines the source to use for retrieving and updating the version. The regex source is used by default.

The regex source requires an option path that represents a relative path to a file containing the project's version:

pyproject.toml hatch.toml 
[tool.hatch.version]\npath = \"src/hatch_demo/__about__.py\"\n
[version]\npath = \"src/hatch_demo/__about__.py\"\n

The default pattern looks for a variable named __version__ or VERSION that is set to a string containing the version, optionally prefixed with the lowercase letter v.

If this doesn't reflect how you store the version, you can define a different regular expression using the pattern option:

pyproject.toml hatch.toml 
[tool.hatch.version]\npath = \"pkg/__init__.py\"\npattern = \"BUILD = 'b(?P<version>[^']+)'\"\n
[version]\npath = \"pkg/__init__.py\"\npattern = \"BUILD = 'b(?P<version>[^']+)'\"\n

The pattern must have a named group called version that represents the version.

"},{"location":"version/#display","title":"Display","text":"

Invoking the version command without any arguments will display the current version of the project:

$ hatch version\n0.0.1\n
"},{"location":"version/#updating","title":"Updating","text":"

You can update the version like so:

$ hatch version \"0.1.0\"\nOld: 0.0.1\nNew: 0.1.0\n

The scheme option determines the scheme to use for parsing both the existing and new versions. The standard scheme is used by default, which is based on PEP 440.

Rather than setting the version explicitly, you can select the name of a segment used to increment the version:

$ hatch version minor\nOld: 0.1.0\nNew: 0.2.0\n

You can chain multiple segment updates with a comma. For example, if you wanted to release a preview of your project's first major version, you could do:

$ hatch version major,rc\nOld: 0.2.0\nNew: 1.0.0rc0\n

When you want to release the final version, you would do:

$ hatch version release\nOld: 1.0.0rc0\nNew: 1.0.0\n
"},{"location":"version/#supported-segments","title":"Supported segments","text":"

Here are the supported segments and how they would influence an existing version of 1.0.0:

Segments New version release 1.0.0 major 2.0.0 minor 1.1.0 micropatchfix 1.0.1 aalpha 1.0.0a0 bbeta 1.0.0b0 crcprepreview 1.0.0rc0 rrevpost 1.0.0.post0 dev 1.0.0.dev0"},{"location":"why/","title":"Why Hatch?","text":"

The high level value proposition of Hatch is that if one adopts all functionality then many other tools become unnecessary since there is support for everything one might require. Further, if one chooses to use only specific features then there are still benefits compared to alternatives.

"},{"location":"why/#build-backend","title":"Build backend","text":"

Hatchling, the build backend sister project, has many benefits compared to setuptools. Here we only compare setuptools as that is the one most people are familiar with.

Why not?:

If building extension modules is required then it is recommended that you continue using setuptools, or even other backends that specialize in interfacing with compilers.

"},{"location":"why/#environment-management","title":"Environment management","text":"

Here we compare to both tox and nox. At a high level, there are a few common advantages:

Why not?:

If you are using nox and you wish to migrate, and for some reason you notify sessions, then migration wouldn't be a straight translation but rather you might have to redesign that conditional step.

"},{"location":"why/#python-management","title":"Python management","text":"

Here we compare Python management to that of pyenv.

Why not?:

Currently, Hatch does not allow for the installation of specific patch release versions but rather only uses minor release granularity that tracks the latest patch release. If specific patch releases are important to you then it is best to use an alternative installation mechanism.

"},{"location":"blog/","title":"Blog","text":""},{"location":"blog/2022/10/08/hatch-v160/","title":"Hatch v1.6.0","text":"

Hatch v1.6.0 brings improvements to build environments, better handling of dynamic metadata, and support for tools like Visual Studio Code.

"},{"location":"blog/2022/10/08/hatch-v160/#build-environments","title":"Build environments","text":"

Originally, the environment interface method for providing builder sub-environments was intended to be used in conjunction with some cleanup logic in order to provide a fresh setup every time. However, this is unnecessary in practice because build dependencies rarely change.

Without caching, repeat build environment use is slow which affects the following scenarios:

Now a new environment interface method build_environment_exists is used by Hatch to determine whether or not it has already been created, for implementations that have a caching mechanism.

The virtual environment type now uses this method to cache build environments.

"},{"location":"blog/2022/10/08/hatch-v160/#project-metadata","title":"Project metadata","text":"

Dynamically defined metadata is now supported everywhere, thanks to the new caching of virtual build environments.

A project metadata command is introduced that displays the fully resolved metadata. The output format is JSON unless a field is specified as an argument.

For example, if you checkout a project that is built by Hatch, like FastAPI, and run:

hatch project metadata readme\n

only the readme text will be displayed. If the content is in Markdown, then Rich will render it directly in your terminal:

"},{"location":"blog/2022/10/08/hatch-v160/#virtual-environment-location","title":"Virtual environment location","text":"

The virtual environment type now uses a flat layout for storage in the configured virtual environment directory if the directory resides somewhere within the project root or if it is set to a .virtualenvs directory within the user's home directory.

For example, if you define the following Hatch configuration:

config.toml 
[dirs.env]\nvirtual = \".hatch\"\n

and the following matrix:

pyproject.toml hatch.toml 
[[tool.hatch.envs.test.matrix]]\npython = [\"3.7\", \"3.8\", \"3.9\", \"3.10\", \"3.11\"]\n
[[envs.test.matrix]]\npython = [\"3.7\", \"3.8\", \"3.9\", \"3.10\", \"3.11\"]\n

then locating environments with the following command:

hatch env find test\n

will show that the general directory structure is:

.hatch\n\u251c\u2500\u2500 test.py3.7\n\u251c\u2500\u2500 test.py3.8\n\u251c\u2500\u2500 test.py3.9\n\u251c\u2500\u2500 test.py3.10\n\u2514\u2500\u2500 test.py3.11\n

This flat structure is required for detection of virtual environments by tools like Visual Studio Code and PyCharm.

Additionally, the virtual environment type now supports a path option to specify an explicit path that all inherited environments will share, such as the common .venv.

"},{"location":"blog/2022/10/08/hatch-v160/#migration-script-improvements","title":"Migration script improvements","text":"

The script used to migrate existing projects from setuptools has been improved to handle more edge cases that were encountered in the wild and now no longer modifies the formatting of existing pyproject.toml configuration.

"},{"location":"blog/2022/10/08/hatch-v160/#hatchling","title":"Hatchling","text":"

Hatch now depends on Hatchling v1.11.0, which was also just released.

"},{"location":"blog/2022/10/08/hatch-v160/#environment-version-source","title":"Environment version source","text":"

A new env version source is available that allows for the project version to be defined by an environment variable.

"},{"location":"blog/2022/10/08/hatch-v160/#relaxed-version-bumping","title":"Relaxed version bumping","text":"

The standard version scheme now supports a validate-bump option that when set to false will forego the check when updating the version that the desired version is higher than the current version.

This use case comes from Project Jupyter:

A common pattern we use in Jupyter is to bump to a .dev0 minor version bump after making a release. If we have a bug fix that needs to go out in the interim, we'd rather not be forced to create a branch every time.

"},{"location":"blog/2023/12/11/hatch-v180/","title":"Hatch v1.8.0","text":"

Hatch v1.8.0 brings Python distribution management, static analysis and formatting backed by Ruff, and binaries for every platform.

"},{"location":"blog/2023/12/11/hatch-v180/#installation-made-easy","title":"Installation made easy","text":"

One thing that has been a perpetual problem for Hatch and other Python applications is that Python itself is a dependency. You, and more importantly your users, need to in some way get Python before your software can even be used. The recommended way to go about that is platform-dependent and even differs based on your target audience. I viewed this as a central UX problem for Hatch and so severe that I took a bit of a hiatus to solve it.

Luckily, I have to my satisfaction solved this problem in the form of PyApp. It is a runtime installer for Python projects written in Rust. Apps are distributed as standalone executables as users have come to expect and bootstrapping occurs upon the first invocation. Here is an example of what you would see the first time you run a binary from this release:

Now that we have binaries, creating installers for different platforms becomes trivial. Starting with this release not only are binaries available for every platform but also we have installers for Windows and macOS. The installer for macOS is signed using a certificate from the same account used to sign the official distributions from https://www.python.org, so users will not get any security pop-ups. Shout out to @ewdurbin for their extreme generosity in setting up multiple certificates in their free time!

These installers and binaries are now the recommended way to install and update Hatch. These binaries have built-in management so you can update to the latest version by running hatch self update.

Windows signing

In future we will sign the installers for Windows but I did not have time to look into how that works. macOS signing took way longer than I anticipated

"},{"location":"blog/2023/12/11/hatch-v180/#python-management","title":"Python management","text":"

For a long time I and other users have desired that Hatch gain the ability to manage Python distributions. In my mind this was always blocked on a better installation experience because there was sort of a chicken-or-egg problem where you want a Python manager but you first need Python. No longer is that the case!

The new python command group allows for easy installation of various distributions to arbitrary locations which are then added to your PATH by default. Hatch supports CPython and PyPy distributions:

"},{"location":"blog/2023/12/11/hatch-v180/#virtual-environment-python-resolution","title":"Virtual environment Python resolution","text":"

The virtual environment type is now far more intelligent when resolving the parent distribution to use and guarantees that, when no specific version is requested, the resolved distribution will always be compatible with the project.

Additionally, when a requested version cannot be found on PATH it will automatically be downloaded and managed internally.

"},{"location":"blog/2023/12/11/hatch-v180/#static-analysis","title":"Static analysis","text":"

There is a new fmt command, backed entirely by Ruff, that checks and fixes your code for formatting and linting issues.

Starting with this release, Hatch maintains default settings that are guaranteed to be up-to-date and represent best practices for programming in modern Python. The idea is to provide defaults that are so broadly applicable that the majority of users will maintain little if any of their own overrides.

The default behavior is internal management of settings to provide an OOTB experience that works. It is recommended however that you persist the default config file in version control so that other tools like IDEs can utilize your full configuration.

Since Ruff is now provided as a built-in feature, new project templates no longer have such configuration and are much less verbose.

"},{"location":"blog/2023/12/11/hatch-v180/#build-improvements","title":"Build improvements","text":"

Building projects that do not use Hatchling as a backend is now supported and such builds are managed with the standard build tool.

The bridge between Hatch and the Hatchling CLI has been removed. Previously, the builder would send serialized messages to Hatch that would contain the desired content and style for each line of output. This was done in an effort to allow builder and build hook plugins to output pretty messages without actually requiring a dependency like Rich. A problem that arises with this is that builders that invoke subprocesses will not display ANSI codes as one might expect and will lose out on the interactive experience of such invocations, like the built-in app builder plugin calling cargo build. So now everything is simpler at the expense of no colored output without manual logic, or adding a dependency if you're a third-party plugin.

"},{"location":"blog/2023/12/11/hatch-v180/#faster-environment-usage","title":"Faster environment usage","text":"

Spawning a shell or running commands within environments always first checks that your project's dependencies are satisfied and if not synchronizes the environment with what is defined. Previously, this had the potential to be quite slow for projects that have many dependencies.

Now the set of dependency definitions is hashed and no check is performed if the hash is the same as before, significantly speeding up environment usage in most cases.

"},{"location":"blog/2023/12/11/hatch-v180/#hatchling","title":"Hatchling","text":"

Hatch now depends on Hatchling v1.19.0, which was also just released.

"},{"location":"blog/2023/12/11/hatch-v180/#better-defaults","title":"Better defaults","text":"

Hatchling is all about providing the best possible defaults, even at the expense of backward compatibility. In this release, there are two breaking changes that provide a much better user experience and were in fact requested by users.

"},{"location":"blog/2023/12/11/hatch-v180/#app-build-target","title":"App build target","text":"

A new app build target is now stable that allows for the building of standalone binaries for projects. This is what Hatch itself uses for its binaries.

"},{"location":"blog/2023/12/11/hatch-v180/#meta","title":"Meta","text":""},{"location":"blog/2023/12/11/hatch-v180/#why-hatch","title":"Why Hatch?","text":"

A new page has been introduced that discusses the value proposition of Hatch and Hatchling in comparison to alternatives. Currently, it only addresses a few features but in future this page will become more comprehensive.

"},{"location":"blog/2023/12/11/hatch-v180/#future","title":"Future","text":"

Upcoming features include a test command, commands to manage dependencies, and workspaces functionality similar to Cargo that will make managing monorepos far easier.

Next year there will be two large efforts that you should expect to see:

  1. A significant amount of my free time (and some at work) will be devoted to introducing lock file functionality in Hatch and trying to get whatever that happens to be standardized.

    I met with @brettcannon about his thoughts post-PEP 665 and about mousebender. I also met with the prefix.dev team about rip and was fortunate enough to be shown a demo before its official announcement.

    At the moment, the two options I see are to either go all in and contribute to mousebender or rely on the Prefix folks and use rip. The latter has the benefit of potentially supporting Conda as a side effect with the downside of being quite new with the spec firmly out of our control. The former has the benefit of being able to easily gain institutional support from the Python packaging team and each of our employers with the downside being a significant amount of work needing to be done.

  2. When @henryiii is able to get some free time away from teaching I plan to work with him once again and push very hard for the Python build ecosystem to adopt the extensionlib approach.

    I am of the opinion that the Python community has not fully completed the expressed outcome of PEP 517 in that build backends are still (for the most part) reliant on setuptools for building non-Python code bases.

    Basically, there are components that interact with compilers to produce extension modules and components that pack files into an archive which we call a build backend. These are two distinct pieces of functionality and my view is that there should be an API that allows backends to consume extension module builders to find out where things got created and where they should be shipped inside archives.

    In this hypothetical future any build backend would be able to trigger the building of extension modules based on user configuration.

"},{"location":"blog/2023/12/11/hatch-v180/#support","title":"Support","text":"

If you or your organization finds value in what Hatch provides, consider a sponsorship to assist with maintenance and more rapid development!

"},{"location":"blog/2023/12/18/hatch-v190/","title":"Hatch v1.9.0","text":"

Hatch v1.9.0 brings improvements to static analysis and important bug fixes.

"},{"location":"blog/2023/12/18/hatch-v190/#static-analysis","title":"Static analysis","text":"

The default version of Ruff has been increased to v0.1.8. This release brings formatting capabilities to docstrings and Hatch enables this by default with line length set to 80. This length was chosen as the default because it plays nicely with the rendering of the most popular themes for Python documentation, such as Material for MkDocs and Furo.

Additionally, it is now possible for projects to pin to specific versions of Ruff for upgrading at a later time:

pyproject.toml hatch.toml 
[tool.hatch.envs.hatch-static-analysis]\ndependencies = [\"ruff==X.Y.Z\"]\n
[envs.hatch-static-analysis]\ndependencies = [\"ruff==X.Y.Z\"]\n
"},{"location":"blog/2023/12/18/hatch-v190/#notable-fixes","title":"Notable fixes","text":""},{"location":"cli/about/","title":"About","text":""},{"location":"cli/about/#verbosity","title":"Verbosity","text":"

The amount of displayed output is controlled solely by the -v/--verbose (environment variable HATCH_VERBOSE) and -q/--quiet (environment variable HATCH_QUIET) root options.

The levels are documented here.

"},{"location":"cli/about/#project-awareness","title":"Project awareness","text":"

No matter the mode, Hatch will always change to the project's root directory for entering or running commands in environments.

"},{"location":"cli/about/#tab-completion","title":"Tab completion","text":"

Completion is achieved by saving a script and then executing it as a part of your shell's startup sequence.

Afterward, you'll need to start a new shell in order for the changes to take effect.

BashZ shellfish

Save the script somewhere:

_HATCH_COMPLETE=bash_source hatch > ~/.hatch-complete.bash\n

Source the file in ~/.bashrc (or ~/.bash_profile if on macOS):

. ~/.hatch-complete.bash\n

Save the script somewhere:

_HATCH_COMPLETE=zsh_source hatch > ~/.hatch-complete.zsh\n

Source the file in ~/.zshrc:

. ~/.hatch-complete.zsh\n

Save the script in ~/.config/fish/completions:

_HATCH_COMPLETE=fish_source hatch > ~/.config/fish/completions/hatch.fish\n
"},{"location":"cli/reference/","title":"hatch","text":"

Usage:

hatch [OPTIONS] COMMAND [ARGS]...\n

Options:

Name Type Description Default --env, -e text The name of the environment to use [env var: HATCH_ENV] default --project, -p text The name of the project to work on [env var: HATCH_PROJECT] None --verbose, -v integer range (0 and above) Increase verbosity (can be used additively) [env var: HATCH_VERBOSE] 0 --quiet, -q integer range (0 and above) Decrease verbosity (can be used additively) [env var: HATCH_QUIET] 0 --color / --no-color boolean Whether or not to display colored output (default is auto-detection) [env vars: FORCE_COLOR/NO_COLOR] None --interactive / --no-interactive boolean Whether or not to allow features like prompts and progress bars (default is auto-detection) [env var: HATCH_INTERACTIVE] None --data-dir text The path to a custom directory used to persist data [env var: HATCH_DATA_DIR] None --cache-dir text The path to a custom directory used to cache data [env var: HATCH_CACHE_DIR] None --config text The path to a custom config file to use [env var: HATCH_CONFIG] None --version boolean Show the version and exit. False --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-build","title":"hatch build","text":"

Build a project.

Usage:

hatch build [OPTIONS] [LOCATION]\n

Options:

Name Type Description Default --target, -t text The target to build, overriding project defaults. This may be selected multiple times e.g. -t sdist -t wheel None --hooks-only boolean Whether or not to only execute build hooks [env var: HATCH_BUILD_HOOKS_ONLY] False --no-hooks boolean Whether or not to disable build hooks [env var: HATCH_BUILD_NO_HOOKS] False --ext boolean Whether or not to only execute build hooks for distributing binary Python packages, such as compiling extensions. Equivalent to --hooks-only -t wheel False --clean, -c boolean Whether or not existing artifacts should first be removed [env var: HATCH_BUILD_CLEAN] False --clean-hooks-after boolean Whether or not build hook artifacts should be removed after each build [env var: HATCH_BUILD_CLEAN_HOOKS_AFTER] False --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-clean","title":"hatch clean","text":"

Remove build artifacts.

Usage:

hatch clean [OPTIONS] [LOCATION]\n

Options:

Name Type Description Default --target, -t text The target with which to remove artifacts, overriding project defaults. This may be selected multiple times e.g. -t sdist -t wheel None --hooks-only boolean Whether or not to only remove artifacts from build hooks [env var: HATCH_BUILD_HOOKS_ONLY] False --no-hooks boolean Whether or not to ignore artifacts from build hooks [env var: HATCH_BUILD_NO_HOOKS] False --ext boolean Whether or not to only remove artifacts from build hooks for distributing binary Python packages, such as compiled extensions. Equivalent to --hooks-only -t wheel False --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-config","title":"hatch config","text":"

Manage the config file

Usage:

hatch config [OPTIONS] COMMAND [ARGS]...\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-config-explore","title":"hatch config explore","text":"

Open the config location in your file manager.

Usage:

hatch config explore [OPTIONS]\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-config-find","title":"hatch config find","text":"

Show the location of the config file.

Usage:

hatch config find [OPTIONS]\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-config-restore","title":"hatch config restore","text":"

Restore the config file to default settings.

Usage:

hatch config restore [OPTIONS]\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-config-set","title":"hatch config set","text":"

Assign values to config file entries. If the value is omitted, you will be prompted, with the input hidden if it is sensitive.

Usage:

hatch config set [OPTIONS] KEY [VALUE]\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-config-show","title":"hatch config show","text":"

Show the contents of the config file.

Usage:

hatch config show [OPTIONS]\n

Options:

Name Type Description Default --all, -a boolean Do not scrub secret fields False --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-config-update","title":"hatch config update","text":"

Update the config file with any new fields.

Usage:

hatch config update [OPTIONS]\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-dep","title":"hatch dep","text":"

Manage environment dependencies

Usage:

hatch dep [OPTIONS] COMMAND [ARGS]...\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-dep-hash","title":"hatch dep hash","text":"

Output a hash of the currently defined dependencies.

Usage:

hatch dep hash [OPTIONS]\n

Options:

Name Type Description Default --project-only, -p boolean Whether or not to exclude environment dependencies False --env-only, -e boolean Whether or not to exclude project dependencies False --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-dep-show","title":"hatch dep show","text":"

Display dependencies in various formats

Usage:

hatch dep show [OPTIONS] COMMAND [ARGS]...\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-dep-show-requirements","title":"hatch dep show requirements","text":"

Enumerate dependencies as a list of requirements.

Usage:

hatch dep show requirements [OPTIONS]\n

Options:

Name Type Description Default --project-only, -p boolean Whether or not to exclude environment dependencies False --env-only, -e boolean Whether or not to exclude project dependencies False --feature, -f text Whether or not to only show the dependencies of the specified features None --all boolean Whether or not to include the dependencies of all features False --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-dep-show-table","title":"hatch dep show table","text":"

Enumerate dependencies in a tabular format.

Usage:

hatch dep show table [OPTIONS]\n

Options:

Name Type Description Default --project-only, -p boolean Whether or not to exclude environment dependencies False --env-only, -e boolean Whether or not to exclude project dependencies False --lines, -l boolean Whether or not to show lines between table rows False --ascii boolean Whether or not to only use ASCII characters False --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-env","title":"hatch env","text":"

Manage project environments

Usage:

hatch env [OPTIONS] COMMAND [ARGS]...\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-env-create","title":"hatch env create","text":"

Create environments.

Usage:

hatch env create [OPTIONS] [ENV_NAME]\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-env-find","title":"hatch env find","text":"

Locate environments.

Usage:

hatch env find [OPTIONS] [ENV_NAME]\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-env-prune","title":"hatch env prune","text":"

Remove all environments.

Usage:

hatch env prune [OPTIONS]\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-env-remove","title":"hatch env remove","text":"

Remove environments.

Usage:

hatch env remove [OPTIONS] [ENV_NAME]\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-env-run","title":"hatch env run","text":"

Run commands within project environments.

The -e/--env option overrides the equivalent root option and the HATCH_ENV environment variable.

If environments provide matrices, then you may use the -i/--include and -x/--exclude options to select or exclude certain variables, optionally followed by specific comma-separated values. For example, if you have the following configuration:

pyproject.toml hatch.toml 
[[tool.hatch.envs.test.matrix]]\npython = [\"3.9\", \"3.10\"]\nversion = [\"42\", \"3.14\", \"9000\"]\n
[[envs.test.matrix]]\npython = [\"3.9\", \"3.10\"]\nversion = [\"42\", \"3.14\", \"9000\"]\n

then running:

hatch env run -i py=3.10 -x version=9000 test:pytest\n

would execute pytest in the environments test.py3.10-42 and test.py3.10-3.14. Note that py may be used as an alias for python.

Usage:

hatch env run [OPTIONS] ARGS...\n

Options:

Name Type Description Default --env, -e text The environments to target None --include, -i text The matrix variables to include None --exclude, -x text The matrix variables to exclude None --filter, -f text The JSON data used to select environments None --force-continue boolean Run every command and if there were any errors exit with the first code False --ignore-compat boolean Ignore incompatibility when selecting specific environments False --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-env-show","title":"hatch env show","text":"

Show the available environments.

Usage:

hatch env show [OPTIONS] [ENVS]...\n

Options:

Name Type Description Default --ascii boolean Whether or not to only use ASCII characters False --json boolean Whether or not to output in JSON format False --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-fmt","title":"hatch fmt","text":"

Format and lint source code.

Usage:

hatch fmt [OPTIONS] [ARGS]...\n

Options:

Name Type Description Default --check boolean Only check for errors rather than fixing them False --preview / --no-preview boolean Preview new rules and formatting None --linter, -l boolean Only run the linter False --formatter, -f boolean Only run the formatter False --sync boolean Sync the default config file with the current version of Hatch False --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-new","title":"hatch new","text":"

Create or initialize a project.

Usage:

hatch new [OPTIONS] [NAME] [LOCATION]\n

Options:

Name Type Description Default --interactive, -i boolean Interactively choose details about the project False --cli boolean Give the project a command line interface False --init boolean Initialize an existing project False --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-project","title":"hatch project","text":"

View project information

Usage:

hatch project [OPTIONS] COMMAND [ARGS]...\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-project-metadata","title":"hatch project metadata","text":"

Display project metadata.

If you want to view the raw readme file without rendering, you can use a JSON parser like jq:

hatch project metadata | jq -r .readme\n

Usage:

hatch project metadata [OPTIONS] [FIELD]\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-publish","title":"hatch publish","text":"

Publish build artifacts.

Usage:

hatch publish [OPTIONS] [ARTIFACTS]...\n

Options:

Name Type Description Default --repo, -r text The repository with which to publish artifacts [env var: HATCH_INDEX_REPO] None --user, -u text The user with which to authenticate [env var: HATCH_INDEX_USER] None --auth, -a text The credentials to use for authentication [env var: HATCH_INDEX_AUTH] None --ca-cert text The path to a CA bundle [env var: HATCH_INDEX_CA_CERT] None --client-cert text The path to a client certificate, optionally containing the private key [env var: HATCH_INDEX_CLIENT_CERT] None --client-key text The path to the client certificate's private key [env var: HATCH_INDEX_CLIENT_KEY] None --no-prompt, -n boolean Disable prompts, such as for missing required fields False --initialize-auth boolean Save first-time authentication information even if nothing was published False --publisher, -p text The publisher plugin to use (default is index) [env var: HATCH_PUBLISHER] index --option, -o text Options to pass to the publisher plugin. This may be selected multiple times e.g. -o foo=bar -o baz=23 [env var: HATCH_PUBLISHER_OPTIONS] None --yes, -y boolean Confirm without prompting when the plugin is disabled False --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-python","title":"hatch python","text":"

Manage Python installations

Usage:

hatch python [OPTIONS] COMMAND [ARGS]...\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-python-find","title":"hatch python find","text":"

Locate Python binaries.

Usage:

hatch python find [OPTIONS] NAME\n

Options:

Name Type Description Default -p, --parent boolean Show the parent directory of the Python binary False --dir, -d text The directory in which distributions reside None --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-python-install","title":"hatch python install","text":"

Install Python distributions.

You may select all to install all compatible distributions:

hatch python install all\n

Usage:

hatch python install [OPTIONS] NAMES...\n

Options:

Name Type Description Default --private boolean Do not add distributions to the user PATH False --update, -u boolean Update existing installations False --dir, -d text The directory in which to install distributions, overriding configuration None --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-python-remove","title":"hatch python remove","text":"

Remove Python distributions.

You may select all to remove all installed distributions:

hatch python remove all\n

Usage:

hatch python remove [OPTIONS] NAMES...\n

Options:

Name Type Description Default --dir, -d text The directory in which distributions reside None --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-python-show","title":"hatch python show","text":"

Show the available Python distributions.

Usage:

hatch python show [OPTIONS]\n

Options:

Name Type Description Default --ascii boolean Whether or not to only use ASCII characters False --dir, -d text The directory in which distributions reside None --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-python-update","title":"hatch python update","text":"

Update Python distributions.

You may select all to update all installed distributions:

hatch python update all\n

Usage:

hatch python update [OPTIONS] NAMES...\n

Options:

Name Type Description Default --dir, -d text The directory in which distributions reside None --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-run","title":"hatch run","text":"

Run commands within project environments. This is a convenience wrapper around the env run command.

If the first argument contains a colon, then the preceding component will be interpreted as the name of the environment to target, overriding the -e/--env root option and the HATCH_ENV environment variable.

If the environment provides matrices, then you may also provide leading arguments starting with a + or - to select or exclude certain variables, optionally followed by specific comma-separated values. For example, if you have the following configuration:

pyproject.toml hatch.toml 
[[tool.hatch.envs.test.matrix]]\npython = [\"3.9\", \"3.10\"]\nversion = [\"42\", \"3.14\", \"9000\"]\n
[[envs.test.matrix]]\npython = [\"3.9\", \"3.10\"]\nversion = [\"42\", \"3.14\", \"9000\"]\n

then running:

hatch run +py=3.10 -version=9000 test:pytest\n

would execute pytest in the environments test.py3.10-42 and test.py3.10-3.14. Note that py may be used as an alias for python.

Usage:

hatch run [OPTIONS] [ENV:]ARGS...\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-shell","title":"hatch shell","text":"

Enter a shell within a project's environment.

Usage:

hatch shell [OPTIONS] [SHELL_NAME] [SHELL_PATH] [SHELL_ARGS]...\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-status","title":"hatch status","text":"

Show information about the current environment.

Usage:

hatch status [OPTIONS]\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-version","title":"hatch version","text":"

View or set a project's version.

Usage:

hatch version [OPTIONS] [DESIRED_VERSION]\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"community/contributing/","title":"Contributing","text":"

The usual process to make a contribution is to:

  1. Check for existing related issues
  2. Fork the repository and create a new branch
  3. Make your changes
  4. Make sure formatting, linting and tests passes.
  5. Add tests if possible to cover the lines you added.
  6. Commit, and send a Pull Request.
"},{"location":"community/contributing/#clone-the-repository","title":"Clone the repository","text":"

Clone the hatch repository, cd into it, and create a new branch for your contribution:

cd hatch\ngit checkout -b add-my-contribution\n
"},{"location":"community/contributing/#run-the-tests","title":"Run the tests","text":"

Run the test suite while developing:

hatch run dev\n

Run the test suite with coverage report:

hatch run cov\n

Run the extended test suite with coverage:

hatch run full\n
"},{"location":"community/contributing/#lint","title":"Lint","text":"

Run automated formatting:

hatch run lint:fmt\n

Run full linting and type checking:

hatch run lint:all\n
"},{"location":"community/contributing/#docs","title":"Docs","text":"

Start the documentation in development:

hatch run docs:serve\n

Build and validate the documentation website:

hatch run build-check\n
"},{"location":"community/highlights/","title":"Highlights","text":""},{"location":"community/highlights/#integration","title":"Integration","text":""},{"location":"community/highlights/#adoption","title":"Adoption","text":""},{"location":"community/users/","title":"Users","text":"

The following is not intended to be a complete enumeration. Be sure to view the development version of this page for an up-to-date listing.

"},{"location":"community/users/#projects","title":"Projects","text":"

aiogram | argon2-cffi | attrs | Black | coffea | Colorama | Django Anymail | Django Debug Toolbar | Django Wiki | FastAPI | filelock | github3.py | Gradio | HTTPX | iCalendar for Humans | LinkChecker | Material for MkDocs | MkDocs | openSUSE | Nox | Packit | pipx | platformdirs | Pydantic | Pygments | PyHamcrest | PyMdown Extensions | Python JSON Schema | Rye | SALib | Spack | Starlette | structlog | tox | Twisted | urllib3 | Uvicorn | virtualenv | Voil\u00e0 | XGBoost | Ypy

"},{"location":"community/users/#industry","title":"Industry","text":""},{"location":"community/users/#organizations","title":"Organizations","text":""},{"location":"community/users/#government","title":"Government","text":""},{"location":"community/users/#academia","title":"Academia","text":""},{"location":"community/users/#research","title":"Research","text":""},{"location":"community/users/#security","title":"Security","text":""},{"location":"community/users/#crypto","title":"Crypto","text":""},{"location":"config/build/","title":"Build configuration","text":"

Build targets are defined as sections within tool.hatch.build.targets:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.<TARGET_NAME>]\n
[build.targets.<TARGET_NAME>]\n

Tip

Although not recommended, you may define global configuration in the tool.hatch.build table. Keys may then be overridden by target config.

"},{"location":"config/build/#build-system","title":"Build system","text":"

To be compatible with the broader Python packaging ecosystem, you must define the build system as follows:

pyproject.toml 
[build-system]\nrequires = [\"hatchling\"]\nbuild-backend = \"hatchling.build\"\n

The version of hatchling defined here will be used to build all targets.

Hatchling is a standards-compliant1 build backend and is a dependency of Hatch itself.

"},{"location":"config/build/#file-selection","title":"File selection","text":""},{"location":"config/build/#vcs","title":"VCS","text":"

By default, Hatch will respect the first .gitignore or .hgignore file found in your project's root directory or parent directories. Set ignore-vcs to true to disable this behavior:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.sdist]\nignore-vcs = true\n
[build.targets.sdist]\nignore-vcs = true\n

Note

For .hgignore files only glob syntax is supported.

"},{"location":"config/build/#patterns","title":"Patterns","text":"

You can set the include and exclude options to select exactly which files will be shipped in each build, with exclude taking precedence. Every entry represents a Git-style glob pattern.

For example, the following configuration:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.sdist]\ninclude = [\n  \"pkg/*.py\",\n  \"/tests\",\n]\nexclude = [\n  \"*.json\",\n  \"pkg/_compat.py\",\n]\n
[build.targets.sdist]\ninclude = [\n  \"pkg/*.py\",\n  \"/tests\",\n]\nexclude = [\n  \"*.json\",\n  \"pkg/_compat.py\",\n]\n

will exclude every file with a .json extension, and will include everything under a tests directory located at the root and every file with a .py extension that is directly under a pkg directory located at the root except for _compat.py.

"},{"location":"config/build/#artifacts","title":"Artifacts","text":"

If you want to include files that are ignored by your VCS, such as those that might be created by build hooks, you can use the artifacts option. This option is semantically equivalent to include.

Note that artifacts are not affected by the exclude option. Artifacts can be excluded by using more explicit paths or by using the ! negation operator. When using the ! operator, the negated pattern(s) must come after the more generic ones.

pyproject.toml hatch.toml 
[tool.hatch.build.targets.wheel]\nartifacts = [\n  \"*.so\",\n  \"*.dll\",\n  \"!/foo/*.so\",\n]\n
[build.targets.wheel]\nartifacts = [\n  \"*.so\",\n  \"*.dll\",\n  \"!/foo/*.so\",\n]\n
"},{"location":"config/build/#explicit-selection","title":"Explicit selection","text":""},{"location":"config/build/#generic","title":"Generic","text":"

You can use the only-include option to prevent directory traversal starting at the project root and only select specific relative paths to directories or files. Using this option ignores any defined include patterns.

pyproject.toml hatch.toml 
[tool.hatch.build.targets.sdist]\nonly-include = [\"pkg\", \"tests/unit\"]\n
[build.targets.sdist]\nonly-include = [\"pkg\", \"tests/unit\"]\n
"},{"location":"config/build/#packages","title":"Packages","text":"

The packages option is semantically equivalent to only-include (which takes precedence) except that the shipped path will be collapsed to only include the final component.

So for example, if you want to ship a package foo that is stored in a directory src you would do:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.wheel]\npackages = [\"src/foo\"]\n
[build.targets.wheel]\npackages = [\"src/foo\"]\n
"},{"location":"config/build/#forced-inclusion","title":"Forced inclusion","text":"

The force-include option allows you to select specific files or directories from anywhere on the file system that should be included and map them to the desired relative distribution path.

For example, if there was a directory alongside the project root named artifacts containing a file named lib.so and a file named lib.h in your home directory, you could ship both files in a pkg directory with the following configuration:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.wheel.force-include]\n\"../artifacts\" = \"pkg\"\n\"~/lib.h\" = \"pkg/lib.h\"\n
[build.targets.wheel.force-include]\n\"../artifacts\" = \"pkg\"\n\"~/lib.h\" = \"pkg/lib.h\"\n

Note

Warning

Files included using this option will overwrite any file path that was already included by other file selection options.

"},{"location":"config/build/#default-file-selection","title":"Default file selection","text":"

If no file selection options are provided, then what gets included is determined by each build target.

"},{"location":"config/build/#excluding-files-outside-packages","title":"Excluding files outside packages","text":"

If you want to exclude non-artifact files that do not reside within a Python package, set only-packages to true:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.wheel]\nonly-packages = true\n
[build.targets.wheel]\nonly-packages = true\n
"},{"location":"config/build/#rewriting-paths","title":"Rewriting paths","text":"

You can rewrite relative paths to directories with the sources option. For example, the following configuration:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.wheel.sources]\n\"src/foo\" = \"bar\"\n
[build.targets.wheel.sources]\n\"src/foo\" = \"bar\"\n

would distribute the file src/foo/file.ext as bar/file.ext.

If you want to remove path prefixes entirely, rather than setting each to an empty string, you can define sources as an array:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.wheel]\nsources = [\"src\"]\n
[build.targets.wheel]\nsources = [\"src\"]\n

If you want to add a prefix to paths, you can use an empty string. For example, the following configuration:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.wheel.sources]\n\"\" = \"foo\"\n
[build.targets.wheel.sources]\n\"\" = \"foo\"\n

would distribute the file bar/file.ext as foo/bar/file.ext.

The packages option itself relies on sources. Defining packages = [\"src/foo\"] for the wheel target is equivalent to the following:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.wheel]\nonly-include = [\"src/foo\"]\nsources = [\"src\"]\n
[build.targets.wheel]\nonly-include = [\"src/foo\"]\nsources = [\"src\"]\n
"},{"location":"config/build/#performance","title":"Performance","text":"

All encountered directories are traversed by default. To skip non-artifact directories that are excluded, set skip-excluded-dirs to true:

pyproject.toml hatch.toml 
[tool.hatch.build]\nskip-excluded-dirs = true\n
[build]\nskip-excluded-dirs = true\n

Warning

This may result in not shipping desired files. For example, if you want to include the file a/b/c.txt but your VCS ignores a/b, the file c.txt will not be seen because its parent directory will not be entered. In such cases you can use the force-include option.

"},{"location":"config/build/#reproducible-builds","title":"Reproducible builds","text":"

By default, build targets will build in a reproducible manner provided that they support that behavior. To disable this, set reproducible to false:

pyproject.toml hatch.toml 
[tool.hatch.build]\nreproducible = false\n
[build]\nreproducible = false\n

When enabled, the SOURCE_DATE_EPOCH environment variable will be used for all build timestamps. If not set, then Hatch will use an unchanging default value.

"},{"location":"config/build/#output-directory","title":"Output directory","text":"

When the output directory is not provided to the build command, the dist directory will be used by default. You can change the default to a different directory using a relative or absolute path like so:

pyproject.toml hatch.toml 
[tool.hatch.build]\ndirectory = \"<PATH>\"\n
[build]\ndirectory = \"<PATH>\"\n
"},{"location":"config/build/#dev-mode","title":"Dev mode","text":"

By default for dev mode environment installations or editable installs, the wheel target will determine which directories should be added to Python's search path based on the selected files.

If you want to override this detection or perhaps instruct other build targets as well, you can use the dev-mode-dirs option:

pyproject.toml hatch.toml 
[tool.hatch.build]\ndev-mode-dirs = [\".\"]\n
[build]\ndev-mode-dirs = [\".\"]\n

If you don't want to add entire directories to Python's search path, you can enable a more targeted mechanism with the mutually exclusive dev-mode-exact option:

pyproject.toml hatch.toml 
[tool.hatch.build]\ndev-mode-exact = true\n
[build]\ndev-mode-exact = true\n

Warning

The dev-mode-exact mechanism is not supported by static analysis tools & IDEs, therefore functionality such as autocompletion is unlikely to work.

"},{"location":"config/build/#build-targets","title":"Build targets","text":"

A build target can be provided by any builder plugin. There are three built-in build targets: wheel, sdist, and custom.

"},{"location":"config/build/#dependencies","title":"Dependencies","text":"

You can specify additional dependencies that will be installed in each build environment, such as for third party builders:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.your-target-name]\ndependencies = [\n  \"your-builder-plugin\"\n]\n
[build.targets.your-target-name]\ndependencies = [\n  \"your-builder-plugin\"\n]\n

You can also declare dependence on the project's runtime dependencies with the require-runtime-dependencies option:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.your-target-name]\nrequire-runtime-dependencies = true\n
[build.targets.your-target-name]\nrequire-runtime-dependencies = true\n

Additionally, you may declare dependence on specific runtime features of the project with the require-runtime-features option:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.your-target-name]\nrequire-runtime-features = [\n  \"feature1\",\n  \"feature2\",\n]\n
[build.targets.your-target-name]\nrequire-runtime-features = [\n  \"feature1\",\n  \"feature2\",\n]\n
"},{"location":"config/build/#versions","title":"Versions","text":"

If a build target supports multiple build strategies or if there are major changes over time, you can specify exactly which versions you want to build using the versions option:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.<TARGET_NAME>]\nversions = [\n  \"v1\",\n  \"beta-feature\",\n]\n
[build.targets.<TARGET_NAME>]\nversions = [\n  \"v1\",\n  \"beta-feature\",\n]\n

See the wheel target for a real world example.

"},{"location":"config/build/#build-hooks","title":"Build hooks","text":"

A build hook defines code that will be executed at various stages of the build process and can be provided by any build hook plugin. There is one built-in build hook: custom.

Build hooks can be applied either globally:

pyproject.toml hatch.toml 
[tool.hatch.build.hooks.<HOOK_NAME>]\n
[build.hooks.<HOOK_NAME>]\n

or to specific build targets:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.<TARGET_NAME>.hooks.<HOOK_NAME>]\n
[build.targets.<TARGET_NAME>.hooks.<HOOK_NAME>]\n
"},{"location":"config/build/#dependencies_1","title":"Dependencies","text":"

You can specify additional dependencies that will be installed in each build environment, such as for third party build hooks:

pyproject.toml hatch.toml 
[tool.hatch.build.hooks.your-hook-name]\ndependencies = [\n  \"your-build-hook-plugin\"\n]\n
[build.hooks.your-hook-name]\ndependencies = [\n  \"your-build-hook-plugin\"\n]\n

You can also declare dependence on the project's runtime dependencies with the require-runtime-dependencies option:

pyproject.toml hatch.toml 
[tool.hatch.build.hooks.your-hook-name]\nrequire-runtime-dependencies = true\n
[build.hooks.your-hook-name]\nrequire-runtime-dependencies = true\n

Additionally, you may declare dependence on specific runtime features of the project with the require-runtime-features option:

pyproject.toml hatch.toml 
[tool.hatch.build.hooks.your-hook-name]\nrequire-runtime-features = [\n  \"feature1\",\n  \"feature2\",\n]\n
[build.hooks.your-hook-name]\nrequire-runtime-features = [\n  \"feature1\",\n  \"feature2\",\n]\n
"},{"location":"config/build/#order-of-execution","title":"Order of execution","text":"

For each build target, build hooks execute in the order in which they are defined, starting with global hooks.

As an example, for the following configuration:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.foo.hooks.hook2]\n\n[tool.hatch.build.hooks.hook3]\n[tool.hatch.build.hooks.hook1]\n
[build.targets.foo.hooks.hook2]\n\n[build.hooks.hook3]\n[build.hooks.hook1]\n

When target foo is built, build hook hook3 will be executed first, followed by hook1, and then finally hook2.

"},{"location":"config/build/#conditional-execution","title":"Conditional execution","text":"

If you want to disable a build hook by default and control its use by environment variables, you can do so by setting the enable-by-default option to false:

pyproject.toml hatch.toml 
[tool.hatch.build.hooks.<HOOK_NAME>]\nenable-by-default = false\n
[build.hooks.<HOOK_NAME>]\nenable-by-default = false\n
"},{"location":"config/build/#environment-variables","title":"Environment variables","text":"Variable Default Description HATCH_BUILD_CLEAN false Whether or not existing artifacts should first be removed HATCH_BUILD_CLEAN_HOOKS_AFTER false Whether or not build hook artifacts should be removed after each build HATCH_BUILD_HOOKS_ONLY false Whether or not to only execute build hooks HATCH_BUILD_NO_HOOKS false Whether or not to disable all build hooks; this takes precedence over other options HATCH_BUILD_HOOKS_ENABLE false Whether or not to enable all build hooks HATCH_BUILD_HOOK_ENABLE_<HOOK_NAME> false Whether or not to enable the build hook named <HOOK_NAME> HATCH_BUILD_LOCATION dist The location with which to build the targets; only used by the build command

  1. Support for PEP 517 and PEP 660 guarantees interoperability with other build tools.\u00a0\u21a9

"},{"location":"config/context/","title":"Context formatting","text":"

You can populate configuration with the values of certain supported fields using the syntax of Python's format strings. Each field interprets the modifier part after the colon differently, if at all.

"},{"location":"config/context/#global-fields","title":"Global fields","text":"

Any configuration that declares support for context formatting will always support these fields.

"},{"location":"config/context/#paths","title":"Paths","text":"Field Description root The root project directory home The user's home directory

All paths support the following modifiers:

Modifier Description uri The normalized absolute URI path prefixed by file: real The path with all symbolic links resolved parent The parent of the preceding path

Tip

The parent modifier can be chained and may be combined with either the uri or real modifier, with the latter placed at the end. For example:

pyproject.toml hatch.toml 
[tool.hatch.envs.test]\ndependencies = [\n    \"example-project @ {root:parent:parent:uri}/example-project\",\n]\n
[envs.test]\ndependencies = [\n    \"example-project @ {root:parent:parent:uri}/example-project\",\n]\n
"},{"location":"config/context/#system-separators","title":"System separators","text":"Field Description / \\ on Windows, / otherwise ; ; on Windows, : otherwise"},{"location":"config/context/#environment-variables","title":"Environment variables","text":"

The env field and its modifier allow you to select the value of an environment variable. If the environment variable is not set, you must specify a default value as an additional modifier e.g. {env:PATH:DEFAULT}.

"},{"location":"config/context/#field-nesting","title":"Field nesting","text":"

You can insert fields within others. For example, if you wanted a script that displays the value of the environment variable FOO, with a fallback to the environment variable BAR, with its own fallback to the user's home directory, you could do the following:

pyproject.toml hatch.toml 
[tool.hatch.envs.test.scripts]\ndisplay = \"echo {env:FOO:{env:BAR:{home}}}\"\n
[envs.test.scripts]\ndisplay = \"echo {env:FOO:{env:BAR:{home}}}\"\n
"},{"location":"config/dependency/","title":"Dependency configuration","text":"

Project dependencies are defined with PEP 508 strings using optional PEP 440 version specifiers.

"},{"location":"config/dependency/#version-specifiers","title":"Version specifiers","text":"

A version specifier consists of a series of version clauses, separated by commas. For example:

pyproject.toml 
[project]\n...\ndependencies = [\n  \"cryptography\",\n  \"click>=7, <9, != 8.0.0\",\n  \"python-dateutil==2.8.*\",\n  \"numpy~=1.21.4\",\n]\n

The comma is equivalent to a logical AND operator: a candidate version must match all given version clauses in order to match the specifier as a whole.

"},{"location":"config/dependency/#operators","title":"Operators","text":"Operators Function ~= Compatible release == Version matching != Version exclusion <=, >= Inclusive ordered comparison <, > Exclusive ordered comparison === Arbitrary equality"},{"location":"config/dependency/#version-matching","title":"Version matching","text":"

A version matching clause includes the version matching operator == and a version identifier.

By default, the version matching operator is based on a strict equality comparison: the specified version must be exactly the same as the requested version.

Clause Allowed versions ==1 1.0.0 ==1.2 1.2.0

Prefix matching may be requested instead of strict comparison, by appending a trailing .* to the version identifier in the version matching clause. This means that additional trailing segments will be ignored when determining whether or not a version identifier matches the clause.

Clause Allowed versions ==1.* >=1.0.0, <2.0.0 ==1.2.* >=1.2.0, <1.3.0"},{"location":"config/dependency/#compatible-release","title":"Compatible release","text":"

A compatible release clause consists of the compatible release operator ~= and a version identifier. It matches any candidate version that is expected to be compatible with the specified version.

For a given release identifier V.N, the compatible release clause is approximately equivalent to the following pair of comparison clauses:

>= V.N, == V.*\n

This operator cannot be used with a single segment version number such as ~=1.

Clause Allowed versions ~=1.2 >=1.2.0, <2.0.0 ~=1.2.3 >=1.2.3, <1.3.0"},{"location":"config/dependency/#version-exclusion","title":"Version exclusion","text":"

A version exclusion clause includes the version exclusion operator != and a version identifier.

The allowed version identifiers and comparison semantics are the same as those of the Version matching operator, except that the sense of any match is inverted.

"},{"location":"config/dependency/#ordered-comparison","title":"Ordered comparison","text":"

Inclusive comparisons allow for the version identifier part of clauses whereas exclusive comparisons do not. For example, >=1.2 allows for version 1.2.0 while >1.2 does not.

Unlike the inclusive ordered comparisons <= and >=, the exclusive ordered comparisons < and > specifically exclude pre-releases, post-releases, and local versions of the specified version.

"},{"location":"config/dependency/#arbitrary-equality","title":"Arbitrary equality","text":"

Though heavily discouraged, arbitrary equality comparisons allow for simple string matching without any version semantics, for example ===foobar.

"},{"location":"config/dependency/#environment-markers","title":"Environment markers","text":"

Environment markers allow for dependencies to only be installed when certain conditions are met.

For example, if you need to install the latest version of cryptography that is available for a given Python major version you could define the following:

cryptography==3.3.2; python_version < \"3\"\ncryptography>=35.0; python_version > \"3\"\n

Alternatively, if you only need it on Python 3 when running on Windows you could do:

cryptography; python_version ~= \"3.0\" and platform_system == \"Windows\"\n

The available environment markers are as follows.

Marker Python equivalent Examples os_name import osos.name sys_platform import syssys.platform platform_machine import platformplatform.machine() platform_python_implementation import platformplatform.python_implementation() platform_release import platformplatform.release() platform_system import platformplatform.system() platform_version import platformplatform.version() python_version import platform'.'.join(platform.python_version_tuple()[:2]) python_full_version import platformplatform.python_version() implementation_name import syssys.implementation.name implementation_version See here "},{"location":"config/dependency/#features","title":"Features","text":"

You can select groups of optional dependencies to install using the extras syntax. For example, if a dependency named foo defined the following:

pyproject.toml 
[project.optional-dependencies]\ncrypto = [\n  \"PyJWT\",\n  \"cryptography\",\n]\nfastjson = [\n  \"orjson\",\n]\ncli = [\n  \"prompt-toolkit\",\n  \"colorama; platform_system == 'Windows'\",\n]\n

You can select the cli and crypto features like so:

foo[cli,crypto]==1.*\n

Note that the features come immediately after the package name, before any version specifiers.

"},{"location":"config/dependency/#self-referential","title":"Self-referential","text":"

Feature groups can self-referentially extend others. For example, for a project called awesome-project, the dev feature group in the following pyproject.toml file would select everything in the crypto feature group, plus black:

pyproject.toml 
[project]\nname = \"awesome-project\"\n\n[project.optional-dependencies]\ncrypto = [\n  \"PyJWT\",\n  \"cryptography\",\n]\ndev = [\n  \"awesome-project[crypto]\",\n  \"black\",\n]\n
"},{"location":"config/dependency/#direct-references","title":"Direct references","text":"

Instead of using normal version specifiers and fetching packages from an index like PyPI, you can define exact sources using direct references with an explicit URI.

Direct references are usually not meant to be used for dependencies of a published project but rather are used for defining dependencies for an environment.

All direct reference types are prefixed by the package name like:

<NAME> @ <REFERENCE>\n
"},{"location":"config/dependency/#version-control-systems","title":"Version control systems","text":"

Various version control systems (VCS) are supported as long as the associated executable is available along your PATH.

VCS direct references are defined using one of the following formats:

<NAME> @ <SCHEME>://<PATH>\n<NAME> @ <SCHEME>://<PATH>@<REVISION>\n

You may also append a #subdirectory=<PATH> component for specifying the relative path to the Python package when it is not located at the root e.g. #subdirectory=lib/foo.

For more information, refer to this.

"},{"location":"config/dependency/#supported-vcs","title":"Supported VCS","text":"GitMercurialSubversionBazaar Executable Schemes Revisions Example git proj @ git+https://github.com/org/proj.git@v1 Executable Schemes Revisions Example hg proj @ hg+file:///path/to/proj@v1 Executable Schemes Revisions Example svn proj @ svn+file:///path/to/proj Executable Schemes Revisions Example bzr proj @ bzr+lp:proj@v1"},{"location":"config/dependency/#local","title":"Local","text":"

You can install local packages with the file scheme in the following format:

<NAME> @ file://<HOST>/<PATH>\n

The <HOST> is only used on Windows systems, where it can refer to a network share. If omitted it is assumed to be localhost and the third slash must still be present.

The <PATH> can refer to a source archive, a wheel, or a directory containing a Python package.

Type Unix Windows Source archive proj @ file:///path/to/pkg.tar.gz proj @ file:///c:/path/to/pkg.tar.gz Wheel proj @ file:///path/to/pkg.whl proj @ file:///c:/path/to/pkg.whl Directory proj @ file:///path/to/pkg proj @ file:///c:/path/to/pkg

Tip

You may also specify paths relative to your project's root directory on all platforms by using context formatting:

<NAME> @ {root:uri}/pkg_inside_project\n<NAME> @ {root:uri}/../pkg_alongside_project\n
"},{"location":"config/dependency/#remote","title":"Remote","text":"

You can install source archives and wheels by simply referring to a URL:

black @ https://github.com/psf/black/archive/refs/tags/21.10b0.zip\npytorch @ https://download.pytorch.org/whl/cu102/torch-1.10.0%2Bcu102-cp39-cp39-linux_x86_64.whl\n

An expected hash value may be specified by appending a #<HASH_ALGORITHM>=<EXPECTED_HASH> component:

requests @ https://github.com/psf/requests/archive/refs/tags/v2.26.0.zip#sha256=eb729a757f01c10546ebd179ae2aec852dd0d7f8ada2328ccf4558909d859985\n

If the hash differs from the expected hash, the installation will fail.

It is recommended that only hashes which are unconditionally provided by the latest version of the standard library's hashlib module be used for hashes. As of Python 3.10, that list consists of:

"},{"location":"config/dependency/#complex-syntax","title":"Complex syntax","text":"

The following is an example that uses features and environment markers:

pkg[feature1,feature2] @ <REFERENCE> ; python_version < \"3.7\"\n

Note that the space before the semicolon is required.

"},{"location":"config/hatch/","title":"Hatch configuration","text":"

Configuration for Hatch itself is stored in a config.toml file located by default in one of the following platform-specific directories.

Platform Path macOS ~/Library/Application Support/hatch Windows %USERPROFILE%\\AppData\\Local\\hatch Unix $XDG_CONFIG_HOME/hatch (the XDG_CONFIG_HOME environment variable default is ~/.config)

You can select a custom path to the file using the --config root option or by setting the HATCH_CONFIG environment variable.

The file can be managed by the config command group.

"},{"location":"config/hatch/#mode","title":"Mode","text":"

The mode key controls how Hatch selects the project to work on.

"},{"location":"config/hatch/#local","title":"Local","text":"config.toml 
mode = \"local\"\n

By default, Hatch will look for a pyproject.toml file in the current working directory and any parent directories. The directory storing the first found file will be considered the project root.

"},{"location":"config/hatch/#project","title":"Project","text":"config.toml 
mode = \"project\"\nproject = \"proj1\"\n\n[projects]\nproj1 = \"/path/to/project1\"\nproj2 = {\"location\": \"/path/to/project2\"}\n\n[dirs]\nproject = [\"/path/to/monorepo1\", \"/path/to/monorepo2\"]\n

In this mode, Hatch will only work on the selected project. The project is located using multiple heuristics:

  1. If the project is defined in the projects table then it must be a string, or an inline table with a location key, that is the full path to the project.
  2. If the project matches a subdirectory in any of the directories listed in dirs.project, then that will be used as the project root.

An error will occur if the project cannot be found.

You can use the config set command to change the project you are working on:

$ hatch config set project proj2\nNew setting:\nproject = \"proj2\"\n

The project can be selected on a per-command basis with the -p/--project (environment variable HATCH_PROJECT) root option.

"},{"location":"config/hatch/#aware","title":"Aware","text":"config.toml 
mode = \"aware\"\n

This is essentially the local mode with a fallback to the project mode.

"},{"location":"config/hatch/#shell","title":"Shell","text":"

You can control the shell used to enter environments with the shell key.

If defined as a string, it must be the name of one of the supported shells and be available along your PATH.

config.toml 
shell = \"fish\"\n

If the executable name of your shell differs from the supported name, you can define the shell as a table with name and path keys.

config.toml 
[shell]\nname = \"bash\"\npath = \"/bin/ash\"\n

You can change the default arguments used to spawn most shells with the args key. The default for such supported shells is usually [\"-i\"].

config.toml 
[shell]\nname = \"bash\"\nargs = [\"--login\"]\n
"},{"location":"config/hatch/#supported","title":"Supported","text":"Shell Name Arguments macOS Windows Unix Almquist shell ash [\"-i\"] Bash bash [\"-i\"] Command Prompt cmd C shell csh [\"-i\"] fish fish [\"-i\"] Nushell nu [] PowerShell pwsh, powershell tcsh tcsh [\"-i\"] xonsh xonsh [\"-i\"] Z shell zsh [\"-i\"]"},{"location":"config/hatch/#default","title":"Default","text":"

Hatch will attempt to use the current shell based on parent processes. If the shell cannot be determined, then on Windows systems Hatch will use the SHELL environment variable, if present, followed by the COMSPEC environment variable, defaulting to cmd. On all other platforms only the SHELL environment variable will be used, defaulting to bash.

"},{"location":"config/hatch/#directories","title":"Directories","text":""},{"location":"config/hatch/#data","title":"Data","text":"config.toml 
[dirs]\ndata = \"...\"\n

This is the directory that is used to persist data. By default it is set to one of the following platform-specific directories.

Platform Path macOS ~/Library/Application Support/hatch Windows %USERPROFILE%\\AppData\\Local\\hatch Unix $XDG_DATA_HOME/hatch (the XDG_DATA_HOME environment variable default is ~/.local/share)

You can select a custom path to the directory using the --data-dir root option or by setting the HATCH_DATA_DIR environment variable.

"},{"location":"config/hatch/#cache","title":"Cache","text":"config.toml 
[dirs]\ncache = \"...\"\n

This is the directory that is used to cache data. By default it is set to one of the following platform-specific directories.

Platform Path macOS ~/Library/Caches/hatch Windows %USERPROFILE%\\AppData\\Local\\hatch\\Cache Unix $XDG_CACHE_HOME/hatch (the XDG_CACHE_HOME environment variable default is ~/.cache)

You can select a custom path to the directory using the --cache-dir root option or by setting the HATCH_CACHE_DIR environment variable.

"},{"location":"config/hatch/#environments","title":"Environments","text":"config.toml 
[dirs.env]\n<ENV_TYPE> = \"...\"\n

This determines where to store environments, with every key being the type of environment and the value being the desired storage location.

For example, if you wanted to store virtual environments in a .virtualenvs directory within your home directory, you could specify the following:

config.toml 
[dirs.env]\nvirtual = \"~/.virtualenvs\"\n

Any environment variables are also expanded.

If the path is not absolute, then it will be relative to the project root. So if you wanted to use a directory named .hatch in each project directory, you could do:

config.toml 
[dirs.env]\nvirtual = \".hatch\"\n

Any type of environment that is not explicitly defined will default to <DATA_DIR>/env/<ENV_TYPE>.

"},{"location":"config/hatch/#python-installations","title":"Python installations","text":"config.toml 
[dirs]\npython = \"...\"\n

This determines where to install specific versions of Python.

The following values have special meanings:

Value Path isolated (default) <DATA_DIR>/pythons"},{"location":"config/hatch/#terminal","title":"Terminal","text":"

You can configure how all output is displayed using the terminal.styles table. These settings are also applied to all plugins.

config.toml 
[terminal.styles]\nerror = \"...\"\n...\n

Cross-platform terminal capabilities are provided by Rich.

"},{"location":"config/hatch/#output-levels","title":"Output levels","text":"

The levels of output are as follows. Note that the verbosity indicates the minimum level at which the output is displayed.

Level Default Verbosity Description debug bold 1 - 3 Messages that are not useful for most user experiences error bold red -2 Messages indicating some unrecoverable error info bold 0 Messages conveying basic information success bold cyan 0 Messages indicating some positive outcome waiting bold magenta 0 Messages shown before potentially time consuming operations warning bold yellow -1 Messages conveying important information

See the documentation and color reference for guidance on valid values.

"},{"location":"config/hatch/#spinner","title":"Spinner","text":"

You can select the sequence used for waiting animations with the spinner option.

config.toml 
[terminal.styles]\nspinner = \"...\"\n
"},{"location":"config/metadata/","title":"Project metadata","text":"

Project metadata is stored in a pyproject.toml file located at the root of a project's tree and is based entirely on the standard.

"},{"location":"config/metadata/#name","title":"Name (required)","text":"

The name of the project.

pyproject.toml 
[project]\nname = \"your-app\"\n
"},{"location":"config/metadata/#version","title":"Version (required)","text":"pyproject.toml DynamicStatic

See the dedicated versioning section.

[project]\n...\ndynamic = [\"version\"]\n\n[tool.hatch.version]\npath = \"...\"\n
[project]\n...\nversion = \"0.0.1\"\n
"},{"location":"config/metadata/#description","title":"Description","text":"

A brief summary of the project.

pyproject.toml 
[project]\n...\ndescription = '...'\n
"},{"location":"config/metadata/#readme","title":"Readme","text":"

The full description of the project.

pyproject.toml SimpleComplex

The file extension must be .md, .rst, or .txt.

[project]\n...\nreadme = \"README.md\"\n

The content-type field must be set to text/markdown, text/x-rst, or text/plain.

FileText

A charset field may also be set to instruct which encoding to use for reading the file, defaulting to utf-8.

[project]\n...\nreadme = {\"file\" = \"README.md\", \"content-type\" = \"text/markdown\"}\n

The content-type field must be set to text/markdown or text/x-rst.

[project]\n...\nreadme = {\"text\" = \"...\", \"content-type\" = \"text/markdown\"}\n

Note

If this is defined as a file, then it will always be included in source distributions for consistent builds.

"},{"location":"config/metadata/#python-support","title":"Python support","text":"

The Python version requirements of the project.

pyproject.toml 
[project]\n...\nrequires-python = \">=3.8\"\n
"},{"location":"config/metadata/#license","title":"License","text":"

For more information, see PEP 639.

pyproject.toml SPDX expressionFiles 
[project]\n...\nlicense = \"Apache-2.0 OR MIT\"\n
PathsGlobs 
[project]\n...\nlicense-files = { paths = [\"LICENSE.txt\"] }\n
[project]\n...\nlicense-files = { globs = [\"LICENSES/*\"] }\n
"},{"location":"config/metadata/#ownership","title":"Ownership","text":"

The people or organizations considered to be the authors or maintainers of the project. The exact meaning is open to interpretation; it may list the original or primary authors, current maintainers, or owners of the package. If the values are the same, prefer only the use of the authors field.

pyproject.toml 
[project]\n...\nauthors = [\n  { name = \"...\", email = \"...\" },\n]\nmaintainers = [\n  { name = \"...\", email = \"...\" },\n]\n
"},{"location":"config/metadata/#keywords","title":"Keywords","text":"

The keywords used to assist in the discovery of the project.

pyproject.toml 
[project]\n...\nkeywords = [\n  \"...\",\n]\n
"},{"location":"config/metadata/#classifiers","title":"Classifiers","text":"

The trove classifiers that apply to the project.

pyproject.toml 
[project]\n...\nclassifiers = [\n  \"...\",\n]\n
"},{"location":"config/metadata/#urls","title":"URLs","text":"

A table of URLs where the key is the URL label and the value is the URL itself.

pyproject.toml 
[project.urls]\nDocumentation = \"...\"\n\"Source code\" = \"...\"\n
"},{"location":"config/metadata/#dependencies","title":"Dependencies","text":"

See the dependency specification page for more information.

Entries support context formatting and disallow direct references by default.

"},{"location":"config/metadata/#required","title":"Required","text":"pyproject.toml 
[project]\n...\ndependencies = [\n  \"...\",\n]\n
"},{"location":"config/metadata/#optional","title":"Optional","text":"pyproject.toml 
[project.optional-dependencies]\noption1 = [\n  \"...\",\n]\noption2 = [\n  \"...\",\n]\n
"},{"location":"config/metadata/#entry-points","title":"Entry points","text":"

Entry points are a mechanism for the project to advertise components it provides to be discovered and used by other code.

"},{"location":"config/metadata/#cli","title":"CLI","text":"

After installing projects that define CLI scripts, each key will be available along your PATH as a command that will call its associated object.

pyproject.toml 
[project.scripts]\ncli-name = \"pkg.subpkg:func\"\n

Using the above example, running cli-name would essentially execute the following Python script:

import sys\n\nfrom pkg.subpkg import func\n\nsys.exit(func())\n
"},{"location":"config/metadata/#gui","title":"GUI","text":"

GUI scripts are exactly the same as CLI scripts except on Windows, where they are handled specially so that they can be started without a console.

pyproject.toml 
[project.gui-scripts]\ngui-name = \"pkg.subpkg:func\"\n
"},{"location":"config/metadata/#plugins","title":"Plugins","text":"pyproject.toml 
[project.entry-points.plugin-namespace]\nplugin-name1 = \"pkg.subpkg1\"\nplugin-name2 = \"pkg.subpkg2:func\"\n
"},{"location":"config/metadata/#dynamic","title":"Dynamic","text":"

If any metadata fields are set dynamically, like the version may be, then they must be listed here.

pyproject.toml 
[project]\n...\ndynamic = [\n  \"...\",\n]\n
"},{"location":"config/metadata/#metadata-options","title":"Metadata options","text":""},{"location":"config/metadata/#allowing-direct-references","title":"Allowing direct references","text":"

By default, dependencies are not allowed to define direct references. To disable this check, set allow-direct-references to true:

pyproject.toml hatch.toml 
[tool.hatch.metadata]\nallow-direct-references = true\n
[metadata]\nallow-direct-references = true\n
"},{"location":"config/metadata/#allowing-ambiguous-features","title":"Allowing ambiguous features","text":"

By default, names of optional dependencies are normalized to prevent ambiguity. To disable this normalization, set allow-ambiguous-features to true:

pyproject.toml hatch.toml 
[tool.hatch.metadata]\nallow-ambiguous-features = true\n
[metadata]\nallow-ambiguous-features = true\n

Deprecated

This option temporarily exists to provide better interoperability with tools that do not yet support PEP 685 and will be removed in the first minor release after Jan 1, 2024.

"},{"location":"config/project-templates/","title":"Project templates","text":"

You can control how new projects are created by the new command using Hatch's config file.

"},{"location":"config/project-templates/#author","title":"Author","text":"config.toml 
[template]\nname = \"...\"\nemail = \"...\"\n
"},{"location":"config/project-templates/#licenses","title":"Licenses","text":"config.toml 
[template.licenses]\nheaders = true\ndefault = [\n  \"MIT\",\n]\n

The list of licenses should be composed of SPDX identifiers. If multiple licenses are specified, then they will be placed in a LICENSES directory.

"},{"location":"config/project-templates/#options","title":"Options","text":""},{"location":"config/project-templates/#tests","title":"Tests","text":"

This adds a tests directory with environments for testing and linting.

config.toml 
[template.plugins.default]\ntests = true\n
"},{"location":"config/project-templates/#ci","title":"CI","text":"

This adds a GitHub Actions workflow that runs tests on all platforms using modern versions of Python.

config.toml 
[template.plugins.default]\nci = false\n
"},{"location":"config/project-templates/#src-layout","title":"src layout","text":"

See this blog post.

config.toml 
[template.plugins.default]\nsrc-layout = true\n
"},{"location":"config/project-templates/#feature-flags","title":"Feature flags","text":""},{"location":"config/project-templates/#command-line-interface","title":"Command line interface","text":"

The --cli flag adds a CLI backed by Click that can also be invoked with python -m <PKG_NAME>.

"},{"location":"config/static-analysis/","title":"Static analysis configuration","text":"

Static analysis performed by the fmt command is backed entirely by Ruff.

Hatch provides default settings that user configuration can extend.

"},{"location":"config/static-analysis/#extending-config","title":"Extending config","text":"

When defining your configuration, be sure to use options that are prefixed by extend- such as extend-select, for example:

pyproject.toml ruff.toml 
[tool.ruff.format]\npreview = true\nquote-style = \"single\"\n\n[tool.ruff.lint]\npreview = true\nextend-select = [\"C901\"]\n\n[tool.ruff.lint.extend-per-file-ignores]\n\"docs/.hooks/*\" = [\"INP001\", \"T201\"]\n\n[tool.ruff.lint.isort]\nknown-first-party = [\"foo\", \"bar\"]\n
[format]\npreview = true\nquote-style = \"single\"\n\n[lint]\npreview = true\nextend-select = [\"C901\"]\n\n[lint.extend-per-file-ignores]\n\"docs/.hooks/*\" = [\"INP001\", \"T201\"]\n\n[lint.isort]\nknown-first-party = [\"foo\", \"bar\"]\n

Note

When not persisting config, there is no need to explicitly extend the defaults as Hatch automatically handles that.

"},{"location":"config/static-analysis/#persistent-config","title":"Persistent config","text":"

If you want to store the default configuration in the project, set an explicit path like so:

pyproject.toml hatch.toml 
[tool.hatch.envs.hatch-static-analysis]\nconfig-path = \"ruff_defaults.toml\"\n
[envs.hatch-static-analysis]\nconfig-path = \"ruff_defaults.toml\"\n

Then instruct Ruff to consider your configuration as an extension of the default file:

pyproject.toml ruff.toml 
[tool.ruff]\nextend = \"ruff_defaults.toml\"\n
extend = \"ruff_defaults.toml\"\n

Anytime you wish to update the defaults (such as when upgrading Hatch), you must run the fmt command once with the --sync flag e.g.:

hatch fmt --check --sync\n

Tip

This is the recommended approach since it allows other tools like IDEs to use the default configuration.

"},{"location":"config/static-analysis/#versioning","title":"Versioning","text":"

You can pin the particular version of Ruff by explicitly defining the environment dependencies:

pyproject.toml hatch.toml 
[tool.hatch.envs.hatch-static-analysis]\ndependencies = [\"ruff==X.Y.Z\"]\n
[envs.hatch-static-analysis]\ndependencies = [\"ruff==X.Y.Z\"]\n
"},{"location":"config/static-analysis/#default-settings","title":"Default settings","text":""},{"location":"config/static-analysis/#non-rule-settings","title":"Non-rule settings","text":""},{"location":"config/static-analysis/#per-file-ignored-rules","title":"Per-file ignored rules","text":""},{"location":"config/static-analysis/#selected-rules","title":"Selected rules","text":"

The following rules are based on version 0.1.8 of Ruff. Rules with a P are only selected when preview mode is enabled.

"},{"location":"config/environment/advanced/","title":"Advanced environment configuration","text":""},{"location":"config/environment/advanced/#context-formatting","title":"Context formatting","text":"

All environments support the following extra context formatting fields:

Field Description env_name The name of the environment env_type The type of environment matrix Its modifier selects the value of that matrix variable. If the environment is not part of a matrix or was not generated with the variable, you must specify a default value as an additional modifier e.g. {matrix:version:v1.0.0}. verbosity The integer verbosity value of Hatch. A flag modifier is supported that will render the value as a CLI flag e.g. -2 becomes -qq, 1 becomes -v, and 0 becomes an empty string. An additional flag integer modifier may be used to adjust the verbosity level. For example, if you wanted to make a command quiet by default, you could use {verbosity:flag:-1} within the command. args For executed commands only, any extra command line arguments with an optional default modifier if none were provided"},{"location":"config/environment/advanced/#matrix","title":"Matrix","text":"

Environments can define a series of matrices with the matrix option:

pyproject.toml hatch.toml 
[tool.hatch.envs.test]\ndependencies = [\n  \"pytest\"\n]\n\n[[tool.hatch.envs.test.matrix]]\npython = [\"2.7\", \"3.8\"]\nversion = [\"42\", \"3.14\"]\n\n[[tool.hatch.envs.test.matrix]]\npython = [\"3.8\", \"3.9\"]\nversion = [\"9000\"]\nfeature = [\"foo\", \"bar\"]\n
[envs.test]\ndependencies = [\n  \"pytest\"\n]\n\n[[envs.test.matrix]]\npython = [\"2.7\", \"3.8\"]\nversion = [\"42\", \"3.14\"]\n\n[[envs.test.matrix]]\npython = [\"3.8\", \"3.9\"]\nversion = [\"9000\"]\nfeature = [\"foo\", \"bar\"]\n

Doing so will result in the product of each variable combination being its own environment.

"},{"location":"config/environment/advanced/#naming","title":"Naming","text":"

The name of the generated environments will be the variable values of each combination separated by hyphens, altogether prefixed by <ENV_NAME>.. For example, the following configuration:

pyproject.toml hatch.toml 
[[tool.hatch.envs.test.matrix]]\nversion = [\"42\"]\nfeature = [\"foo\", \"bar\"]\n
[[envs.test.matrix]]\nversion = [\"42\"]\nfeature = [\"foo\", \"bar\"]\n

would indicate the following unique environments:

test.42-foo\ntest.42-bar\n

The exceptions to this format are described below.

"},{"location":"config/environment/advanced/#python-variables","title":"Python variables","text":"

If the variables py or python are specified, then they will rank first in the product result and will be prefixed by py if the value is not. For example, the following configuration:

pyproject.toml hatch.toml 
[[tool.hatch.envs.test.matrix]]\nversion = [\"42\"]\npython = [\"3.9\", \"pypy3\"]\n
[[envs.test.matrix]]\nversion = [\"42\"]\npython = [\"3.9\", \"pypy3\"]\n

would generate the following environments:

test.py3.9-42\ntest.pypy3-42\n

Note

The value of this variable sets the Python version.

"},{"location":"config/environment/advanced/#name-formatting","title":"Name formatting","text":"

You can set the matrix-name-format option to modify how each variable part is formatted which recognizes the placeholders {variable} and {value}. For example, the following configuration:

pyproject.toml hatch.toml 
[tool.hatch.envs.test]\nmatrix-name-format = \"{variable}_{value}\"\n\n[[tool.hatch.envs.test.matrix]]\nversion = [\"42\"]\nfeature = [\"foo\", \"bar\"]\n
[envs.test]\nmatrix-name-format = \"{variable}_{value}\"\n\n[[envs.test.matrix]]\nversion = [\"42\"]\nfeature = [\"foo\", \"bar\"]\n

would produce the following environments:

test.version_42-feature_foo\ntest.version_42-feature_bar\n

By default this option is set to {value}.

"},{"location":"config/environment/advanced/#default-environment","title":"Default environment","text":"

If the default environment defines matrices, then the generated names will not be prefixed by the environment name. This can be useful for projects that only need a single series of matrices without any standalone environments.

"},{"location":"config/environment/advanced/#selection","title":"Selection","text":"

Rather than selecting a single generated environment, you can select the root environment to target all of them. For example, if you have the following configuration:

pyproject.toml hatch.toml 
[tool.hatch.envs.test]\ndependencies = [\n  \"coverage[toml]\",\n  \"pytest\",\n  \"pytest-cov\",\n]\n\n[tool.hatch.envs.test.scripts]\ncov = 'pytest --cov-report=term-missing --cov-config=pyproject.toml --cov=pkg --cov=tests'\n\n[[tool.hatch.envs.test.matrix]]\npython = [\"2.7\", \"3.8\"]\nversion = [\"42\", \"3.14\"]\n
[envs.test]\ndependencies = [\n  \"coverage[toml]\",\n  \"pytest\",\n  \"pytest-cov\",\n]\n\n[envs.test.scripts]\ncov = 'pytest --cov-report=term-missing --cov-config=pyproject.toml --cov=pkg --cov=tests'\n\n[[envs.test.matrix]]\npython = [\"2.7\", \"3.8\"]\nversion = [\"42\", \"3.14\"]\n

you could then run your tests consecutively in all 4 environments with:

hatch run test:cov\n
"},{"location":"config/environment/advanced/#option-overrides","title":"Option overrides","text":"

You can modify options based on the conditions of different sources like matrix variables with the overrides table, using dotted key syntax for each declaration:

pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>.overrides]\n<SOURCE>.<CONDITION>.<OPTION> = <VALUE>\n
[envs.<ENV_NAME>.overrides]\n<SOURCE>.<CONDITION>.<OPTION> = <VALUE>\n

The type of the selected option determines the types of values.

"},{"location":"config/environment/advanced/#platform-overrides","title":"Platform overrides","text":"

Options can be modified based on the current platform using the platform source.

pyproject.toml hatch.toml 
[tool.hatch.envs.test.overrides]\nplatform.windows.scripts = [\n  'run=pytest -m \"not io_uring\"',\n]\n
[envs.test.overrides]\nplatform.windows.scripts = [\n  'run=pytest -m \"not io_uring\"',\n]\n

The following platforms are supported:

"},{"location":"config/environment/advanced/#environment-variable-overrides","title":"Environment variable overrides","text":"

Environment variables can modify options using the env source.

pyproject.toml hatch.toml 
[tool.hatch.envs.test.overrides]\nenv.GITHUB_ACTIONS.dev-mode = { value = false, if = [\"true\"] }\n
[envs.test.overrides]\nenv.GITHUB_ACTIONS.dev-mode = { value = false, if = [\"true\"] }\n
"},{"location":"config/environment/advanced/#matrix-variable-overrides","title":"Matrix variable overrides","text":"

The matrix variables used to generate each environment can be used to modify options within using the matrix source.

pyproject.toml hatch.toml 
[tool.hatch.envs.test.overrides]\nmatrix.version.env-vars = \"PRODUCT_VERSION\"\nmatrix.auth.features = [\n  { value = \"oauth\", if = [\"oauth2\"] },\n  { value = \"kerberos\", if = [\"kerberos\"] },\n]\n\n[[tool.hatch.envs.test.matrix]]\npython = [\"2.7\", \"3.8\"]\nversion = [\"legacy\", \"latest\"]\nauth = [\"oauth2\", \"kerberos\", \"noauth\"]\n
[envs.test.overrides]\nmatrix.version.env-vars = \"PRODUCT_VERSION\"\nmatrix.auth.features = [\n  { value = \"oauth\", if = [\"oauth2\"] },\n  { value = \"kerberos\", if = [\"kerberos\"] },\n]\n\n[[envs.test.matrix]]\npython = [\"2.7\", \"3.8\"]\nversion = [\"legacy\", \"latest\"]\nauth = [\"oauth2\", \"kerberos\", \"noauth\"]\n
"},{"location":"config/environment/advanced/#name-overrides","title":"Name overrides","text":"

When a matrix is defined, the name source can be used for regular expression matching on the generated name, minus the prefix for non-default environments.

pyproject.toml hatch.toml 
[tool.hatch.envs.test.overrides]\nname.\"^0\".env-vars = \"TESTING_UNSTABLE=true\"\n\n[[tool.hatch.envs.test.matrix]]\nversion = [\"0.1.0\", \"0.2.0\", \"1.0.0\"]\n
[envs.test.overrides]\nname.\"^0\".env-vars = \"TESTING_UNSTABLE=true\"\n\n[[envs.test.matrix]]\nversion = [\"0.1.0\", \"0.2.0\", \"1.0.0\"]\n
"},{"location":"config/environment/advanced/#types","title":"Types","text":""},{"location":"config/environment/advanced/#overwriting","title":"Overwriting","text":"

Rather than supplementing the values within mapping types or array types, you can overwrite the option as a whole by prefixing the name with set-:

pyproject.toml hatch.toml 
[tool.hatch.envs.test.overrides]\nmatrix.foo.set-platforms = [\"macos\", \"linux\"]\n
[envs.test.overrides]\nmatrix.foo.set-platforms = [\"macos\", \"linux\"]\n

When overwriting entire options or keys within mappings, override sources are applied in the following order:

  1. platform
  2. environment variables
  3. matrix variables
  4. names
"},{"location":"config/environment/advanced/#conditions","title":"Conditions","text":"

You may specify certain extra keys for any inline table that will determine whether or not to apply that entry. These modifiers may be combined with others and any negative evaluation will immediately cause the entry to be skipped.

"},{"location":"config/environment/advanced/#allowed-values","title":"Allowed values","text":"

The if key represents the allowed values for that condition. If the value of the condition is not listed, then that entry will not be applied:

pyproject.toml hatch.toml 
[tool.hatch.envs.test.overrides]\nmatrix.version.python = { value = \"pypy\", if = [\"3.14\"] }\nmatrix.version.env-vars = [\n  { key = \"KEY1\", value = \"VALUE1\", if = [\"42\"] },\n  { key = \"KEY2\", value = \"VALUE2\", if = [\"3.14\"] },\n]\n\n[[tool.hatch.envs.test.matrix]]\nversion = [\"42\", \"3.14\"]\n
[envs.test.overrides]\nmatrix.version.python = { value = \"pypy\", if = [\"3.14\"] }\nmatrix.version.env-vars = [\n  { key = \"KEY1\", value = \"VALUE1\", if = [\"42\"] },\n  { key = \"KEY2\", value = \"VALUE2\", if = [\"3.14\"] },\n]\n\n[[envs.test.matrix]]\nversion = [\"42\", \"3.14\"]\n
"},{"location":"config/environment/advanced/#specific-platforms","title":"Specific platforms","text":"

The platform key represents the desired platforms. If the current platform is not listed, then that entry will not be applied:

pyproject.toml hatch.toml 
[tool.hatch.envs.test.overrides]\nenv.EXPERIMENTAL.python = { value = \"pypy\", if = [\"1\"], platform = [\"macos\"] }\nmatrix.version.env-vars = [\n  { key = \"KEY1\", value = \"VALUE1\", if = [\"42\"], platform = [\"linux\"] },\n  { key = \"KEY2\", value = \"VALUE2\", if = [\"3.14\"] },\n]\n\n[[tool.hatch.envs.test.matrix]]\nversion = [\"42\", \"3.14\"]\n
[envs.test.overrides]\nenv.EXPERIMENTAL.python = { value = \"pypy\", if = [\"1\"], platform = [\"macos\"] }\nmatrix.version.env-vars = [\n  { key = \"KEY1\", value = \"VALUE1\", if = [\"42\"], platform = [\"linux\"] },\n  { key = \"KEY2\", value = \"VALUE2\", if = [\"3.14\"] },\n]\n\n[[envs.test.matrix]]\nversion = [\"42\", \"3.14\"]\n
"},{"location":"config/environment/advanced/#required-environment-variables","title":"Required environment variables","text":"

The env key represents the required environment variables. If any of the listed environment variables are not set or the defined value does not match, then that entry will not be applied:

pyproject.toml hatch.toml 
[tool.hatch.envs.test.overrides]\nplatform.windows.python = { value = \"pypy\", env = [\"EXPERIMENTAL\"] }\nmatrix.version.env-vars = [\n  { key = \"KEY1\", value = \"VALUE1\", if = [\"42\"], env = [\"FOO\", \"BAR=BAZ\"] },\n  { key = \"KEY2\", value = \"VALUE2\", if = [\"3.14\"] },\n]\n\n[[tool.hatch.envs.test.matrix]]\nversion = [\"42\", \"3.14\"]\n
[envs.test.overrides]\nplatform.windows.python = { value = \"pypy\", env = [\"EXPERIMENTAL\"] }\nmatrix.version.env-vars = [\n  { key = \"KEY1\", value = \"VALUE1\", if = [\"42\"], env = [\"FOO\", \"BAR=BAZ\"] },\n  { key = \"KEY2\", value = \"VALUE2\", if = [\"3.14\"] },\n]\n\n[[envs.test.matrix]]\nversion = [\"42\", \"3.14\"]\n
"},{"location":"config/environment/overview/","title":"Environment configuration","text":"

All environments are defined as sections within the tool.hatch.envs table.

pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\n
[envs.<ENV_NAME>]\n

The storage location for environments is completely configurable.

Unless an environment is explicitly selected on the command line, the default environment will be used. The type of this environment defaults to virtual.

Info

Environments prefixed by hatch- are used for special purposes e.g. static analysis.

"},{"location":"config/environment/overview/#inheritance","title":"Inheritance","text":"

All environments inherit from the environment defined by its template option, which defaults to default.

So for the following configuration:

pyproject.toml hatch.toml 
[tool.hatch.envs.foo]\ntype = \"baz\"\nskip-install = true\n\n[tool.hatch.envs.bar]\ntemplate = \"foo\"\nskip-install = false\n
[envs.foo]\ntype = \"baz\"\nskip-install = true\n\n[envs.bar]\ntemplate = \"foo\"\nskip-install = false\n

the environment bar will be of type baz with skip-install set to false.

Note

Environments do not inherit matrices.

"},{"location":"config/environment/overview/#self-referential-environments","title":"Self-referential environments","text":"

You can disable inheritance by setting template to the environment's own name:

pyproject.toml hatch.toml 
[tool.hatch.envs.foo]\ntemplate = \"foo\"\n
[envs.foo]\ntemplate = \"foo\"\n
"},{"location":"config/environment/overview/#detached-environments","title":"Detached environments","text":"

A common use case is standalone environments that do not require inheritance nor the installation of the project, such as for linting or sometimes building documentation. Enabling the detached option will make the environment self-referential and will skip project installation:

pyproject.toml hatch.toml 
[tool.hatch.envs.lint]\ndetached = true\n
[envs.lint]\ndetached = true\n
"},{"location":"config/environment/overview/#dependencies","title":"Dependencies","text":"

You can install dependencies in addition to the ones defined by your project's metadata. Entries support context formatting.

pyproject.toml hatch.toml 
[tool.hatch.envs.test]\ndependencies = [\n  \"coverage[toml]\",\n  \"pytest\",\n  \"pytest-cov\",\n  \"pytest-mock\",\n]\n
[envs.test]\ndependencies = [\n  \"coverage[toml]\",\n  \"pytest\",\n  \"pytest-cov\",\n  \"pytest-mock\",\n]\n

If you define environments with dependencies that only slightly differ from their inherited environments, you can use the extra-dependencies option to avoid redeclaring the dependencies option:

pyproject.toml hatch.toml 
[tool.hatch.envs.default]\ndependencies = [\n  \"foo\",\n  \"bar\",\n]\n\n[tool.hatch.envs.experimental]\nextra-dependencies = [\n  \"baz\",\n]\n
[envs.default]\ndependencies = [\n  \"foo\",\n  \"bar\",\n]\n\n[envs.experimental]\nextra-dependencies = [\n  \"baz\",\n]\n

Tip

Hatch uses pip to install dependencies so any configuration it supports Hatch does as well. For example, if you wanted to only use a private repository you could set the PIP_INDEX_URL environment variable.

"},{"location":"config/environment/overview/#installation","title":"Installation","text":""},{"location":"config/environment/overview/#features","title":"Features (extras)","text":"

If your project defines optional dependencies, you can select which groups to install using the features option:

pyproject.toml hatch.toml 
[tool.hatch.envs.nightly]\nfeatures = [\n  \"server\",\n  \"grpc\",\n]\n
[envs.nightly]\nfeatures = [\n  \"server\",\n  \"grpc\",\n]\n

Note

Features/optional dependencies are also known as extras in other tools.

"},{"location":"config/environment/overview/#dev-mode","title":"Dev mode","text":"

By default, environments will always reflect the current state of your project on disk. Set dev-mode to false to disable this behavior:

pyproject.toml hatch.toml 
[tool.hatch.envs.static]\ndev-mode = false\n
[envs.static]\ndev-mode = false\n
"},{"location":"config/environment/overview/#skip-install","title":"Skip install","text":"

By default, environments will install your project during creation. To ignore this step, set skip-install to true:

pyproject.toml hatch.toml 
[tool.hatch.envs.lint]\nskip-install = true\n
[envs.lint]\nskip-install = true\n
"},{"location":"config/environment/overview/#environment-variables","title":"Environment variables","text":""},{"location":"config/environment/overview/#defined","title":"Defined","text":"

You can define environment variables with the env-vars option:

pyproject.toml hatch.toml 
[tool.hatch.envs.docs]\ndependencies = [\n  \"mkdocs\"\n]\n[tool.hatch.envs.docs.env-vars]\nSOURCE_DATE_EPOCH = \"1580601600\"\n
[envs.docs]\ndependencies = [\n  \"mkdocs\"\n]\n[envs.docs.env-vars]\nSOURCE_DATE_EPOCH = \"1580601600\"\n

Values support context formatting.

"},{"location":"config/environment/overview/#filters","title":"Filters","text":"

By default, environments will have access to all environment variables. You can filter with wildcard patterns using the env-include/env-exclude options:

pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\nenv-include = [\n  \"FOO*\",\n]\nenv-exclude = [\n  \"BAR\",\n]\n
[envs.<ENV_NAME>]\nenv-include = [\n  \"FOO*\",\n]\nenv-exclude = [\n  \"BAR\",\n]\n

Exclusion patterns take precedence but will never affect defined environment variables.

"},{"location":"config/environment/overview/#scripts","title":"Scripts","text":"

You can define named scripts that may be executed or referenced at the beginning of other scripts. Context formatting is supported.

For example, in the following configuration:

pyproject.toml hatch.toml 
[tool.hatch.envs.test]\ndependencies = [\n  \"coverage[toml]\",\n  \"pytest\",\n  \"pytest-cov\",\n  \"pytest-mock\",\n]\n[tool.hatch.envs.test.scripts]\nrun-coverage = \"pytest --cov-config=pyproject.toml --cov=pkg --cov=tests\"\nrun = \"run-coverage --no-cov\"\n
[envs.test]\ndependencies = [\n  \"coverage[toml]\",\n  \"pytest\",\n  \"pytest-cov\",\n  \"pytest-mock\",\n]\n[envs.test.scripts]\nrun-coverage = \"pytest --cov-config=pyproject.toml --cov=pkg --cov=tests\"\nrun = \"run-coverage --no-cov\"\n

the run script would be expanded to:

pytest --cov-config=pyproject.toml --cov=pkg --cov=tests --no-cov\n

Scripts can also be defined as an array of strings.

pyproject.toml hatch.toml 
[tool.hatch.envs.style]\ndetached = true\ndependencies = [\n  \"flake8\",\n  \"black\",\n  \"isort\",\n]\n[tool.hatch.envs.style.scripts]\ncheck = [\n  \"flake8 .\",\n  \"black --check --diff .\",\n  \"isort --check-only --diff .\",\n]\nfmt = [\n  \"isort .\",\n  \"black .\",\n  \"check\",\n]\n
[envs.style]\ndetached = true\ndependencies = [\n  \"flake8\",\n  \"black\",\n  \"isort\",\n]\n[envs.style.scripts]\ncheck = [\n  \"flake8 .\",\n  \"black --check --diff .\",\n  \"isort --check-only --diff .\",\n]\nfmt = [\n  \"isort .\",\n  \"black .\",\n  \"check\",\n]\n

Similar to make, you can ignore the exit code of commands that start with - (a hyphen). For example, the script error defined by the following configuration would halt after the second command with 3 as the exit code:

pyproject.toml hatch.toml 
[tool.hatch.envs.test.scripts]\nerror = [\n  \"- exit 1\",\n  \"exit 3\",\n  \"exit 0\",\n]\n
[envs.test.scripts]\nerror = [\n  \"- exit 1\",\n  \"exit 3\",\n  \"exit 0\",\n]\n

Tip

Individual scripts inherit from parent environments just like options.

"},{"location":"config/environment/overview/#commands","title":"Commands","text":"

All commands are able to use any defined scripts. Also like scripts, context formatting is supported and the exit code of commands that start with a hyphen will be ignored.

"},{"location":"config/environment/overview/#pre-install","title":"Pre-install","text":"

You can run commands immediately before environments install your project.

pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\npre-install-commands = [\n  \"...\",\n]\n
[envs.<ENV_NAME>]\npre-install-commands = [\n  \"...\",\n]\n
"},{"location":"config/environment/overview/#post-install","title":"Post-install","text":"

You can run commands immediately after environments install your project.

pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\npost-install-commands = [\n  \"...\",\n]\n
[envs.<ENV_NAME>]\npost-install-commands = [\n  \"...\",\n]\n
"},{"location":"config/environment/overview/#python-version","title":"Python version","text":"

The python option specifies which version of Python to use, or an absolute path to a Python interpreter:

pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\npython = \"3.10\"\n
[envs.<ENV_NAME>]\npython = \"3.10\"\n

All environment types should respect this option.

"},{"location":"config/environment/overview/#supported-platforms","title":"Supported platforms","text":"

The platforms option indicates the operating systems with which the environment is compatible:

pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\nplatforms = [\"linux\", \"windows\", \"macos\"]\n
[envs.<ENV_NAME>]\nplatforms = [\"linux\", \"windows\", \"macos\"]\n

The following platforms are supported:

If unspecified, the environment is assumed to be compatible with all platforms.

"},{"location":"config/environment/overview/#description","title":"Description","text":"

The description option is purely informational and is displayed in the output of the env show command:

pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\ndescription = \"\"\"\nLorem ipsum ...\n\"\"\"\n
[envs.<ENV_NAME>]\ndescription = \"\"\"\nLorem ipsum ...\n\"\"\"\n
"},{"location":"config/environment/overview/#type","title":"Type","text":"

An environment's type determines which environment plugin will be used for management. The only built-in environment type is virtual, which uses virtual Python environments.

"},{"location":"history/hatch/","title":"Hatch history","text":"

All notable changes to Hatch will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

"},{"location":"history/hatch/#unreleased","title":"Unreleased","text":""},{"location":"history/hatch/#hatch-v1.9.6","title":"1.9.6 - 2024-04-24","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.9.4","title":"1.9.4 - 2024-03-12","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.9.3","title":"1.9.3 - 2024-01-25","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.9.2","title":"1.9.2 - 2024-01-21","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.9.1","title":"1.9.1 - 2023-12-25","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.9.0","title":"1.9.0 - 2023-12-19","text":"

Changed:

Added:

Fixed:

"},{"location":"history/hatch/#hatch-v1.8.1","title":"1.8.1 - 2023-12-14","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.8.0","title":"1.8.0 - 2023-12-11","text":"

Changed:

Added:

Fixed:

"},{"location":"history/hatch/#hatch-v1.7.0","title":"1.7.0 - 2023-04-03","text":"

Changed:

Added:

Fixed:

"},{"location":"history/hatch/#hatch-v1.6.3","title":"1.6.3 - 2022-10-24","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.6.2","title":"1.6.2 - 2022-10-20","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.6.1","title":"1.6.1 - 2022-10-16","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.6.0","title":"1.6.0 - 2022-10-08","text":"

Changed:

Added:

Fixed:

"},{"location":"history/hatch/#hatch-v1.5.0","title":"1.5.0 - 2022-08-28","text":"

Added:

Fixed:

"},{"location":"history/hatch/#hatch-v1.4.2","title":"1.4.2 - 2022-08-16","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.4.1","title":"1.4.1 - 2022-08-13","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.4.0","title":"1.4.0 - 2022-08-06","text":"

Added:

Fixed:

"},{"location":"history/hatch/#hatch-v1.3.1","title":"1.3.1 - 2022-07-11","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.3.0","title":"1.3.0 - 2022-07-10","text":"

Changed:

Added:

Fixed:

"},{"location":"history/hatch/#hatch-v1.2.1","title":"1.2.1 - 2022-05-30","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.2.0","title":"1.2.0 - 2022-05-22","text":"

Changed:

Added:

Fixed:

"},{"location":"history/hatch/#hatch-v1.1.2","title":"1.1.2 - 2022-05-20","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.1.1","title":"1.1.1 - 2022-05-12","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.1.0","title":"1.1.0 - 2022-05-12","text":"

Changed:

Added:

"},{"location":"history/hatch/#hatch-v1.0.0","title":"1.0.0 - 2022-04-28","text":"

This is the first stable release of Hatch v1, a complete rewrite. Enjoy!

"},{"location":"history/hatchling/","title":"Hatchling history","text":"

All notable changes to Hatchling will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

"},{"location":"history/hatchling/#unreleased","title":"Unreleased","text":""},{"location":"history/hatchling/#hatchling-v1.21.0","title":"1.21.0 - 2023-12-18","text":"

Added:

"},{"location":"history/hatchling/#hatchling-v1.20.0","title":"1.20.0 - 2023-12-13","text":"

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.19.1","title":"1.19.1 - 2023-12-12","text":"

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.19.0","title":"1.19.0 - 2023-12-11","text":"

Changed:

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.18.0","title":"1.18.0 - 2023-06-12","text":"

Changed:

Added:

"},{"location":"history/hatchling/#hatchling-v1.17.1","title":"1.17.1 - 2023-06-03","text":"

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.17.0","title":"1.17.0 - 2023-05-12","text":"

Added:

"},{"location":"history/hatchling/#hatchling-v1.16.1","title":"1.16.1 - 2023-05-11","text":"

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.16.0","title":"1.16.0 - 2023-05-11","text":"

Added:

"},{"location":"history/hatchling/#hatchling-v1.15.0","title":"1.15.0 - 2023-05-09","text":"

Added:

"},{"location":"history/hatchling/#hatchling-v1.14.1","title":"1.14.1 - 2023-04-23","text":"

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.14.0","title":"1.14.0 - 2023-04-02","text":"

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.13.0","title":"1.13.0 - 2023-02-09","text":"

Added:

"},{"location":"history/hatchling/#hatchling-v1.12.2","title":"1.12.2 - 2023-01-05","text":"

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.12.1","title":"1.12.1 - 2022-12-31","text":"

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.12.0","title":"1.12.0 - 2022-12-30","text":"

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.11.1","title":"1.11.1 - 2022-10-19","text":"

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.11.0","title":"1.11.0 - 2022-10-08","text":"

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.10.0","title":"1.10.0 - 2022-09-18","text":"

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.9.0","title":"1.9.0 - 2022-09-09","text":"

Changed:

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.8.1","title":"1.8.1 - 2022-08-25","text":"

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.8.0","title":"1.8.0 - 2022-08-16","text":"

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.7.1","title":"1.7.1 - 2022-08-13","text":"

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.7.0","title":"1.7.0 - 2022-08-12","text":"

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.6.0","title":"1.6.0 - 2022-07-23","text":"

Changed:

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.5.0","title":"1.5.0 - 2022-07-11","text":"

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.4.1","title":"1.4.1 - 2022-07-04","text":"

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.4.0","title":"1.4.0 - 2022-07-03","text":"

Changed:

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.3.1","title":"1.3.1 - 2022-05-30","text":"

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.3.0","title":"1.3.0 - 2022-05-22","text":"

Removed:

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.2.0","title":"1.2.0 - 2022-05-20","text":"

Added:

"},{"location":"history/hatchling/#hatchling-v1.1.0","title":"1.1.0 - 2022-05-19","text":"

Added:

"},{"location":"history/hatchling/#hatchling-v1.0.0","title":"1.0.0 - 2022-05-17","text":"

Changed:

Added:

"},{"location":"history/hatchling/#hatchling-v0.25.1","title":"0.25.1 - 2022-06-14","text":"

Fixed:

"},{"location":"history/hatchling/#hatchling-v0.25.0","title":"0.25.0 - 2022-05-15","text":"

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v0.24.0","title":"0.24.0 - 2022-04-28","text":"

This is the initial public release of the Hatchling build system. Support for Python 2 will be dropped in version 1.

"},{"location":"how-to/environment/package-indices/","title":"Package indices","text":"

Most Hatch environment types, like the default virtual, simply use pip to install dependencies. Therefore, you can use the standard environment variables that influence pip's behavior to choose where to search for packages.

Here's an example of setting up the default environment to look at 2 private indices (using context formatting for authentication) before finally falling back to PyPI:

pyproject.toml hatch.toml 
[tool.hatch.envs.default.env-vars]\nPIP_INDEX_URL = \"https://token:{env:GITLAB_API_TOKEN}@gitlab.com/api/v4/groups/<group1_path>/-/packages/pypi/simple/\"\nPIP_EXTRA_INDEX_URL = \"https://token:{env:GITLAB_API_TOKEN}@gitlab.com/api/v4/groups/<group2_path>/-/packages/pypi/simple/ https://pypi.org/simple/\"\n
[envs.default.env-vars]\nPIP_INDEX_URL = \"https://token:{env:GITLAB_API_TOKEN}@gitlab.com/api/v4/groups/<group1_path>/-/packages/pypi/simple/\"\nPIP_EXTRA_INDEX_URL = \"https://token:{env:GITLAB_API_TOKEN}@gitlab.com/api/v4/groups/<group2_path>/-/packages/pypi/simple/ https://pypi.org/simple/\"\n
"},{"location":"how-to/plugins/testing-builds/","title":"Testing builds","text":"

For testing Hatchling plugins, you'll usually want to generate a project to execute builds as a real user would. For example, as a minimal pytest fixture:

from pathlib import Path\n\nimport pytest\n\n\n@pytest.fixture\ndef new_project(tmp_path):\n    project_dir = tmp_path / 'my-app'\n    project_dir.mkdir()\n\n    project_file = project_dir / 'pyproject.toml'\n    project_file.write_text(\n        f\"\"\"\\\n[build-system]\nrequires = [\"hatchling\", \"hatch-plugin-name @ {Path.cwd().as_uri()}\"]\nbuild-backend = \"hatchling.build\"\n\n[project]\nname = \"my-app\"\nversion = \"0.1.0\"\n\"\"\",\n        encoding='utf-8',\n    )\n    ...\n

The issue with this is that after the first test session, the project will be forever cached by pip based on the file path. Therefore, subsequent tests runs will never use updated code.

To invalidate the cache, copy your code to a new path for every test session:

import shutil\nfrom pathlib import Path\nfrom tempfile import TemporaryDirectory\n\nimport pytest\n\n\n@pytest.fixture(scope='session')\ndef plugin_dir():\n    with TemporaryDirectory() as d:\n        directory = Path(d, 'plugin')\n        shutil.copytree(\n            Path.cwd(), directory, ignore=shutil.ignore_patterns('.git')\n        )\n\n        yield directory.resolve()\n\n\n@pytest.fixture\ndef new_project(tmp_path, plugin_dir):\n    project_dir = tmp_path / 'my-app'\n    project_dir.mkdir()\n\n    project_file = project_dir / 'pyproject.toml'\n    project_file.write_text(\n        f\"\"\"\\\n[build-system]\nrequires = [\"hatchling\", \"hatch-plugin-name @ {plugin_dir.as_uri()}\"]\nbuild-backend = \"hatchling.build\"\n\n[project]\nname = \"my-app\"\nversion = \"0.1.0\"\n\"\"\",\n        encoding='utf-8',\n    )\n    ...\n

Note

This example chooses to ignore copying .git for performance reasons. You may want to ignore more patterns, or copy only specific paths like this plugin does.

"},{"location":"meta/authors/","title":"Authors","text":""},{"location":"meta/authors/#maintainers","title":"Maintainers","text":""},{"location":"meta/authors/#contributors","title":"Contributors","text":""},{"location":"meta/faq/","title":"FAQ","text":""},{"location":"meta/faq/#interoperability","title":"Interoperability","text":"

Q: What is the risk of lock-in?

A: Not much! Other than the plugin system, everything uses Python's established standards by default. Project metadata is based entirely on the standard, the build system is compatible with PEP 517/PEP 660, versioning uses the scheme specified by PEP 440, dependencies are defined with PEP 508 strings, and environments use virtualenv.

Q: Must one use all features?

A: No, all features are optional! You can use just the build system, publish wheels and source distributions that were built by other tools, only use the environment management, etc.

"},{"location":"meta/faq/#libraries-vs-applications","title":"Libraries vs applications","text":"

Q: Are workflows for both libraries and applications supported?

A: Yes, mostly! Applications can utilize environment management just like libraries, and plugins can be used to build projects in arbitrary formats or publish artifacts to arbitrary destinations.

The only caveat is that currently there is no support for re-creating an environment given a set of dependencies in a reproducible manner. Although a standard lock file format may be far off since [PEP 665][] was rejected, resolving capabilities are coming to pip. When that is stabilized, Hatch will add locking functionality and dedicated documentation for managing applications.

"},{"location":"meta/faq/#tool-migration","title":"Tool migration","text":"

Q: How to migrate to Hatch?

"},{"location":"meta/faq/#build-system","title":"Build system","text":"SetuptoolsHatch setup.py MANIFEST.in 
import os\nfrom io import open\n\nfrom setuptools import find_packages, setup\n\nabout = {}\nwith open(os.path.join('src', 'foo', '__about__.py'), 'r', 'utf-8') as f:\n    exec(f.read(), about)\n\nwith open('README.md', 'r', 'utf-8') as f:\n    readme = f.read()\n\nsetup(\n    # Metadata\n    name='foo',\n    version=about['__version__'],\n    description='...',\n    long_description=readme,\n    long_description_content_type='text/markdown',\n    author='...',\n    author_email='...',\n    project_urls={\n        'Documentation': '...',\n        'Source': '...',\n    },\n    classifiers=[\n        '...',\n    ],\n    keywords=[\n        '...',\n    ],\n    python_requires='>=3.8',\n    install_requires=[\n        '...',\n    ],\n    extras_require={\n        'feature': ['...'],\n    },\n\n    # Packaging\n    packages=find_packages(where='src'),\n    package_dir={'': 'src'},\n    package_data={\n        'foo': ['py.typed'],\n    },\n    zip_safe=False,\n    entry_points={\n        'console_scripts': [\n            'foo = foo.cli:main',\n        ],\n    },\n)\n
graft tests\n\nglobal-exclude *.py[cod] __pycache__\n
pyproject.toml 
[build-system]\nrequires = [\"hatchling\"]\nbuild-backend = \"hatchling.build\"\n\n[project]\nname = \"foo\"\ndescription = \"...\"\nreadme = \"README.md\"\nauthors = [\n  { name = \"...\", email = \"...\" },\n]\nclassifiers = [\n  \"...\",\n]\nkeywords = [\n  \"...\",\n]\nrequires-python = \">=3.8\"\ndependencies = [\n  \"...\",\n]\ndynamic = [\"version\"]\n\n[project.urls]\nDocumentation = \"...\"\nSource = \"...\"\n\n[project.optional-dependencies]\nfeature = [\"...\"]\n\n[project.scripts]\nfoo = \"foo.cli:main\"\n\n[tool.hatch.version]\npath = \"src/foo/__about__.py\"\n\n[tool.hatch.build.targets.sdist]\ninclude = [\n  \"/src\",\n  \"/tests\",\n]\n
"},{"location":"meta/faq/#environments","title":"Environments","text":"ToxHatch

Invocation:

tox\n
tox.ini 
[tox]\nenvlist =\n    py{27,38}-{42,3.14}\n    py{38,39}-{9000}-{foo,bar}\n\n[testenv]\nusedevelop = true\ndeps =\n    coverage[toml]\n    pytest\n    pytest-cov\n    foo: cryptography\ncommands =\n    pytest --cov-report=term-missing --cov-config=pyproject.toml --cov=pkg --cov=tests {posargs}\nsetenv =\n    3.14: PRODUCT_VERSION=3.14\n    42: PRODUCT_VERSION=42\n    9000: PRODUCT_VERSION=9000\n    {foo,bar}: EXPERIMENTAL=true\n

Invocation:

hatch run test\n
pyproject.toml hatch.toml 
[tool.hatch.envs.default]\ndependencies = [\n  \"coverage[toml]\",\n  \"pytest\",\n  \"pytest-cov\",\n]\n\n[tool.hatch.envs.default.scripts]\ntest = 'pytest --cov-report=term-missing --cov-config=pyproject.toml --cov=pkg --cov=tests'\n\n[tool.hatch.envs.default.overrides]\nmatrix.version.env-vars = \"PRODUCT_VERSION\"\nmatrix.features.env-vars = \"EXPERIMENTAL=true\"\nmatrix.features.dependencies = [\n  { value = \"cryptography\", if = [\"foo\"] },\n]\n\n[[tool.hatch.envs.default.matrix]]\npython = [\"2.7\", \"3.8\"]\nversion = [\"42\", \"3.14\"]\n\n[[tool.hatch.envs.default.matrix]]\npython = [\"3.8\", \"3.9\"]\nversion = [\"9000\"]\nfeatures = [\"foo\", \"bar\"]\n
[envs.default]\ndependencies = [\n  \"coverage[toml]\",\n  \"pytest\",\n  \"pytest-cov\",\n]\n\n[envs.default.scripts]\ntest = 'pytest --cov-report=term-missing --cov-config=pyproject.toml --cov=pkg --cov=tests'\n\n[envs.default.overrides]\nmatrix.version.env-vars = \"PRODUCT_VERSION\"\nmatrix.features.env-vars = \"EXPERIMENTAL=true\"\nmatrix.features.dependencies = [\n  { value = \"cryptography\", if = [\"foo\"] },\n]\n\n[[envs.default.matrix]]\npython = [\"2.7\", \"3.8\"]\nversion = [\"42\", \"3.14\"]\n\n[[envs.default.matrix]]\npython = [\"3.8\", \"3.9\"]\nversion = [\"9000\"]\nfeatures = [\"foo\", \"bar\"]\n
"},{"location":"meta/faq/#fast-cli","title":"Fast CLI?","text":"

The claim about being faster than other tools is based on timings that are always checked in CI.

Hatch achieves this by using lazy imports, lazily performing computation manually and with functools.cached_property, using hacks like not not ... instead of bool(...), etc.

"},{"location":"plugins/about/","title":"Plugins","text":"

Hatch utilizes pluggy for its plugin functionality.

"},{"location":"plugins/about/#overview","title":"Overview","text":"

All plugins provide registration hooks that return one or more classes that inherit from a particular type interface.

Each registration hook must be decorated by Hatch's hook marker. For example, if you wanted to create a new kind of environment you could do:

hooks.py 
from hatchling.plugin import hookimpl\n\nfrom .plugin import SpecialEnvironment\n\n\n@hookimpl\ndef hatch_register_environment():\n    return SpecialEnvironment\n

The hooks can return a single class or a list of classes.

Every class must define an attribute called PLUGIN_NAME that users will select when they wish to use the plugin. So in the example above, the class might be defined like:

plugin.py 
...\nclass SpecialEnvironment(...):\n    PLUGIN_NAME = 'special'\n    ...\n
"},{"location":"plugins/about/#project-configuration","title":"Project configuration","text":""},{"location":"plugins/about/#naming","title":"Naming","text":"

It is recommended that plugin project names are prefixed with hatch-. For example, if you wanted to make a plugin that provides some functionality for a product named foo you might do:

pyproject.toml 
[project]\nname = \"hatch-foo\"\n
"},{"location":"plugins/about/#discovery","title":"Discovery","text":"

You'll need to define your project as a Python plugin for Hatch:

pyproject.toml 
[project.entry-points.hatch]\nfoo = \"pkg.hooks\"\n

The name of the plugin should be the project name (excluding any hatch- prefix) and the path should represent the module that contains the registration hooks.

"},{"location":"plugins/about/#classifier","title":"Classifier","text":"

Add Framework :: Hatch to your project's classifiers to make it easy to search for Hatch plugins:

pyproject.toml 
[project]\nclassifiers = [\n  ...\n  \"Framework :: Hatch\",\n  ...\n]\n
"},{"location":"plugins/about/#types","title":"Types","text":""},{"location":"plugins/about/#hatchling","title":"Hatchling","text":"

These are all involved in building projects and therefore any defined dependencies are automatically installed in each build environment.

"},{"location":"plugins/about/#hatch","title":"Hatch","text":"

These must be installed in the same environment as Hatch itself.

"},{"location":"plugins/utilities/","title":"Plugin utilities","text":""},{"location":"plugins/utilities/#hatchling.builders.utils.get_reproducible_timestamp","title":"hatchling.builders.utils.get_reproducible_timestamp() -> int","text":"

Returns an int derived from the SOURCE_DATE_EPOCH environment variable; see https://reproducible-builds.org/specs/source-date-epoch/.

The default value will always be: 1580601600

Source code in backend/src/hatchling/builders/utils.py 
def get_reproducible_timestamp() -> int:\n    \"\"\"\n    Returns an `int` derived from the `SOURCE_DATE_EPOCH` environment variable; see\n    https://reproducible-builds.org/specs/source-date-epoch/.\n\n    The default value will always be: `1580601600`\n    \"\"\"\n    return int(os.environ.get('SOURCE_DATE_EPOCH', '1580601600'))\n
"},{"location":"plugins/utilities/#hatchling.builders.config.BuilderConfig","title":"BuilderConfig","text":""},{"location":"plugins/utilities/#hatchling.builders.config.BuilderConfig.directory","title":"directory: str property","text":""},{"location":"plugins/utilities/#hatchling.builders.config.BuilderConfig.ignore_vcs","title":"ignore_vcs: bool property","text":""},{"location":"plugins/utilities/#hatchling.builders.config.BuilderConfig.reproducible","title":"reproducible: bool property","text":"

Whether or not the target should be built in a reproducible manner, defaulting to true.

"},{"location":"plugins/utilities/#hatchling.builders.config.BuilderConfig.dev_mode_dirs","title":"dev_mode_dirs: list[str] property","text":"

Directories which must be added to Python's search path in dev mode.

"},{"location":"plugins/utilities/#hatchling.builders.config.BuilderConfig.versions","title":"versions: list[str] property","text":""},{"location":"plugins/utilities/#hatchling.builders.config.BuilderConfig.dependencies","title":"dependencies: list[str] property","text":""},{"location":"plugins/utilities/#hatchling.builders.config.BuilderConfig.default_include","title":"default_include() -> list","text":""},{"location":"plugins/utilities/#hatchling.builders.config.BuilderConfig.default_exclude","title":"default_exclude() -> list","text":""},{"location":"plugins/utilities/#hatchling.builders.config.BuilderConfig.default_packages","title":"default_packages() -> list","text":""},{"location":"plugins/utilities/#hatchling.builders.config.BuilderConfig.default_only_include","title":"default_only_include() -> list","text":""},{"location":"plugins/utilities/#hatchling.bridge.app.Application","title":"Application","text":"

The way output is displayed can be configured by users.

Important

Never import this directly; Hatch judiciously decides if a type of plugin requires the capabilities herein and will grant access via an attribute.

"},{"location":"plugins/utilities/#hatchling.bridge.app.Application.verbosity","title":"verbosity: int property","text":"

The verbosity level of the application, with 0 as the default.

"},{"location":"plugins/utilities/#hatchling.bridge.app.Application.abort","title":"abort(message: str = '', code: int = 1, **kwargs: Any) -> None","text":"

Terminate the program with the given return code.

"},{"location":"plugins/utilities/#hatchling.bridge.app.Application.display_debug","title":"display_debug(message: str = '', level: int = 1, **kwargs: Any) -> None","text":"

Meant to be used for messages that are not useful for most user experiences. The level option must be between 1 and 3 (inclusive).

"},{"location":"plugins/utilities/#hatchling.bridge.app.Application.display_error","title":"display_error(message: str = '', **kwargs: Any) -> None","text":"

Meant to be used for messages indicating some unrecoverable error.

"},{"location":"plugins/utilities/#hatchling.bridge.app.Application.display_info","title":"display_info(message: str = '', **kwargs: Any) -> None","text":"

Meant to be used for messages conveying basic information.

"},{"location":"plugins/utilities/#hatchling.bridge.app.Application.display_success","title":"display_success(message: str = '', **kwargs: Any) -> None","text":"

Meant to be used for messages indicating some positive outcome.

"},{"location":"plugins/utilities/#hatchling.bridge.app.Application.display_waiting","title":"display_waiting(message: str = '', **kwargs: Any) -> None","text":"

Meant to be used for messages shown before potentially time consuming operations.

"},{"location":"plugins/utilities/#hatchling.bridge.app.Application.display_warning","title":"display_warning(message: str = '', **kwargs: Any) -> None","text":"

Meant to be used for messages conveying important information.

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform","title":"Platform","text":""},{"location":"plugins/utilities/#hatch.utils.platform.Platform.default_shell","title":"default_shell: str property","text":"

Returns the default shell of the system.

On Windows systems first try the SHELL environment variable, if present, followed by the COMSPEC environment variable, defaulting to cmd. On all other platforms only the SHELL environment variable will be used, defaulting to bash.

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform.modules","title":"modules: LazilyLoadedModules property","text":"

Accessor for lazily loading modules that either take multiple milliseconds to import (like shutil and subprocess) or are not used on all platforms (like shlex).

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform.home","title":"home: Path property","text":"

The user's home directory as a path-like object.

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform.name","title":"name: str property","text":"

One of the following:

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform.windows","title":"windows: bool property","text":"

Indicates whether Hatch is running on Windows.

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform.macos","title":"macos: bool property","text":"

Indicates whether Hatch is running on macOS.

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform.linux","title":"linux: bool property","text":"

Indicates whether Hatch is running on neither Windows nor macOS.

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform.format_for_subprocess","title":"format_for_subprocess(command: str | list[str], *, shell: bool) -> str | list[str]","text":"

Format the given command in a cross-platform manner for immediate consumption by subprocess utilities.

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform.run_command","title":"run_command(command: str | list[str], *, shell: bool = False, **kwargs: Any) -> CompletedProcess","text":"

Equivalent to the standard library's subprocess.run, with the command first being properly formatted.

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform.check_command","title":"check_command(command: str | list[str], *, shell: bool = False, **kwargs: Any) -> CompletedProcess","text":"

Equivalent to run_command, but non-zero exit codes will gracefully end program execution.

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform.check_command_output","title":"check_command_output(command: str | list[str], *, shell: bool = False, **kwargs: Any) -> str","text":"

Equivalent to the output from the process returned by capture_process, but non-zero exit codes will gracefully end program execution.

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform.capture_process","title":"capture_process(command: str | list[str], *, shell: bool = False, **kwargs: Any) -> Popen","text":"

Equivalent to the standard library's subprocess.Popen, with all output captured by stdout and the command first being properly formatted.

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform.exit_with_command","title":"exit_with_command(command: list[str]) -> None","text":"

Run the given command and exit with its exit code. On non-Windows systems, this uses the standard library's os.execvp.

"},{"location":"plugins/utilities/#hatch.env.context.EnvironmentContextFormatter","title":"EnvironmentContextFormatter","text":""},{"location":"plugins/utilities/#hatch.env.context.EnvironmentContextFormatter.formatters","title":"formatters()","text":"

This returns a mapping of supported field names to their respective formatting functions. Each function accepts 2 arguments:

"},{"location":"plugins/build-hook/custom/","title":"Custom build hook","text":"

This is a custom class in a given Python file that inherits from the BuildHookInterface.

"},{"location":"plugins/build-hook/custom/#configuration","title":"Configuration","text":"

The build hook plugin name is custom.

pyproject.toml hatch.toml 
[tool.hatch.build.hooks.custom]\n[tool.hatch.build.targets.<TARGET_NAME>.hooks.custom]\n
[build.hooks.custom]\n[build.targets.<TARGET_NAME>.hooks.custom]\n
"},{"location":"plugins/build-hook/custom/#options","title":"Options","text":"Option Default Description path hatch_build.py The path of the Python file"},{"location":"plugins/build-hook/custom/#example","title":"Example","text":"hatch_build.py 
from hatchling.builders.hooks.plugin.interface import BuildHookInterface\n\n\nclass CustomBuildHook(BuildHookInterface):\n    ...\n

If multiple subclasses are found, you must define a function named get_build_hook that returns the desired build hook.

Note

Any defined PLUGIN_NAME is ignored and will always be custom.

"},{"location":"plugins/build-hook/reference/","title":"Build hook plugins","text":"

A build hook provides code that will be executed at various stages of the build process. See the documentation for build hook configuration.

"},{"location":"plugins/build-hook/reference/#known-third-party","title":"Known third-party","text":""},{"location":"plugins/build-hook/reference/#overview","title":"Overview","text":"

Build hooks run for every selected version of build targets.

The initialization stage occurs immediately before each build and the finalization stage occurs immediately after. Each stage has the opportunity to view or modify build data.

"},{"location":"plugins/build-hook/reference/#build-data","title":"Build data","text":"

Build data is a simple mapping whose contents can influence the behavior of builds. Which fields exist and are recognized depends on each build target.

The following fields are always present and recognized by the build system itself:

Field Type Description artifacts list[str] This is a list of extra artifact patterns and should generally only be appended to force_include dict[str, str] This is a mapping of extra forced inclusion paths, with this mapping taking precedence in case of conflicts build_hooks tuple[str, ...] This is an immutable sequence of the names of the configured build hooks and matches the order in which they run

Attention

While user-facing TOML options are hyphenated, build data fields should be named with underscores to allow plugins to use them as valid Python identifiers.

"},{"location":"plugins/build-hook/reference/#notes","title":"Notes","text":"

In some cases it may be necessary to use force_include rather than artifacts. For example, say that you want to install a lib.so directly at the root of site-packages and a project defines a package src/foo. If you create src/lib.so, there will never be a match because the directory traversal starts at src/foo rather than src. In that case you must do either:

build_data['force_include']['src/lib.so'] = 'src/lib.so'\n

or

build_data['force_include']['/absolute/path/to/src/lib.so'] = 'src/lib.so'\n
"},{"location":"plugins/build-hook/reference/#hatchling.builders.hooks.plugin.interface.BuildHookInterface","title":"BuildHookInterface","text":"

Example usage:

plugin.py hooks.py 
from hatchling.builders.hooks.plugin.interface import BuildHookInterface\n\n\nclass SpecialBuildHook(BuildHookInterface):\n    PLUGIN_NAME = 'special'\n    ...\n
from hatchling.plugin import hookimpl\n\nfrom .plugin import SpecialBuildHook\n\n\n@hookimpl\ndef hatch_register_build_hook():\n    return SpecialBuildHook\n
Source code in backend/src/hatchling/builders/hooks/plugin/interface.py 
class BuildHookInterface(Generic[BuilderConfigBound]):  # no cov\n    \"\"\"\n    Example usage:\n\n    ```python tab=\"plugin.py\"\n    from hatchling.builders.hooks.plugin.interface import BuildHookInterface\n\n\n    class SpecialBuildHook(BuildHookInterface):\n        PLUGIN_NAME = 'special'\n        ...\n    ```\n\n    ```python tab=\"hooks.py\"\n    from hatchling.plugin import hookimpl\n\n    from .plugin import SpecialBuildHook\n\n\n    @hookimpl\n    def hatch_register_build_hook():\n        return SpecialBuildHook\n    ```\n    \"\"\"\n\n    PLUGIN_NAME = ''\n    \"\"\"The name used for selection.\"\"\"\n\n    def __init__(\n        self,\n        root: str,\n        config: dict[str, Any],\n        build_config: BuilderConfigBound,\n        metadata: ProjectMetadata,\n        directory: str,\n        target_name: str,\n        app: Application | None = None,\n    ) -> None:\n        self.__root = root\n        self.__config = config\n        self.__build_config = build_config\n        self.__metadata = metadata\n        self.__directory = directory\n        self.__target_name = target_name\n        self.__app = app\n\n    @property\n    def app(self) -> Application:\n        \"\"\"\n        An instance of [Application](../utilities.md#hatchling.bridge.app.Application).\n        \"\"\"\n        if self.__app is None:\n            from hatchling.bridge.app import Application\n\n            self.__app = cast(Application, Application().get_safe_application())\n\n        return self.__app\n\n    @property\n    def root(self) -> str:\n        \"\"\"\n        The root of the project tree.\n        \"\"\"\n        return self.__root\n\n    @property\n    def config(self) -> dict[str, Any]:\n        \"\"\"\n        The cumulative hook configuration.\n\n        ```toml config-example\n        [tool.hatch.build.hooks.<PLUGIN_NAME>]\n        [tool.hatch.build.targets.<TARGET_NAME>.hooks.<PLUGIN_NAME>]\n        ```\n        \"\"\"\n        return self.__config\n\n    @property\n    def metadata(self) -> ProjectMetadata:\n        # Undocumented for now\n        return self.__metadata\n\n    @property\n    def build_config(self) -> BuilderConfigBound:\n        \"\"\"\n        An instance of [BuilderConfig](../utilities.md#hatchling.builders.config.BuilderConfig).\n        \"\"\"\n        return self.__build_config\n\n    @property\n    def directory(self) -> str:\n        \"\"\"\n        The build directory.\n        \"\"\"\n        return self.__directory\n\n    @property\n    def target_name(self) -> str:\n        \"\"\"\n        The plugin name of the build target.\n        \"\"\"\n        return self.__target_name\n\n    def clean(self, versions: list[str]) -> None:\n        \"\"\"\n        This occurs before the build process if the `-c`/`--clean` flag was passed to\n        the [`build`](../../cli/reference.md#hatch-build) command, or when invoking\n        the [`clean`](../../cli/reference.md#hatch-clean) command.\n        \"\"\"\n\n    def initialize(self, version: str, build_data: dict[str, Any]) -> None:\n        \"\"\"\n        This occurs immediately before each build.\n\n        Any modifications to the build data will be seen by the build target.\n        \"\"\"\n\n    def finalize(self, version: str, build_data: dict[str, Any], artifact_path: str) -> None:\n        \"\"\"\n        This occurs immediately after each build and will not run if the `--hooks-only` flag\n        was passed to the [`build`](../../cli/reference.md#hatch-build) command.\n\n        The build data will reflect any modifications done by the target during the build.\n        \"\"\"\n
"},{"location":"plugins/build-hook/reference/#hatchling.builders.hooks.plugin.interface.BuildHookInterface.PLUGIN_NAME","title":"PLUGIN_NAME = '' class-attribute instance-attribute","text":"

The name used for selection.

"},{"location":"plugins/build-hook/reference/#hatchling.builders.hooks.plugin.interface.BuildHookInterface.app","title":"app: Application property","text":"

An instance of Application.

"},{"location":"plugins/build-hook/reference/#hatchling.builders.hooks.plugin.interface.BuildHookInterface.root","title":"root: str property","text":"

The root of the project tree.

"},{"location":"plugins/build-hook/reference/#hatchling.builders.hooks.plugin.interface.BuildHookInterface.config","title":"config: dict[str, Any] property","text":"

The cumulative hook configuration.

pyproject.toml hatch.toml 
[tool.hatch.build.hooks.<PLUGIN_NAME>]\n[tool.hatch.build.targets.<TARGET_NAME>.hooks.<PLUGIN_NAME>]\n
[build.hooks.<PLUGIN_NAME>]\n[build.targets.<TARGET_NAME>.hooks.<PLUGIN_NAME>]\n
"},{"location":"plugins/build-hook/reference/#hatchling.builders.hooks.plugin.interface.BuildHookInterface.build_config","title":"build_config: BuilderConfigBound property","text":"

An instance of BuilderConfig.

"},{"location":"plugins/build-hook/reference/#hatchling.builders.hooks.plugin.interface.BuildHookInterface.target_name","title":"target_name: str property","text":"

The plugin name of the build target.

"},{"location":"plugins/build-hook/reference/#hatchling.builders.hooks.plugin.interface.BuildHookInterface.directory","title":"directory: str property","text":"

The build directory.

"},{"location":"plugins/build-hook/reference/#hatchling.builders.hooks.plugin.interface.BuildHookInterface.clean","title":"clean(versions: list[str]) -> None","text":"

This occurs before the build process if the -c/--clean flag was passed to the build command, or when invoking the clean command.

Source code in backend/src/hatchling/builders/hooks/plugin/interface.py 
def clean(self, versions: list[str]) -> None:\n    \"\"\"\n    This occurs before the build process if the `-c`/`--clean` flag was passed to\n    the [`build`](../../cli/reference.md#hatch-build) command, or when invoking\n    the [`clean`](../../cli/reference.md#hatch-clean) command.\n    \"\"\"\n
"},{"location":"plugins/build-hook/reference/#hatchling.builders.hooks.plugin.interface.BuildHookInterface.initialize","title":"initialize(version: str, build_data: dict[str, Any]) -> None","text":"

This occurs immediately before each build.

Any modifications to the build data will be seen by the build target.

Source code in backend/src/hatchling/builders/hooks/plugin/interface.py 
def initialize(self, version: str, build_data: dict[str, Any]) -> None:\n    \"\"\"\n    This occurs immediately before each build.\n\n    Any modifications to the build data will be seen by the build target.\n    \"\"\"\n
"},{"location":"plugins/build-hook/reference/#hatchling.builders.hooks.plugin.interface.BuildHookInterface.finalize","title":"finalize(version: str, build_data: dict[str, Any], artifact_path: str) -> None","text":"

This occurs immediately after each build and will not run if the --hooks-only flag was passed to the build command.

The build data will reflect any modifications done by the target during the build.

Source code in backend/src/hatchling/builders/hooks/plugin/interface.py 
def finalize(self, version: str, build_data: dict[str, Any], artifact_path: str) -> None:\n    \"\"\"\n    This occurs immediately after each build and will not run if the `--hooks-only` flag\n    was passed to the [`build`](../../cli/reference.md#hatch-build) command.\n\n    The build data will reflect any modifications done by the target during the build.\n    \"\"\"\n
"},{"location":"plugins/build-hook/version/","title":"Version build hook","text":"

This writes the project's version to a file.

"},{"location":"plugins/build-hook/version/#configuration","title":"Configuration","text":"

The build hook plugin name is version.

pyproject.toml hatch.toml 
[tool.hatch.build.hooks.version]\n[tool.hatch.build.targets.<TARGET_NAME>.hooks.version]\n
[build.hooks.version]\n[build.targets.<TARGET_NAME>.hooks.version]\n
"},{"location":"plugins/build-hook/version/#options","title":"Options","text":"Option Description path (required) A relative path to the desired file template A string representing the entire contents of path that will be formatted with a version variable pattern Rather than updating the entire file, a regular expression may be used that has a named group called version that represents the version. If set to true, a pattern will be used that looks for a variable named __version__ or VERSION that is set to a string containing the version, optionally prefixed with the lowercase letter v."},{"location":"plugins/builder/app/","title":"Application builder","text":"

This uses PyApp to build an application that is able to bootstrap itself at runtime.

Note

This requires an installation of Rust.

"},{"location":"plugins/builder/app/#configuration","title":"Configuration","text":"

The builder plugin name is app.

pyproject.toml hatch.toml 
[tool.hatch.build.targets.app]\n
[build.targets.app]\n
"},{"location":"plugins/builder/app/#options","title":"Options","text":"Option Default Description scripts all defined An array of defined script names to limit what gets built python-version latest compatible Python minor version The Python version ID to use pyapp-version The version of PyApp to use"},{"location":"plugins/builder/app/#build-behavior","title":"Build behavior","text":"

If any scripts are defined then each one will be built (limited by the scripts option). Otherwise, a single executable will be built based on the project name assuming there is an equivalently named module with a __main__.py file.

Every executable will be built inside an app directory in the output directory.

If the CARGO environment variable is set then that path will be used as the executable for performing builds.

If the CARGO_BUILD_TARGET environment variable is set then its value will be appended to the file name stems.

If the PYAPP_REPO environment variable is set then a local build will be performed inside that directory rather than installing from crates.io. Note that this is required if the CARGO environment variable refers to cross.

"},{"location":"plugins/builder/custom/","title":"Custom builder","text":"

This is a custom class in a given Python file that inherits from the BuilderInterface.

"},{"location":"plugins/builder/custom/#configuration","title":"Configuration","text":"

The builder plugin name is custom.

pyproject.toml hatch.toml 
[tool.hatch.build.targets.custom]\n
[build.targets.custom]\n
"},{"location":"plugins/builder/custom/#options","title":"Options","text":"Option Default Description path hatch_build.py The path of the Python file"},{"location":"plugins/builder/custom/#example","title":"Example","text":"hatch_build.py 
from hatchling.builders.plugin.interface import BuilderInterface\n\n\nclass CustomBuilder(BuilderInterface):\n    ...\n

If multiple subclasses are found, you must define a function named get_builder that returns the desired builder.

Note

Any defined PLUGIN_NAME is ignored and will always be custom.

"},{"location":"plugins/builder/reference/","title":"Builder plugins","text":"

See the documentation for build configuration.

"},{"location":"plugins/builder/reference/#known-third-party","title":"Known third-party","text":""},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface","title":"BuilderInterface","text":"

Example usage:

plugin.py hooks.py 
from hatchling.builders.plugin.interface import BuilderInterface\n\n\nclass SpecialBuilder(BuilderInterface):\n    PLUGIN_NAME = 'special'\n    ...\n
from hatchling.plugin import hookimpl\n\nfrom .plugin import SpecialBuilder\n\n\n@hookimpl\ndef hatch_register_builder():\n    return SpecialBuilder\n
Source code in backend/src/hatchling/builders/plugin/interface.py 
class BuilderInterface(ABC, Generic[BuilderConfigBound, PluginManagerBound]):\n    \"\"\"\n    Example usage:\n\n    ```python tab=\"plugin.py\"\n    from hatchling.builders.plugin.interface import BuilderInterface\n\n\n    class SpecialBuilder(BuilderInterface):\n        PLUGIN_NAME = 'special'\n        ...\n    ```\n\n    ```python tab=\"hooks.py\"\n    from hatchling.plugin import hookimpl\n\n    from .plugin import SpecialBuilder\n\n\n    @hookimpl\n    def hatch_register_builder():\n        return SpecialBuilder\n    ```\n    \"\"\"\n\n    PLUGIN_NAME = ''\n    \"\"\"The name used for selection.\"\"\"\n\n    def __init__(\n        self,\n        root: str,\n        plugin_manager: PluginManagerBound | None = None,\n        config: dict[str, Any] | None = None,\n        metadata: ProjectMetadata | None = None,\n        app: Application | None = None,\n    ) -> None:\n        self.__root = root\n        self.__plugin_manager = cast(PluginManagerBound, plugin_manager)\n        self.__raw_config = config\n        self.__metadata = metadata\n        self.__app = app\n        self.__config = cast(BuilderConfigBound, None)\n        self.__project_config: dict[str, Any] | None = None\n        self.__hatch_config: dict[str, Any] | None = None\n        self.__build_config: dict[str, Any] | None = None\n        self.__build_targets: list[str] | None = None\n        self.__target_config: dict[str, Any] | None = None\n\n        # Metadata\n        self.__project_id: str | None = None\n\n    def build(\n        self,\n        *,\n        directory: str | None = None,\n        versions: list[str] | None = None,\n        hooks_only: bool | None = None,\n        clean: bool | None = None,\n        clean_hooks_after: bool | None = None,\n        clean_only: bool | None = False,\n    ) -> Generator[str, None, None]:\n        # Fail early for invalid project metadata\n        self.metadata.validate_fields()\n\n        if directory is None:\n            directory = (\n                self.config.normalize_build_directory(os.environ[BuildEnvVars.LOCATION])\n                if BuildEnvVars.LOCATION in os.environ\n                else self.config.directory\n            )\n\n        if not os.path.isdir(directory):\n            os.makedirs(directory)\n\n        version_api = self.get_version_api()\n\n        versions = versions or self.config.versions\n        if versions:\n            unknown_versions = set(versions) - set(version_api)\n            if unknown_versions:\n                message = (\n                    f'Unknown versions for target `{self.PLUGIN_NAME}`: {\", \".join(map(str, sorted(unknown_versions)))}'\n                )\n                raise ValueError(message)\n\n        if hooks_only is None:\n            hooks_only = env_var_enabled(BuildEnvVars.HOOKS_ONLY)\n\n        configured_build_hooks = self.get_build_hooks(directory)\n        build_hooks = list(configured_build_hooks.values())\n\n        if clean_only:\n            clean = True\n        elif clean is None:\n            clean = env_var_enabled(BuildEnvVars.CLEAN)\n        if clean:\n            if not hooks_only:\n                self.clean(directory, versions)\n\n            for build_hook in build_hooks:\n                build_hook.clean(versions)\n\n            if clean_only:\n                return\n\n        if clean_hooks_after is None:\n            clean_hooks_after = env_var_enabled(BuildEnvVars.CLEAN_HOOKS_AFTER)\n\n        for version in versions:\n            self.app.display_debug(f'Building `{self.PLUGIN_NAME}` version `{version}`')\n\n            build_data = self.get_default_build_data()\n            self.set_build_data_defaults(build_data)\n\n            # Allow inspection of configured build hooks and the order in which they run\n            build_data['build_hooks'] = tuple(configured_build_hooks)\n\n            # Execute all `initialize` build hooks\n            for build_hook in build_hooks:\n                build_hook.initialize(version, build_data)\n\n            if hooks_only:\n                self.app.display_debug(f'Only ran build hooks for `{self.PLUGIN_NAME}` version `{version}`')\n                continue\n\n            # Build the artifact\n            with self.config.set_build_data(build_data):\n                artifact = version_api[version](directory, **build_data)\n\n            # Execute all `finalize` build hooks\n            for build_hook in build_hooks:\n                build_hook.finalize(version, build_data, artifact)\n\n            if clean_hooks_after:\n                for build_hook in build_hooks:\n                    build_hook.clean([version])\n\n            yield artifact\n\n    def recurse_included_files(self) -> Iterable[IncludedFile]:\n        \"\"\"\n        Returns a consistently generated series of file objects for every file that should be distributed. Each file\n        object has three `str` attributes:\n\n        - `path` - the absolute path\n        - `relative_path` - the path relative to the project root; will be an empty string for external files\n        - `distribution_path` - the path to be distributed as\n        \"\"\"\n        yield from self.recurse_selected_project_files()\n        yield from self.recurse_forced_files(self.config.get_force_include())\n\n    def recurse_selected_project_files(self) -> Iterable[IncludedFile]:\n        if self.config.only_include:\n            yield from self.recurse_explicit_files(self.config.only_include)\n        else:\n            yield from self.recurse_project_files()\n\n    def recurse_project_files(self) -> Iterable[IncludedFile]:\n        for root, dirs, files in safe_walk(self.root):\n            relative_path = get_relative_path(root, self.root)\n\n            dirs[:] = sorted(d for d in dirs if not self.config.directory_is_excluded(d, relative_path))\n\n            files.sort()\n            is_package = '__init__.py' in files\n            for f in files:\n                relative_file_path = os.path.join(relative_path, f)\n                distribution_path = self.config.get_distribution_path(relative_file_path)\n                if self.config.path_is_reserved(distribution_path):\n                    continue\n\n                if self.config.include_path(relative_file_path, is_package=is_package):\n                    yield IncludedFile(\n                        os.path.join(root, f), relative_file_path, self.config.get_distribution_path(relative_file_path)\n                    )\n\n    def recurse_forced_files(self, inclusion_map: dict[str, str]) -> Iterable[IncludedFile]:\n        for source, target_path in inclusion_map.items():\n            external = not source.startswith(self.root)\n            if os.path.isfile(source):\n                yield IncludedFile(\n                    source,\n                    '' if external else os.path.relpath(source, self.root),\n                    self.config.get_distribution_path(target_path),\n                )\n            elif os.path.isdir(source):\n                for root, dirs, files in safe_walk(source):\n                    relative_directory = get_relative_path(root, source)\n\n                    dirs[:] = sorted(d for d in dirs if d not in EXCLUDED_DIRECTORIES)\n\n                    files.sort()\n                    for f in files:\n                        relative_file_path = os.path.join(target_path, relative_directory, f)\n                        distribution_path = self.config.get_distribution_path(relative_file_path)\n                        if not self.config.path_is_reserved(distribution_path):\n                            yield IncludedFile(\n                                os.path.join(root, f),\n                                '' if external else relative_file_path,\n                                distribution_path,\n                            )\n            else:\n                msg = f'Forced include not found: {source}'\n                raise FileNotFoundError(msg)\n\n    def recurse_explicit_files(self, inclusion_map: dict[str, str]) -> Iterable[IncludedFile]:\n        for source, target_path in inclusion_map.items():\n            external = not source.startswith(self.root)\n            if os.path.isfile(source):\n                distribution_path = self.config.get_distribution_path(target_path)\n                if not self.config.path_is_reserved(distribution_path):\n                    yield IncludedFile(\n                        source,\n                        '' if external else os.path.relpath(source, self.root),\n                        self.config.get_distribution_path(target_path),\n                    )\n            elif os.path.isdir(source):\n                for root, dirs, files in safe_walk(source):\n                    relative_directory = get_relative_path(root, source)\n\n                    dirs[:] = sorted(d for d in dirs if d not in EXCLUDED_DIRECTORIES)\n\n                    files.sort()\n                    is_package = '__init__.py' in files\n                    for f in files:\n                        relative_file_path = os.path.join(target_path, relative_directory, f)\n                        distribution_path = self.config.get_distribution_path(relative_file_path)\n                        if self.config.path_is_reserved(distribution_path):\n                            continue\n\n                        if self.config.include_path(relative_file_path, explicit=True, is_package=is_package):\n                            yield IncludedFile(\n                                os.path.join(root, f), '' if external else relative_file_path, distribution_path\n                            )\n\n    @property\n    def root(self) -> str:\n        \"\"\"\n        The root of the project tree.\n        \"\"\"\n        return self.__root\n\n    @property\n    def plugin_manager(self) -> PluginManagerBound:\n        if self.__plugin_manager is None:\n            from hatchling.plugin.manager import PluginManager\n\n            self.__plugin_manager = PluginManager()\n\n        return self.__plugin_manager\n\n    @property\n    def metadata(self) -> ProjectMetadata:\n        if self.__metadata is None:\n            from hatchling.metadata.core import ProjectMetadata\n\n            self.__metadata = ProjectMetadata(self.root, self.plugin_manager, self.__raw_config)\n\n        return self.__metadata\n\n    @property\n    def app(self) -> Application:\n        \"\"\"\n        An instance of [Application](../utilities.md#hatchling.bridge.app.Application).\n        \"\"\"\n        if self.__app is None:\n            from hatchling.bridge.app import Application\n\n            self.__app = cast(Application, Application().get_safe_application())\n\n        return self.__app\n\n    @property\n    def raw_config(self) -> dict[str, Any]:\n        if self.__raw_config is None:\n            self.__raw_config = self.metadata.config\n\n        return self.__raw_config\n\n    @property\n    def project_config(self) -> dict[str, Any]:\n        if self.__project_config is None:\n            self.__project_config = self.metadata.core.config\n\n        return self.__project_config\n\n    @property\n    def hatch_config(self) -> dict[str, Any]:\n        if self.__hatch_config is None:\n            self.__hatch_config = self.metadata.hatch.config\n\n        return self.__hatch_config\n\n    @property\n    def config(self) -> BuilderConfigBound:\n        \"\"\"\n        An instance of [BuilderConfig](../utilities.md#hatchling.builders.config.BuilderConfig).\n        \"\"\"\n        if self.__config is None:\n            self.__config = self.get_config_class()(\n                self, self.root, self.PLUGIN_NAME, self.build_config, self.target_config\n            )\n\n        return self.__config\n\n    @property\n    def build_config(self) -> dict[str, Any]:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.build]\n        ```\n        \"\"\"\n        if self.__build_config is None:\n            self.__build_config = self.metadata.hatch.build_config\n\n        return self.__build_config\n\n    @property\n    def target_config(self) -> dict[str, Any]:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.build.targets.<PLUGIN_NAME>]\n        ```\n        \"\"\"\n        if self.__target_config is None:\n            target_config: dict[str, Any] = self.metadata.hatch.build_targets.get(self.PLUGIN_NAME, {})\n            if not isinstance(target_config, dict):\n                message = f'Field `tool.hatch.build.targets.{self.PLUGIN_NAME}` must be a table'\n                raise TypeError(message)\n\n            self.__target_config = target_config\n\n        return self.__target_config\n\n    @property\n    def project_id(self) -> str:\n        if self.__project_id is None:\n            self.__project_id = f'{self.normalize_file_name_component(self.metadata.core.name)}-{self.metadata.version}'\n\n        return self.__project_id\n\n    def get_build_hooks(self, directory: str) -> dict[str, BuildHookInterface]:\n        configured_build_hooks = {}\n        for hook_name, config in self.config.hook_config.items():\n            build_hook = self.plugin_manager.build_hook.get(hook_name)\n            if build_hook is None:\n                from hatchling.plugin.exceptions import UnknownPluginError\n\n                message = f'Unknown build hook: {hook_name}'\n                raise UnknownPluginError(message)\n\n            configured_build_hooks[hook_name] = build_hook(\n                self.root, config, self.config, self.metadata, directory, self.PLUGIN_NAME, self.app\n            )\n\n        return configured_build_hooks\n\n    @abstractmethod\n    def get_version_api(self) -> dict[str, Callable]:\n        \"\"\"\n        A mapping of `str` versions to a callable that is used for building.\n        Each callable must have the following signature:\n\n        ```python\n        def ...(build_dir: str, build_data: dict) -> str:\n        ```\n\n        The return value must be the absolute path to the built artifact.\n        \"\"\"\n\n    def get_default_versions(self) -> list[str]:\n        \"\"\"\n        A list of versions to build when users do not specify any, defaulting to all versions.\n        \"\"\"\n        return list(self.get_version_api())\n\n    def get_default_build_data(self) -> dict[str, Any]:  # noqa: PLR6301\n        \"\"\"\n        A mapping that can be modified by [build hooks](../build-hook/reference.md) to influence the behavior of builds.\n        \"\"\"\n        return {}\n\n    def set_build_data_defaults(self, build_data: dict[str, Any]) -> None:  # noqa: PLR6301\n        build_data.setdefault('artifacts', [])\n        build_data.setdefault('force_include', {})\n\n    def clean(self, directory: str, versions: list[str]) -> None:\n        \"\"\"\n        Called before builds if the `-c`/`--clean` flag was passed to the\n        [`build`](../../cli/reference.md#hatch-build) command.\n        \"\"\"\n\n    @classmethod\n    def get_config_class(cls) -> type[BuilderConfig]:\n        \"\"\"\n        Must return a subclass of [BuilderConfig](../utilities.md#hatchling.builders.config.BuilderConfig).\n        \"\"\"\n        return BuilderConfig\n\n    @staticmethod\n    def normalize_file_name_component(file_name: str) -> str:\n        \"\"\"\n        https://peps.python.org/pep-0427/#escaping-and-unicode\n        \"\"\"\n        return re.sub(r'[^\\w\\d.]+', '_', file_name, flags=re.UNICODE)\n
"},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface.PLUGIN_NAME","title":"PLUGIN_NAME = '' class-attribute instance-attribute","text":"

The name used for selection.

"},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface.app","title":"app: Application property","text":"

An instance of Application.

"},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface.root","title":"root: str property","text":"

The root of the project tree.

"},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface.build_config","title":"build_config: dict[str, Any] property","text":"pyproject.toml hatch.toml 
[tool.hatch.build]\n
[build]\n
"},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface.target_config","title":"target_config: dict[str, Any] property","text":"pyproject.toml hatch.toml 
[tool.hatch.build.targets.<PLUGIN_NAME>]\n
[build.targets.<PLUGIN_NAME>]\n
"},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface.config","title":"config: BuilderConfigBound property","text":"

An instance of BuilderConfig.

"},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface.get_config_class","title":"get_config_class() -> type[BuilderConfig] classmethod","text":"

Must return a subclass of BuilderConfig.

Source code in backend/src/hatchling/builders/plugin/interface.py 
@classmethod\ndef get_config_class(cls) -> type[BuilderConfig]:\n    \"\"\"\n    Must return a subclass of [BuilderConfig](../utilities.md#hatchling.builders.config.BuilderConfig).\n    \"\"\"\n    return BuilderConfig\n
"},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface.get_version_api","title":"get_version_api() -> dict[str, Callable] abstractmethod","text":"

A mapping of str versions to a callable that is used for building. Each callable must have the following signature:

def ...(build_dir: str, build_data: dict) -> str:\n

The return value must be the absolute path to the built artifact.

Source code in backend/src/hatchling/builders/plugin/interface.py 
@abstractmethod\ndef get_version_api(self) -> dict[str, Callable]:\n    \"\"\"\n    A mapping of `str` versions to a callable that is used for building.\n    Each callable must have the following signature:\n\n    ```python\n    def ...(build_dir: str, build_data: dict) -> str:\n    ```\n\n    The return value must be the absolute path to the built artifact.\n    \"\"\"\n
"},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface.get_default_versions","title":"get_default_versions() -> list[str]","text":"

A list of versions to build when users do not specify any, defaulting to all versions.

Source code in backend/src/hatchling/builders/plugin/interface.py 
def get_default_versions(self) -> list[str]:\n    \"\"\"\n    A list of versions to build when users do not specify any, defaulting to all versions.\n    \"\"\"\n    return list(self.get_version_api())\n
"},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface.clean","title":"clean(directory: str, versions: list[str]) -> None","text":"

Called before builds if the -c/--clean flag was passed to the build command.

Source code in backend/src/hatchling/builders/plugin/interface.py 
def clean(self, directory: str, versions: list[str]) -> None:\n    \"\"\"\n    Called before builds if the `-c`/`--clean` flag was passed to the\n    [`build`](../../cli/reference.md#hatch-build) command.\n    \"\"\"\n
"},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface.recurse_included_files","title":"recurse_included_files() -> Iterable[IncludedFile]","text":"

Returns a consistently generated series of file objects for every file that should be distributed. Each file object has three str attributes:

Source code in backend/src/hatchling/builders/plugin/interface.py 
def recurse_included_files(self) -> Iterable[IncludedFile]:\n    \"\"\"\n    Returns a consistently generated series of file objects for every file that should be distributed. Each file\n    object has three `str` attributes:\n\n    - `path` - the absolute path\n    - `relative_path` - the path relative to the project root; will be an empty string for external files\n    - `distribution_path` - the path to be distributed as\n    \"\"\"\n    yield from self.recurse_selected_project_files()\n    yield from self.recurse_forced_files(self.config.get_force_include())\n
"},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface.get_default_build_data","title":"get_default_build_data() -> dict[str, Any]","text":"

A mapping that can be modified by build hooks to influence the behavior of builds.

Source code in backend/src/hatchling/builders/plugin/interface.py 
def get_default_build_data(self) -> dict[str, Any]:  # noqa: PLR6301\n    \"\"\"\n    A mapping that can be modified by [build hooks](../build-hook/reference.md) to influence the behavior of builds.\n    \"\"\"\n    return {}\n
"},{"location":"plugins/builder/sdist/","title":"Source distribution builder","text":"

A source distribution, or sdist, is an archive of Python \"source code\". Although largely unspecified, by convention it should include everything that is required to build a wheel without making network requests.

"},{"location":"plugins/builder/sdist/#configuration","title":"Configuration","text":"

The builder plugin name is sdist.

pyproject.toml hatch.toml 
[tool.hatch.build.targets.sdist]\n
[build.targets.sdist]\n
"},{"location":"plugins/builder/sdist/#options","title":"Options","text":"Option Default Description core-metadata-version \"2.1\" The version of core metadata to use strict-naming true Whether or not file names should contain the normalized version of the project name support-legacy false Whether or not to include a setup.py file to support legacy installation mechanisms"},{"location":"plugins/builder/sdist/#versions","title":"Versions","text":"Version Description standard (default) The latest conventional format"},{"location":"plugins/builder/sdist/#default-file-selection","title":"Default file selection","text":"

When the user has not set any file selection options, all files that are not ignored by your VCS will be included.

Note

The following files are always included and cannot be excluded:

"},{"location":"plugins/builder/sdist/#reproducibility","title":"Reproducibility","text":"

Reproducible builds are supported.

"},{"location":"plugins/builder/sdist/#build-data","title":"Build data","text":"

This is data that can be modified by build hooks.

Data Default Description dependencies Extra project dependencies"},{"location":"plugins/builder/wheel/","title":"Wheel builder","text":"

A wheel is a binary distribution of a Python package that can be installed directly into an environment.

"},{"location":"plugins/builder/wheel/#configuration","title":"Configuration","text":"

The builder plugin name is wheel.

pyproject.toml hatch.toml 
[tool.hatch.build.targets.wheel]\n
[build.targets.wheel]\n
"},{"location":"plugins/builder/wheel/#options","title":"Options","text":"Option Default Description core-metadata-version \"2.1\" The version of core metadata to use shared-data A mapping similar to the forced inclusion option corresponding to data that will be installed globally in a given Python environment, usually under sys.prefix extra-metadata A mapping similar to the forced inclusion option corresponding to extra metadata that will be shipped in a directory named extra_metadata strict-naming true Whether or not file names should contain the normalized version of the project name macos-max-compat true Whether or not on macOS, when build hooks have set the infer_tag build data, the wheel name should signal broad support rather than specific versions for newer SDK versions.Note: The default will become false, and this option eventually removed, sometime after consumers like pip start supporting these newer SDK versions. bypass-selection false Whether or not to suppress the error when one has not defined any file selection options and all heuristics have failed to determine what to ship"},{"location":"plugins/builder/wheel/#versions","title":"Versions","text":"Version Description standard (default) The latest standardized format editable A wheel that only ships .pth files or import hooks for real-time development"},{"location":"plugins/builder/wheel/#default-file-selection","title":"Default file selection","text":"

When the user has not set any file selection options, the project name will be used to determine the package to ship in the following heuristic order:

  1. <NAME>/__init__.py
  2. src/<NAME>/__init__.py
  3. <NAME>.py
  4. <NAMESPACE>/<NAME>/__init__.py

If none of these heuristics are satisfied, an error will be raised.

"},{"location":"plugins/builder/wheel/#reproducibility","title":"Reproducibility","text":"

Reproducible builds are supported.

"},{"location":"plugins/builder/wheel/#build-data","title":"Build data","text":"

This is data that can be modified by build hooks.

Data Default Description tag The full tag part of the filename (e.g. py3-none-any), defaulting to a cross-platform wheel with the supported major versions of Python based on project metadata infer_tag False When tag is not set, this may be enabled to use the one most specific to the platform, Python interpreter, and ABI pure_python True Whether or not to write metadata indicating that the package does not contain any platform-specific files dependencies Extra project dependencies extra_metadata Additional extra-metadata entries, which take precedence in case of conflicts force_include_editable Similar to the force_include option but specifically for the editable version and takes precedence"},{"location":"plugins/environment/reference/","title":"Environment plugins","text":"

See the documentation for environment configuration.

"},{"location":"plugins/environment/reference/#known-third-party","title":"Known third-party","text":""},{"location":"plugins/environment/reference/#installation","title":"Installation","text":"

Any required environment types that are not built-in must be manually installed alongside Hatch or listed in the tool.hatch.env.requires array for automatic management:

pyproject.toml hatch.toml 
[tool.hatch.env]\nrequires = [\n  \"...\",\n]\n
[env]\nrequires = [\n  \"...\",\n]\n
"},{"location":"plugins/environment/reference/#life-cycle","title":"Life cycle","text":"

Whenever an environment is used, the following logic is performed:

Source code in src/hatch/cli/application.py 
def prepare_environment(self, environment: EnvironmentInterface):\n    if not environment.exists():\n        self.env_metadata.reset(environment)\n\n        with self.status(f'Creating environment: {environment.name}'):\n            environment.create()\n\n        if not environment.skip_install:\n            if environment.pre_install_commands:\n                with self.status('Running pre-installation commands'):\n                    self.run_shell_commands(environment, environment.pre_install_commands, source='pre-install')\n\n            if environment.dev_mode:\n                with self.status('Installing project in development mode'):\n                    environment.install_project_dev_mode()\n            else:\n                with self.status('Installing project'):\n                    environment.install_project()\n\n            if environment.post_install_commands:\n                with self.status('Running post-installation commands'):\n                    self.run_shell_commands(environment, environment.post_install_commands, source='post-install')\n\n    new_dep_hash = environment.dependency_hash()\n    current_dep_hash = self.env_metadata.dependency_hash(environment)\n    if new_dep_hash != current_dep_hash:\n        with self.status('Checking dependencies'):\n            dependencies_in_sync = environment.dependencies_in_sync()\n\n        if not dependencies_in_sync:\n            with self.status('Syncing dependencies'):\n                environment.sync_dependencies()\n                new_dep_hash = environment.dependency_hash()\n\n        self.env_metadata.update_dependency_hash(environment, new_dep_hash)\n
"},{"location":"plugins/environment/reference/#build-environments","title":"Build environments","text":"

All environment types should offer support for a special sub-environment in which projects can be built. This environment is used in the following scenarios:

"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface","title":"EnvironmentInterface","text":"

Example usage:

plugin.py hooks.py 
    from hatch.env.plugin.interface import EnvironmentInterface\n\n\n    class SpecialEnvironment(EnvironmentInterface):\n        PLUGIN_NAME = 'special'\n        ...\n
    from hatchling.plugin import hookimpl\n\n    from .plugin import SpecialEnvironment\n\n\n    @hookimpl\n    def hatch_register_environment():\n        return SpecialEnvironment\n
Source code in src/hatch/env/plugin/interface.py 
class EnvironmentInterface(ABC):\n    \"\"\"\n    Example usage:\n\n    ```python tab=\"plugin.py\"\n        from hatch.env.plugin.interface import EnvironmentInterface\n\n\n        class SpecialEnvironment(EnvironmentInterface):\n            PLUGIN_NAME = 'special'\n            ...\n    ```\n\n    ```python tab=\"hooks.py\"\n        from hatchling.plugin import hookimpl\n\n        from .plugin import SpecialEnvironment\n\n\n        @hookimpl\n        def hatch_register_environment():\n            return SpecialEnvironment\n    ```\n    \"\"\"\n\n    PLUGIN_NAME = ''\n    \"\"\"The name used for selection.\"\"\"\n\n    def __init__(\n        self,\n        root,\n        metadata,\n        name,\n        config,\n        matrix_variables,\n        data_directory,\n        isolated_data_directory,\n        platform,\n        verbosity,\n        app=None,\n    ):\n        self.__root = root\n        self.__metadata = metadata\n        self.__name = name\n        self.__config = config\n        self.__matrix_variables = matrix_variables\n        self.__data_directory = data_directory\n        self.__isolated_data_directory = isolated_data_directory\n        self.__platform = platform\n        self.__verbosity = verbosity\n        self.__app = app\n        self.__context = None\n\n        self._system_python = None\n        self._env_vars = None\n        self._env_include = None\n        self._env_exclude = None\n        self._environment_dependencies_complex = None\n        self._environment_dependencies = None\n        self._dependencies_complex = None\n        self._dependencies = None\n        self._platforms = None\n        self._skip_install = None\n        self._dev_mode = None\n        self._features = None\n        self._description = None\n        self._scripts = None\n        self._pre_install_commands = None\n        self._post_install_commands = None\n\n    @property\n    def matrix_variables(self):\n        return self.__matrix_variables\n\n    @property\n    def app(self):\n        \"\"\"\n        An instance of [Application](../utilities.md#hatchling.bridge.app.Application).\n        \"\"\"\n        if self.__app is None:\n            from hatchling.bridge.app import Application\n\n            self.__app = Application().get_safe_application()\n\n        return self.__app\n\n    @property\n    def context(self):\n        if self.__context is None:\n            self.__context = self.get_context()\n\n        return self.__context\n\n    @property\n    def verbosity(self):\n        return self.__verbosity\n\n    @property\n    def root(self):\n        \"\"\"\n        The root of the project tree as a path-like object.\n        \"\"\"\n        return self.__root\n\n    @property\n    def metadata(self):\n        return self.__metadata\n\n    @property\n    def name(self) -> str:\n        \"\"\"\n        The name of the environment.\n        \"\"\"\n        return self.__name\n\n    @property\n    def platform(self):\n        \"\"\"\n        An instance of [Platform](../utilities.md#hatch.utils.platform.Platform).\n        \"\"\"\n        return self.__platform\n\n    @property\n    def data_directory(self):\n        \"\"\"\n        The [directory](../../config/hatch.md#environments) this plugin should use for storage as a path-like object.\n        If the user has not configured one then this will be the same as the\n        [isolated data directory](reference.md#hatch.env.plugin.interface.EnvironmentInterface.isolated_data_directory).\n        \"\"\"\n        return self.__data_directory\n\n    @property\n    def isolated_data_directory(self):\n        \"\"\"\n        The default [directory](../../config/hatch.md#environments) reserved exclusively for this plugin as a path-like\n        object.\n        \"\"\"\n        return self.__isolated_data_directory\n\n    @property\n    def config(self) -> dict:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.envs.<ENV_NAME>]\n        ```\n        \"\"\"\n        return self.__config\n\n    @property\n    def system_python(self):\n        if self._system_python is None:\n            system_python = os.environ.get(AppEnvVars.PYTHON)\n            if system_python == 'self':\n                system_python = sys.executable\n\n            system_python = (\n                system_python\n                or self.platform.modules.shutil.which('python')\n                or self.platform.modules.shutil.which('python3')\n                or sys.executable\n            )\n            if not isabs(system_python):\n                system_python = self.platform.modules.shutil.which(system_python)\n\n            self._system_python = system_python\n\n        return self._system_python\n\n    @property\n    def env_vars(self) -> dict:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.envs.<ENV_NAME>.env-vars]\n        ```\n        \"\"\"\n        if self._env_vars is None:\n            env_vars = self.config.get('env-vars', {})\n            if not isinstance(env_vars, dict):\n                message = f'Field `tool.hatch.envs.{self.name}.env-vars` must be a mapping'\n                raise TypeError(message)\n\n            for key, value in env_vars.items():\n                if not isinstance(value, str):\n                    message = (\n                        f'Environment variable `{key}` of field `tool.hatch.envs.{self.name}.env-vars` must be a string'\n                    )\n                    raise TypeError(message)\n\n            new_env_vars = {}\n            with self.metadata.context.apply_context(self.context):\n                for key, value in env_vars.items():\n                    new_env_vars[key] = self.metadata.context.format(value)\n\n            new_env_vars[AppEnvVars.ENV_ACTIVE] = self.name\n            self._env_vars = new_env_vars\n\n        return self._env_vars\n\n    @property\n    def env_include(self) -> list[str]:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.envs.<ENV_NAME>]\n        env-include = [...]\n        ```\n        \"\"\"\n        if self._env_include is None:\n            env_include = self.config.get('env-include', [])\n            if not isinstance(env_include, list):\n                message = f'Field `tool.hatch.envs.{self.name}.env-include` must be an array'\n                raise TypeError(message)\n\n            for i, pattern in enumerate(env_include, 1):\n                if not isinstance(pattern, str):\n                    message = f'Pattern #{i} of field `tool.hatch.envs.{self.name}.env-include` must be a string'\n                    raise TypeError(message)\n\n            if env_include:\n                self._env_include = ['HATCH_BUILD_*', *env_include]\n            else:\n                self._env_include = env_include\n\n        return self._env_include\n\n    @property\n    def env_exclude(self) -> list[str]:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.envs.<ENV_NAME>]\n        env-exclude = [...]\n        ```\n        \"\"\"\n        if self._env_exclude is None:\n            env_exclude = self.config.get('env-exclude', [])\n            if not isinstance(env_exclude, list):\n                message = f'Field `tool.hatch.envs.{self.name}.env-exclude` must be an array'\n                raise TypeError(message)\n\n            for i, pattern in enumerate(env_exclude, 1):\n                if not isinstance(pattern, str):\n                    message = f'Pattern #{i} of field `tool.hatch.envs.{self.name}.env-exclude` must be a string'\n                    raise TypeError(message)\n\n            self._env_exclude = env_exclude\n\n        return self._env_exclude\n\n    @property\n    def environment_dependencies_complex(self):\n        if self._environment_dependencies_complex is None:\n            from packaging.requirements import InvalidRequirement, Requirement\n\n            dependencies_complex = []\n            with self.apply_context():\n                for option in ('dependencies', 'extra-dependencies'):\n                    dependencies = self.config.get(option, [])\n                    if not isinstance(dependencies, list):\n                        message = f'Field `tool.hatch.envs.{self.name}.{option}` must be an array'\n                        raise TypeError(message)\n\n                    for i, entry in enumerate(dependencies, 1):\n                        if not isinstance(entry, str):\n                            message = (\n                                f'Dependency #{i} of field `tool.hatch.envs.{self.name}.{option}` must be a string'\n                            )\n                            raise TypeError(message)\n\n                        try:\n                            dependencies_complex.append(Requirement(self.metadata.context.format(entry)))\n                        except InvalidRequirement as e:\n                            message = f'Dependency #{i} of field `tool.hatch.envs.{self.name}.{option}` is invalid: {e}'\n                            raise ValueError(message) from None\n\n            self._environment_dependencies_complex = dependencies_complex\n\n        return self._environment_dependencies_complex\n\n    @property\n    def environment_dependencies(self) -> list[str]:\n        \"\"\"\n        The list of all [environment dependencies](../../config/environment/overview.md#dependencies).\n        \"\"\"\n        if self._environment_dependencies is None:\n            self._environment_dependencies = [str(dependency) for dependency in self.environment_dependencies_complex]\n\n        return self._environment_dependencies\n\n    @property\n    def dependencies_complex(self):\n        if self._dependencies_complex is None:\n            all_dependencies_complex = list(self.environment_dependencies_complex)\n\n            # Ensure these are checked last to speed up initial environment creation since\n            # they will already be installed along with the project\n            if (not self.skip_install and self.dev_mode) or self.features:\n                from hatch.utils.dep import get_project_dependencies_complex\n\n                dependencies_complex, optional_dependencies_complex = get_project_dependencies_complex(self)\n\n                if not self.skip_install and self.dev_mode:\n                    all_dependencies_complex.extend(dependencies_complex.values())\n\n                for feature in self.features:\n                    if feature not in optional_dependencies_complex:\n                        message = (\n                            f'Feature `{feature}` of field `tool.hatch.envs.{self.name}.features` is not '\n                            f'defined in the dynamic field `project.optional-dependencies`'\n                        )\n                        raise ValueError(message)\n\n                    all_dependencies_complex.extend(optional_dependencies_complex[feature].values())\n\n            self._dependencies_complex = all_dependencies_complex\n\n        return self._dependencies_complex\n\n    @property\n    def dependencies(self) -> list[str]:\n        \"\"\"\n        The list of all [project dependencies](../../config/metadata.md#dependencies) (if\n        [installed](../../config/environment/overview.md#skip-install) and in\n        [dev mode](../../config/environment/overview.md#dev-mode)), selected\n        [optional dependencies](../../config/environment/overview.md#features), and\n        [environment dependencies](../../config/environment/overview.md#dependencies).\n        \"\"\"\n        if self._dependencies is None:\n            self._dependencies = [str(dependency) for dependency in self.dependencies_complex]\n\n        return self._dependencies\n\n    @property\n    def platforms(self) -> list[str]:\n        \"\"\"\n        All names are stored as their lower-cased version.\n\n        ```toml config-example\n        [tool.hatch.envs.<ENV_NAME>]\n        platforms = [...]\n        ```\n        \"\"\"\n        if self._platforms is None:\n            platforms = self.config.get('platforms', [])\n            if not isinstance(platforms, list):\n                message = f'Field `tool.hatch.envs.{self.name}.platforms` must be an array'\n                raise TypeError(message)\n\n            for i, command in enumerate(platforms, 1):\n                if not isinstance(command, str):\n                    message = f'Platform #{i} of field `tool.hatch.envs.{self.name}.platforms` must be a string'\n                    raise TypeError(message)\n\n            self._platforms = [platform.lower() for platform in platforms]\n\n        return self._platforms\n\n    @property\n    def skip_install(self) -> bool:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.envs.<ENV_NAME>]\n        skip-install = ...\n        ```\n        \"\"\"\n        if self._skip_install is None:\n            skip_install = self.config.get('skip-install', not self.metadata.has_project_file())\n            if not isinstance(skip_install, bool):\n                message = f'Field `tool.hatch.envs.{self.name}.skip-install` must be a boolean'\n                raise TypeError(message)\n\n            self._skip_install = skip_install\n\n        return self._skip_install\n\n    @property\n    def dev_mode(self) -> bool:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.envs.<ENV_NAME>]\n        dev-mode = ...\n        ```\n        \"\"\"\n        if self._dev_mode is None:\n            dev_mode = self.config.get('dev-mode', True)\n            if not isinstance(dev_mode, bool):\n                message = f'Field `tool.hatch.envs.{self.name}.dev-mode` must be a boolean'\n                raise TypeError(message)\n\n            self._dev_mode = dev_mode\n\n        return self._dev_mode\n\n    @property\n    def features(self):\n        if self._features is None:\n            from hatchling.metadata.utils import normalize_project_name\n\n            features = self.config.get('features', [])\n            if not isinstance(features, list):\n                message = f'Field `tool.hatch.envs.{self.name}.features` must be an array of strings'\n                raise TypeError(message)\n\n            all_features = set()\n            for i, feature in enumerate(features, 1):\n                if not isinstance(feature, str):\n                    message = f'Feature #{i} of field `tool.hatch.envs.{self.name}.features` must be a string'\n                    raise TypeError(message)\n\n                if not feature:\n                    message = f'Feature #{i} of field `tool.hatch.envs.{self.name}.features` cannot be an empty string'\n                    raise ValueError(message)\n\n                normalized_feature = (\n                    feature\n                    if self.metadata.hatch.metadata.allow_ambiguous_features\n                    else normalize_project_name(feature)\n                )\n                if (\n                    not self.metadata.hatch.metadata.hook_config\n                    and normalized_feature not in self.metadata.core.optional_dependencies\n                ):\n                    message = (\n                        f'Feature `{normalized_feature}` of field `tool.hatch.envs.{self.name}.features` is not '\n                        f'defined in field `project.optional-dependencies`'\n                    )\n                    raise ValueError(message)\n\n                all_features.add(normalized_feature)\n\n            self._features = sorted(all_features)\n\n        return self._features\n\n    @property\n    def description(self) -> str:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.envs.<ENV_NAME>]\n        description = ...\n        ```\n        \"\"\"\n        if self._description is None:\n            description = self.config.get('description', '')\n            if not isinstance(description, str):\n                message = f'Field `tool.hatch.envs.{self.name}.description` must be a string'\n                raise TypeError(message)\n\n            self._description = description\n\n        return self._description\n\n    @property\n    def scripts(self):\n        if self._scripts is None:\n            script_config = self.config.get('scripts', {})\n            if not isinstance(script_config, dict):\n                message = f'Field `tool.hatch.envs.{self.name}.scripts` must be a table'\n                raise TypeError(message)\n\n            config = {}\n\n            for name, data in script_config.items():\n                if ' ' in name:\n                    message = (\n                        f'Script name `{name}` in field `tool.hatch.envs.{self.name}.scripts` must not contain spaces'\n                    )\n                    raise ValueError(message)\n\n                commands = []\n\n                if isinstance(data, str):\n                    commands.append(data)\n                elif isinstance(data, list):\n                    for i, command in enumerate(data, 1):\n                        if not isinstance(command, str):\n                            message = (\n                                f'Command #{i} in field `tool.hatch.envs.{self.name}.scripts.{name}` must be a string'\n                            )\n                            raise TypeError(message)\n\n                        commands.append(command)\n                else:\n                    message = (\n                        f'Field `tool.hatch.envs.{self.name}.scripts.{name}` must be a string or an array of strings'\n                    )\n                    raise TypeError(message)\n\n                config[name] = commands\n\n            seen = {}\n            active = []\n            for script_name, commands in config.items():\n                commands[:] = expand_script_commands(self.name, script_name, commands, config, seen, active)\n\n            self._scripts = config\n\n        return self._scripts\n\n    @property\n    def pre_install_commands(self):\n        if self._pre_install_commands is None:\n            pre_install_commands = self.config.get('pre-install-commands', [])\n            if not isinstance(pre_install_commands, list):\n                message = f'Field `tool.hatch.envs.{self.name}.pre-install-commands` must be an array'\n                raise TypeError(message)\n\n            for i, command in enumerate(pre_install_commands, 1):\n                if not isinstance(command, str):\n                    message = (\n                        f'Command #{i} of field `tool.hatch.envs.{self.name}.pre-install-commands` must be a string'\n                    )\n                    raise TypeError(message)\n\n            self._pre_install_commands = list(pre_install_commands)\n\n        return self._pre_install_commands\n\n    @property\n    def post_install_commands(self):\n        if self._post_install_commands is None:\n            post_install_commands = self.config.get('post-install-commands', [])\n            if not isinstance(post_install_commands, list):\n                message = f'Field `tool.hatch.envs.{self.name}.post-install-commands` must be an array'\n                raise TypeError(message)\n\n            for i, command in enumerate(post_install_commands, 1):\n                if not isinstance(command, str):\n                    message = (\n                        f'Command #{i} of field `tool.hatch.envs.{self.name}.post-install-commands` must be a string'\n                    )\n                    raise TypeError(message)\n\n            self._post_install_commands = list(post_install_commands)\n\n        return self._post_install_commands\n\n    def activate(self):\n        \"\"\"\n        A convenience method called when using the environment as a context manager:\n\n        ```python\n        with environment: ...\n        ```\n        \"\"\"\n\n    def deactivate(self):\n        \"\"\"\n        A convenience method called after using the environment as a context manager:\n\n        ```python\n        with environment: ...\n        ```\n        \"\"\"\n\n    @abstractmethod\n    def find(self):\n        \"\"\"\n        :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n        This should return information about how to locate the environment or represent its ID in\n        some way. Additionally, this is expected to return something even if the environment is\n        [incompatible](reference.md#hatch.env.plugin.interface.EnvironmentInterface.check_compatibility).\n        \"\"\"\n\n    @abstractmethod\n    def create(self):\n        \"\"\"\n        :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n        This should perform the necessary steps to set up the environment.\n        \"\"\"\n\n    @abstractmethod\n    def remove(self):\n        \"\"\"\n        :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n        This should perform the necessary steps to completely remove the environment from the system and will only\n        be triggered manually by users with the [`env remove`](../../cli/reference.md#hatch-env-remove) or\n        [`env prune`](../../cli/reference.md#hatch-env-prune) commands.\n\n        If the\n        [build environment](reference.md#hatch.env.plugin.interface.EnvironmentInterface.build_environment)\n        has a caching mechanism, this should remove that as well.\n        \"\"\"\n\n    @abstractmethod\n    def exists(self) -> bool:\n        \"\"\"\n        :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n        This should indicate whether or not the environment has already been created.\n        \"\"\"\n\n    @abstractmethod\n    def install_project(self):\n        \"\"\"\n        :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n        This should install the project in the environment.\n        \"\"\"\n\n    @abstractmethod\n    def install_project_dev_mode(self):\n        \"\"\"\n        :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n        This should install the project in the environment such that the environment\n        always reflects the current state of the project.\n        \"\"\"\n\n    @abstractmethod\n    def dependencies_in_sync(self) -> bool:\n        \"\"\"\n        :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n        This should indicate whether or not the environment is compatible with the current\n        [dependencies](reference.md#hatch.env.plugin.interface.EnvironmentInterface.dependencies).\n        \"\"\"\n\n    @abstractmethod\n    def sync_dependencies(self):\n        \"\"\"\n        :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n        This should install the\n        [dependencies](reference.md#hatch.env.plugin.interface.EnvironmentInterface.dependencies)\n        in the environment.\n        \"\"\"\n\n    def dependency_hash(self):\n        \"\"\"\n        This should return a hash of the environment's\n        [dependencies](reference.md#hatch.env.plugin.interface.EnvironmentInterface.dependencies)\n        and any other data that is handled by the\n        [sync_dependencies](reference.md#hatch.env.plugin.interface.EnvironmentInterface.sync_dependencies)\n        and\n        [dependencies_in_sync](reference.md#hatch.env.plugin.interface.EnvironmentInterface.dependencies_in_sync)\n        methods.\n        \"\"\"\n        from hatch.utils.dep import hash_dependencies\n\n        return hash_dependencies(self.dependencies_complex)\n\n    @contextmanager\n    def build_environment(\n        self,\n        dependencies: list[str],  # noqa: ARG002\n    ):\n        \"\"\"\n        This should set up an isolated environment in which to [`build`](../../cli/reference.md#hatch-build) the project\n        given a set of dependencies and must be a context manager:\n\n        ```python\n        with environment.build_environment([...]): ...\n        ```\n\n        The build environment should reflect any\n        [environment variables](reference.md#hatch.env.plugin.interface.EnvironmentInterface.get_env_vars)\n        the user defined either currently or at the time of\n        [creation](reference.md#hatch.env.plugin.interface.EnvironmentInterface.create).\n        \"\"\"\n        with self.get_env_vars():\n            yield\n\n    def run_builder(\n        self,\n        build_environment,  # noqa: ARG002\n        **kwargs,\n    ):\n        \"\"\"\n        This will be called when the\n        [build environment](reference.md#hatch.env.plugin.interface.EnvironmentInterface.build_environment)\n        is active:\n\n        ```python\n        with environment.build_environment([...]) as build_env:\n            process = environment.run_builder(build_env, ...)\n        ```\n\n        This should return the standard library's\n        [subprocess.CompletedProcess](https://docs.python.org/3/library/subprocess.html#subprocess.CompletedProcess).\n        The command is constructed by passing all keyword arguments to\n        [construct_build_command](reference.md#hatch.env.plugin.interface.EnvironmentInterface.construct_build_command).\n\n        For an example, open the default implementation below:\n        \"\"\"\n        return self.platform.run_command(self.construct_build_command(**kwargs))\n\n    def build_environment_exists(self):  # noqa: PLR6301\n        \"\"\"\n        If the\n        [build environment](reference.md#hatch.env.plugin.interface.EnvironmentInterface.build_environment)\n        has a caching mechanism, this should indicate whether or not it has already been created.\n        \"\"\"\n        return False\n\n    def enter_shell(\n        self,\n        name: str,  # noqa: ARG002\n        path: str,\n        args: Iterable[str],\n    ):\n        \"\"\"\n        Spawn a [shell](../../config/hatch.md#shell) within the environment.\n\n        This should either use\n        [command_context](reference.md#hatch.env.plugin.interface.EnvironmentInterface.command_context)\n        directly or provide the same guarantee.\n        \"\"\"\n        with self.command_context():\n            self.platform.exit_with_command([path, *args])\n\n    def run_shell_command(self, command: str, **kwargs):\n        \"\"\"\n        This should return the standard library's\n        [subprocess.CompletedProcess](https://docs.python.org/3/library/subprocess.html#subprocess.CompletedProcess)\n        and will always be called when the\n        [command_context](reference.md#hatch.env.plugin.interface.EnvironmentInterface.command_context)\n        is active, with the expectation of providing the same guarantee.\n        \"\"\"\n        kwargs.setdefault('shell', True)\n        return self.platform.run_command(command, **kwargs)\n\n    @contextmanager\n    def command_context(self):\n        \"\"\"\n        A context manager that when active should make executed shell commands reflect any\n        [environment variables](reference.md#hatch.env.plugin.interface.EnvironmentInterface.get_env_vars)\n        the user defined either currently or at the time of\n        [creation](reference.md#hatch.env.plugin.interface.EnvironmentInterface.create).\n\n        For an example, open the default implementation below:\n        \"\"\"\n        with self.get_env_vars():\n            yield\n\n    def resolve_commands(self, commands: list[str]):\n        \"\"\"\n        This expands each command into one or more commands based on any\n        [scripts](../../config/environment/overview.md#scripts) that the user defined.\n        \"\"\"\n        for command in commands:\n            yield from self.expand_command(command)\n\n    def expand_command(self, command):\n        possible_script, args, _ignore_exit_code = parse_script_command(command)\n\n        # Indicate undefined\n        if not args:\n            args = None\n\n        with self.apply_context():\n            if possible_script in self.scripts:\n                for cmd in self.scripts[possible_script]:\n                    yield self.metadata.context.format(cmd, args=args).strip()\n            else:\n                yield self.metadata.context.format(command, args=args).strip()\n\n    def construct_build_command(  # noqa: PLR6301\n        self,\n        *,\n        directory=None,\n        targets=(),\n        hooks_only=False,\n        no_hooks=False,\n        clean=False,\n        clean_hooks_after=False,\n        clean_only=False,\n    ):\n        \"\"\"\n        This is the canonical way [`build`](../../cli/reference.md#hatch-build) command options are translated to\n        a subprocess command issued to [builders](../builder/reference.md).\n        \"\"\"\n        command = ['python', '-u', '-m', 'hatchling', 'build']\n\n        if directory:\n            command.extend(('--directory', directory))\n\n        if targets:\n            for target in targets:\n                command.extend(('--target', target))\n\n        if hooks_only:\n            command.append('--hooks-only')\n\n        if no_hooks:\n            command.append('--no-hooks')\n\n        if clean:\n            command.append('--clean')\n\n        if clean_hooks_after:\n            command.append('--clean-hooks-after')\n\n        if clean_only:\n            command.append('--clean-only')\n\n        return command\n\n    def construct_pip_install_command(self, args: list[str]):\n        \"\"\"\n        A convenience method for constructing a [`pip install`](https://pip.pypa.io/en/stable/cli/pip_install/)\n        command with the given verbosity. The default verbosity is set to one less than Hatch's verbosity.\n        \"\"\"\n        command = ['python', '-u', '-m', 'pip', 'install', '--disable-pip-version-check', '--no-python-version-warning']\n\n        # Default to -1 verbosity\n        add_verbosity_flag(command, self.verbosity, adjustment=-1)\n\n        command.extend(args)\n        return command\n\n    def join_command_args(self, args: list[str]):\n        \"\"\"\n        This is used by the [`run`](../../cli/reference.md#hatch-run) command to construct the root command string\n        from the received arguments.\n        \"\"\"\n        return self.platform.join_command_args(args)\n\n    def apply_features(self, requirement: str):\n        \"\"\"\n        A convenience method that applies any user defined [features](../../config/environment/overview.md#features)\n        to the given requirement.\n        \"\"\"\n        if self.features:\n            features = ','.join(self.features)\n            return f'{requirement}[{features}]'\n\n        return requirement\n\n    def check_compatibility(self):\n        \"\"\"\n        This raises an exception if the environment is not compatible with the user's setup. The default behavior\n        checks for [platform compatibility](../../config/environment/overview.md#supported-platforms)\n        and any method override should keep this check.\n\n        This check is never performed if the environment has been\n        [created](reference.md#hatch.env.plugin.interface.EnvironmentInterface.create).\n        \"\"\"\n        if self.platforms and self.platform.name not in self.platforms:\n            message = 'unsupported platform'\n            raise OSError(message)\n\n    def get_env_vars(self) -> EnvVars:\n        \"\"\"\n        Returns a mapping of environment variables that should be available to the environment. The object can\n        be used as a context manager to temporarily apply the environment variables to the current process.\n\n        !!! note\n            The environment variable `HATCH_ENV_ACTIVE` will always be set to the name of the environment.\n        \"\"\"\n        return EnvVars(self.env_vars, self.env_include, self.env_exclude)\n\n    def get_env_var_option(self, option: str) -> str:\n        \"\"\"\n        Returns the value of the upper-cased environment variable `HATCH_ENV_TYPE_<PLUGIN_NAME>_<option>`.\n        \"\"\"\n        return os.environ.get(f'{AppEnvVars.ENV_OPTION_PREFIX}{self.PLUGIN_NAME}_{option}'.upper(), '')\n\n    def get_context(self):\n        \"\"\"\n        Returns a subclass of\n        [EnvironmentContextFormatter](../utilities.md#hatch.env.context.EnvironmentContextFormatter).\n        \"\"\"\n        from hatch.env.context import EnvironmentContextFormatter\n\n        return EnvironmentContextFormatter(self)\n\n    @staticmethod\n    def get_option_types() -> dict:\n        \"\"\"\n        Returns a mapping of supported options to their respective types so that they can be used by\n        [overrides](../../config/environment/advanced.md#option-overrides).\n        \"\"\"\n        return {}\n\n    @contextmanager\n    def apply_context(self):\n        with self.get_env_vars(), self.metadata.context.apply_context(self.context):\n            yield\n\n    def __enter__(self):\n        self.activate()\n        return self\n\n    def __exit__(self, exc_type, exc_value, traceback):\n        self.deactivate()\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.PLUGIN_NAME","title":"PLUGIN_NAME = '' class-attribute instance-attribute","text":"

The name used for selection.

"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.app","title":"app property","text":"

An instance of Application.

"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.root","title":"root property","text":"

The root of the project tree as a path-like object.

"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.name","title":"name: str property","text":"

The name of the environment.

"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.data_directory","title":"data_directory property","text":"

The directory this plugin should use for storage as a path-like object. If the user has not configured one then this will be the same as the isolated data directory.

"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.isolated_data_directory","title":"isolated_data_directory property","text":"

The default directory reserved exclusively for this plugin as a path-like object.

"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.config","title":"config: dict property","text":"pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\n
[envs.<ENV_NAME>]\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.platform","title":"platform property","text":"

An instance of Platform.

"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.environment_dependencies","title":"environment_dependencies: list[str] property","text":"

The list of all environment dependencies.

"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.dependencies","title":"dependencies: list[str] property","text":"

The list of all project dependencies (if installed and in dev mode), selected optional dependencies, and environment dependencies.

"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.env_vars","title":"env_vars: dict property","text":"pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>.env-vars]\n
[envs.<ENV_NAME>.env-vars]\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.env_include","title":"env_include: list[str] property","text":"pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\nenv-include = [...]\n
[envs.<ENV_NAME>]\nenv-include = [...]\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.env_exclude","title":"env_exclude: list[str] property","text":"pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\nenv-exclude = [...]\n
[envs.<ENV_NAME>]\nenv-exclude = [...]\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.platforms","title":"platforms: list[str] property","text":"

All names are stored as their lower-cased version.

pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\nplatforms = [...]\n
[envs.<ENV_NAME>]\nplatforms = [...]\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.skip_install","title":"skip_install: bool property","text":"pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\nskip-install = ...\n
[envs.<ENV_NAME>]\nskip-install = ...\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.dev_mode","title":"dev_mode: bool property","text":"pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\ndev-mode = ...\n
[envs.<ENV_NAME>]\ndev-mode = ...\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.description","title":"description: str property","text":"pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\ndescription = ...\n
[envs.<ENV_NAME>]\ndescription = ...\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.activate","title":"activate()","text":"

A convenience method called when using the environment as a context manager:

with environment: ...\n
Source code in src/hatch/env/plugin/interface.py 
def activate(self):\n    \"\"\"\n    A convenience method called when using the environment as a context manager:\n\n    ```python\n    with environment: ...\n    ```\n    \"\"\"\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.deactivate","title":"deactivate()","text":"

A convenience method called after using the environment as a context manager:

with environment: ...\n
Source code in src/hatch/env/plugin/interface.py 
def deactivate(self):\n    \"\"\"\n    A convenience method called after using the environment as a context manager:\n\n    ```python\n    with environment: ...\n    ```\n    \"\"\"\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.find","title":"find() abstractmethod","text":"

REQUIRED

This should return information about how to locate the environment or represent its ID in some way. Additionally, this is expected to return something even if the environment is incompatible.

Source code in src/hatch/env/plugin/interface.py 
@abstractmethod\ndef find(self):\n    \"\"\"\n    :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n    This should return information about how to locate the environment or represent its ID in\n    some way. Additionally, this is expected to return something even if the environment is\n    [incompatible](reference.md#hatch.env.plugin.interface.EnvironmentInterface.check_compatibility).\n    \"\"\"\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.create","title":"create() abstractmethod","text":"

REQUIRED

This should perform the necessary steps to set up the environment.

Source code in src/hatch/env/plugin/interface.py 
@abstractmethod\ndef create(self):\n    \"\"\"\n    :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n    This should perform the necessary steps to set up the environment.\n    \"\"\"\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.remove","title":"remove() abstractmethod","text":"

REQUIRED

This should perform the necessary steps to completely remove the environment from the system and will only be triggered manually by users with the env remove or env prune commands.

If the build environment has a caching mechanism, this should remove that as well.

Source code in src/hatch/env/plugin/interface.py 
@abstractmethod\ndef remove(self):\n    \"\"\"\n    :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n    This should perform the necessary steps to completely remove the environment from the system and will only\n    be triggered manually by users with the [`env remove`](../../cli/reference.md#hatch-env-remove) or\n    [`env prune`](../../cli/reference.md#hatch-env-prune) commands.\n\n    If the\n    [build environment](reference.md#hatch.env.plugin.interface.EnvironmentInterface.build_environment)\n    has a caching mechanism, this should remove that as well.\n    \"\"\"\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.exists","title":"exists() -> bool abstractmethod","text":"

REQUIRED

This should indicate whether or not the environment has already been created.

Source code in src/hatch/env/plugin/interface.py 
@abstractmethod\ndef exists(self) -> bool:\n    \"\"\"\n    :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n    This should indicate whether or not the environment has already been created.\n    \"\"\"\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.install_project","title":"install_project() abstractmethod","text":"

REQUIRED

This should install the project in the environment.

Source code in src/hatch/env/plugin/interface.py 
@abstractmethod\ndef install_project(self):\n    \"\"\"\n    :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n    This should install the project in the environment.\n    \"\"\"\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.install_project_dev_mode","title":"install_project_dev_mode() abstractmethod","text":"

REQUIRED

This should install the project in the environment such that the environment always reflects the current state of the project.

Source code in src/hatch/env/plugin/interface.py 
@abstractmethod\ndef install_project_dev_mode(self):\n    \"\"\"\n    :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n    This should install the project in the environment such that the environment\n    always reflects the current state of the project.\n    \"\"\"\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.dependencies_in_sync","title":"dependencies_in_sync() -> bool abstractmethod","text":"

REQUIRED

This should indicate whether or not the environment is compatible with the current dependencies.

Source code in src/hatch/env/plugin/interface.py 
@abstractmethod\ndef dependencies_in_sync(self) -> bool:\n    \"\"\"\n    :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n    This should indicate whether or not the environment is compatible with the current\n    [dependencies](reference.md#hatch.env.plugin.interface.EnvironmentInterface.dependencies).\n    \"\"\"\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.sync_dependencies","title":"sync_dependencies() abstractmethod","text":"

REQUIRED

This should install the dependencies in the environment.

Source code in src/hatch/env/plugin/interface.py 
@abstractmethod\ndef sync_dependencies(self):\n    \"\"\"\n    :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n    This should install the\n    [dependencies](reference.md#hatch.env.plugin.interface.EnvironmentInterface.dependencies)\n    in the environment.\n    \"\"\"\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.dependency_hash","title":"dependency_hash()","text":"

This should return a hash of the environment's dependencies and any other data that is handled by the sync_dependencies and dependencies_in_sync methods.

Source code in src/hatch/env/plugin/interface.py 
def dependency_hash(self):\n    \"\"\"\n    This should return a hash of the environment's\n    [dependencies](reference.md#hatch.env.plugin.interface.EnvironmentInterface.dependencies)\n    and any other data that is handled by the\n    [sync_dependencies](reference.md#hatch.env.plugin.interface.EnvironmentInterface.sync_dependencies)\n    and\n    [dependencies_in_sync](reference.md#hatch.env.plugin.interface.EnvironmentInterface.dependencies_in_sync)\n    methods.\n    \"\"\"\n    from hatch.utils.dep import hash_dependencies\n\n    return hash_dependencies(self.dependencies_complex)\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.build_environment","title":"build_environment(dependencies: list[str])","text":"

This should set up an isolated environment in which to build the project given a set of dependencies and must be a context manager:

with environment.build_environment([...]): ...\n

The build environment should reflect any environment variables the user defined either currently or at the time of creation.

Source code in src/hatch/env/plugin/interface.py 
@contextmanager\ndef build_environment(\n    self,\n    dependencies: list[str],  # noqa: ARG002\n):\n    \"\"\"\n    This should set up an isolated environment in which to [`build`](../../cli/reference.md#hatch-build) the project\n    given a set of dependencies and must be a context manager:\n\n    ```python\n    with environment.build_environment([...]): ...\n    ```\n\n    The build environment should reflect any\n    [environment variables](reference.md#hatch.env.plugin.interface.EnvironmentInterface.get_env_vars)\n    the user defined either currently or at the time of\n    [creation](reference.md#hatch.env.plugin.interface.EnvironmentInterface.create).\n    \"\"\"\n    with self.get_env_vars():\n        yield\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.build_environment_exists","title":"build_environment_exists()","text":"

If the build environment has a caching mechanism, this should indicate whether or not it has already been created.

Source code in src/hatch/env/plugin/interface.py 
def build_environment_exists(self):  # noqa: PLR6301\n    \"\"\"\n    If the\n    [build environment](reference.md#hatch.env.plugin.interface.EnvironmentInterface.build_environment)\n    has a caching mechanism, this should indicate whether or not it has already been created.\n    \"\"\"\n    return False\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.run_builder","title":"run_builder(build_environment, **kwargs)","text":"

This will be called when the build environment is active:

with environment.build_environment([...]) as build_env:\n    process = environment.run_builder(build_env, ...)\n

This should return the standard library's subprocess.CompletedProcess. The command is constructed by passing all keyword arguments to construct_build_command.

For an example, open the default implementation below:

Source code in src/hatch/env/plugin/interface.py 
def run_builder(\n    self,\n    build_environment,  # noqa: ARG002\n    **kwargs,\n):\n    \"\"\"\n    This will be called when the\n    [build environment](reference.md#hatch.env.plugin.interface.EnvironmentInterface.build_environment)\n    is active:\n\n    ```python\n    with environment.build_environment([...]) as build_env:\n        process = environment.run_builder(build_env, ...)\n    ```\n\n    This should return the standard library's\n    [subprocess.CompletedProcess](https://docs.python.org/3/library/subprocess.html#subprocess.CompletedProcess).\n    The command is constructed by passing all keyword arguments to\n    [construct_build_command](reference.md#hatch.env.plugin.interface.EnvironmentInterface.construct_build_command).\n\n    For an example, open the default implementation below:\n    \"\"\"\n    return self.platform.run_command(self.construct_build_command(**kwargs))\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.construct_build_command","title":"construct_build_command(*, directory=None, targets=(), hooks_only=False, no_hooks=False, clean=False, clean_hooks_after=False, clean_only=False)","text":"

This is the canonical way build command options are translated to a subprocess command issued to builders.

Source code in src/hatch/env/plugin/interface.py 
def construct_build_command(  # noqa: PLR6301\n    self,\n    *,\n    directory=None,\n    targets=(),\n    hooks_only=False,\n    no_hooks=False,\n    clean=False,\n    clean_hooks_after=False,\n    clean_only=False,\n):\n    \"\"\"\n    This is the canonical way [`build`](../../cli/reference.md#hatch-build) command options are translated to\n    a subprocess command issued to [builders](../builder/reference.md).\n    \"\"\"\n    command = ['python', '-u', '-m', 'hatchling', 'build']\n\n    if directory:\n        command.extend(('--directory', directory))\n\n    if targets:\n        for target in targets:\n            command.extend(('--target', target))\n\n    if hooks_only:\n        command.append('--hooks-only')\n\n    if no_hooks:\n        command.append('--no-hooks')\n\n    if clean:\n        command.append('--clean')\n\n    if clean_hooks_after:\n        command.append('--clean-hooks-after')\n\n    if clean_only:\n        command.append('--clean-only')\n\n    return command\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.command_context","title":"command_context()","text":"

A context manager that when active should make executed shell commands reflect any environment variables the user defined either currently or at the time of creation.

For an example, open the default implementation below:

Source code in src/hatch/env/plugin/interface.py 
@contextmanager\ndef command_context(self):\n    \"\"\"\n    A context manager that when active should make executed shell commands reflect any\n    [environment variables](reference.md#hatch.env.plugin.interface.EnvironmentInterface.get_env_vars)\n    the user defined either currently or at the time of\n    [creation](reference.md#hatch.env.plugin.interface.EnvironmentInterface.create).\n\n    For an example, open the default implementation below:\n    \"\"\"\n    with self.get_env_vars():\n        yield\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.enter_shell","title":"enter_shell(name: str, path: str, args: Iterable[str])","text":"

Spawn a shell within the environment.

This should either use command_context directly or provide the same guarantee.

Source code in src/hatch/env/plugin/interface.py 
def enter_shell(\n    self,\n    name: str,  # noqa: ARG002\n    path: str,\n    args: Iterable[str],\n):\n    \"\"\"\n    Spawn a [shell](../../config/hatch.md#shell) within the environment.\n\n    This should either use\n    [command_context](reference.md#hatch.env.plugin.interface.EnvironmentInterface.command_context)\n    directly or provide the same guarantee.\n    \"\"\"\n    with self.command_context():\n        self.platform.exit_with_command([path, *args])\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.run_shell_command","title":"run_shell_command(command: str, **kwargs)","text":"

This should return the standard library's subprocess.CompletedProcess and will always be called when the command_context is active, with the expectation of providing the same guarantee.

Source code in src/hatch/env/plugin/interface.py 
def run_shell_command(self, command: str, **kwargs):\n    \"\"\"\n    This should return the standard library's\n    [subprocess.CompletedProcess](https://docs.python.org/3/library/subprocess.html#subprocess.CompletedProcess)\n    and will always be called when the\n    [command_context](reference.md#hatch.env.plugin.interface.EnvironmentInterface.command_context)\n    is active, with the expectation of providing the same guarantee.\n    \"\"\"\n    kwargs.setdefault('shell', True)\n    return self.platform.run_command(command, **kwargs)\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.resolve_commands","title":"resolve_commands(commands: list[str])","text":"

This expands each command into one or more commands based on any scripts that the user defined.

Source code in src/hatch/env/plugin/interface.py 
def resolve_commands(self, commands: list[str]):\n    \"\"\"\n    This expands each command into one or more commands based on any\n    [scripts](../../config/environment/overview.md#scripts) that the user defined.\n    \"\"\"\n    for command in commands:\n        yield from self.expand_command(command)\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.get_env_vars","title":"get_env_vars() -> EnvVars","text":"

Returns a mapping of environment variables that should be available to the environment. The object can be used as a context manager to temporarily apply the environment variables to the current process.

Note

The environment variable HATCH_ENV_ACTIVE will always be set to the name of the environment.

Source code in src/hatch/env/plugin/interface.py 
def get_env_vars(self) -> EnvVars:\n    \"\"\"\n    Returns a mapping of environment variables that should be available to the environment. The object can\n    be used as a context manager to temporarily apply the environment variables to the current process.\n\n    !!! note\n        The environment variable `HATCH_ENV_ACTIVE` will always be set to the name of the environment.\n    \"\"\"\n    return EnvVars(self.env_vars, self.env_include, self.env_exclude)\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.apply_features","title":"apply_features(requirement: str)","text":"

A convenience method that applies any user defined features to the given requirement.

Source code in src/hatch/env/plugin/interface.py 
def apply_features(self, requirement: str):\n    \"\"\"\n    A convenience method that applies any user defined [features](../../config/environment/overview.md#features)\n    to the given requirement.\n    \"\"\"\n    if self.features:\n        features = ','.join(self.features)\n        return f'{requirement}[{features}]'\n\n    return requirement\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.construct_pip_install_command","title":"construct_pip_install_command(args: list[str])","text":"

A convenience method for constructing a pip install command with the given verbosity. The default verbosity is set to one less than Hatch's verbosity.

Source code in src/hatch/env/plugin/interface.py 
def construct_pip_install_command(self, args: list[str]):\n    \"\"\"\n    A convenience method for constructing a [`pip install`](https://pip.pypa.io/en/stable/cli/pip_install/)\n    command with the given verbosity. The default verbosity is set to one less than Hatch's verbosity.\n    \"\"\"\n    command = ['python', '-u', '-m', 'pip', 'install', '--disable-pip-version-check', '--no-python-version-warning']\n\n    # Default to -1 verbosity\n    add_verbosity_flag(command, self.verbosity, adjustment=-1)\n\n    command.extend(args)\n    return command\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.join_command_args","title":"join_command_args(args: list[str])","text":"

This is used by the run command to construct the root command string from the received arguments.

Source code in src/hatch/env/plugin/interface.py 
def join_command_args(self, args: list[str]):\n    \"\"\"\n    This is used by the [`run`](../../cli/reference.md#hatch-run) command to construct the root command string\n    from the received arguments.\n    \"\"\"\n    return self.platform.join_command_args(args)\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.check_compatibility","title":"check_compatibility()","text":"

This raises an exception if the environment is not compatible with the user's setup. The default behavior checks for platform compatibility and any method override should keep this check.

This check is never performed if the environment has been created.

Source code in src/hatch/env/plugin/interface.py 
def check_compatibility(self):\n    \"\"\"\n    This raises an exception if the environment is not compatible with the user's setup. The default behavior\n    checks for [platform compatibility](../../config/environment/overview.md#supported-platforms)\n    and any method override should keep this check.\n\n    This check is never performed if the environment has been\n    [created](reference.md#hatch.env.plugin.interface.EnvironmentInterface.create).\n    \"\"\"\n    if self.platforms and self.platform.name not in self.platforms:\n        message = 'unsupported platform'\n        raise OSError(message)\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.get_option_types","title":"get_option_types() -> dict staticmethod","text":"

Returns a mapping of supported options to their respective types so that they can be used by overrides.

Source code in src/hatch/env/plugin/interface.py 
@staticmethod\ndef get_option_types() -> dict:\n    \"\"\"\n    Returns a mapping of supported options to their respective types so that they can be used by\n    [overrides](../../config/environment/advanced.md#option-overrides).\n    \"\"\"\n    return {}\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.get_env_var_option","title":"get_env_var_option(option: str) -> str","text":"

Returns the value of the upper-cased environment variable HATCH_ENV_TYPE_<PLUGIN_NAME>_<option>.

Source code in src/hatch/env/plugin/interface.py 
def get_env_var_option(self, option: str) -> str:\n    \"\"\"\n    Returns the value of the upper-cased environment variable `HATCH_ENV_TYPE_<PLUGIN_NAME>_<option>`.\n    \"\"\"\n    return os.environ.get(f'{AppEnvVars.ENV_OPTION_PREFIX}{self.PLUGIN_NAME}_{option}'.upper(), '')\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.get_context","title":"get_context()","text":"

Returns a subclass of EnvironmentContextFormatter.

Source code in src/hatch/env/plugin/interface.py 
def get_context(self):\n    \"\"\"\n    Returns a subclass of\n    [EnvironmentContextFormatter](../utilities.md#hatch.env.context.EnvironmentContextFormatter).\n    \"\"\"\n    from hatch.env.context import EnvironmentContextFormatter\n\n    return EnvironmentContextFormatter(self)\n
"},{"location":"plugins/environment/virtual/","title":"Virtual environment","text":"

This uses virtual environments backed by the standard virtualenv tool.

"},{"location":"plugins/environment/virtual/#configuration","title":"Configuration","text":"

The environment plugin name is virtual.

pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\ntype = \"virtual\"\n
[envs.<ENV_NAME>]\ntype = \"virtual\"\n
"},{"location":"plugins/environment/virtual/#options","title":"Options","text":"Option Default Description python The version of Python to find on your system and subsequently use to create the environment, defaulting to the HATCH_PYTHON environment variable, followed by the normal resolution logic. Setting the HATCH_PYTHON environment variable to self will force the use of the Python executable Hatch is running on. For more information, see the documentation. python-sources ['external', 'internal'] This may be set to an array of strings that are either the literal internal or external. External considers only Python executables that are already on PATH. Internal considers only internally managed Python distributions. path An explicit path to the virtual environment. The path may be absolute or relative to the project root. Any environments that inherit this option will also use this path. The environment variable HATCH_ENV_TYPE_VIRTUAL_PATH may be used, which will take precedence. system-packages false Whether or not to give the virtual environment access to the system site-packages directory"},{"location":"plugins/environment/virtual/#location","title":"Location","text":"

The location of environments is determined in the following heuristic order:

  1. The path option
  2. A directory named after the environment within the configured virtual environment directory if the directory resides somewhere within the project root or if it is set to a .virtualenvs directory within the user's home directory
  3. Otherwise, environments are stored within the configured virtual environment directory in a deeply nested structure in order to support multiple projects

Additionally, when the path option is not used, the name of the directory for the default environment will be the normalized project name to provide a more meaningful default shell prompt.

"},{"location":"plugins/environment/virtual/#python-resolution","title":"Python resolution","text":"

Virtual environments necessarily require a parent installation of Python. The following rules determine how the parent is resolved.

The Python choice is determined by the python option followed by the HATCH_PYTHON environment variable. If the choice is via the environment variable, then resolution stops and that path is used unconditionally.

The resolvers will be based on the python-sources option and all resolved interpreters will ensure compatibility with the project's defined Python support.

If a Python version has been chosen then each resolver will try to find an interpreter that satisfies that version.

If no version has been chosen, then each resolver will try to find a version that matches the version of Python that Hatch is currently running on. If not found then each resolver will try to find the highest compatible version.

Note

Some external Python paths are considered unstable and are ignored during resolution. For example, if Hatch is installed via Homebrew then sys.executable will be ignored because the interpreter could change or be removed at any time.

Note

When resolution finds a match using an internally managed distribution and an update is available, the latest distribution will automatically be downloaded before environment creation.

"},{"location":"plugins/environment/virtual/#internal-distributions","title":"Internal distributions","text":"

The following options are recognized for internal Python resolution.

"},{"location":"plugins/environment/virtual/#cpython","title":"CPython","text":"ID 3.7 3.8 3.9 3.10 3.11 3.12

The source of distributions is the python-build-standalone project.

Some distributions have variants that may be configured with the HATCH_PYTHON_VARIANT_<PLATFORM> environment variable where <PLATFORM> is the uppercase version of one of the following:

Platform Options Linux Windows "},{"location":"plugins/environment/virtual/#pypy","title":"PyPy","text":"ID pypy2.7 pypy3.9 pypy3.10

The source of distributions is the PyPy project.

"},{"location":"plugins/environment/virtual/#troubleshooting","title":"Troubleshooting","text":""},{"location":"plugins/environment/virtual/#macos-sip","title":"macOS SIP","text":"

If you need to set linker environment variables like those starting with DYLD_ or LD_, any executable secured by System Integrity Protection that is invoked when running commands will not see those environment variable modifications as macOS strips those.

Hatch interprets such commands as shell commands but deliberately ignores such paths to protected shells. This workaround suffices for the majority of use cases but there are 2 situations in which it may not:

  1. There are no unprotected sh, bash, zsh, nor fish executables found along PATH.
  2. The desired executable is a project's script, and the location of environments contains spaces or is longer than 1241 characters. In this case pip and other installers will create such an entry point with a shebang pointing to /bin/sh (which is protected) to avoid shebang limitations. Rather than changing the location, you could invoke the script as e.g. python -m pytest (if the project supports that method of invocation by shipping a __main__.py).

  1. The shebang length limit is usually 127 but 3 characters surround the executable path: #!<EXE_PATH>\\n \u21a9

"},{"location":"plugins/environment-collector/custom/","title":"Custom environment collector","text":"

This is a custom class in a given Python file that inherits from the EnvironmentCollectorInterface.

"},{"location":"plugins/environment-collector/custom/#configuration","title":"Configuration","text":"

The environment collector plugin name is custom.

pyproject.toml hatch.toml 
[tool.hatch.env.collectors.custom]\n
[env.collectors.custom]\n
"},{"location":"plugins/environment-collector/custom/#options","title":"Options","text":"Option Default Description path hatch_plugins.py The path of the Python file"},{"location":"plugins/environment-collector/custom/#example","title":"Example","text":"hatch_plugins.py 
    from hatch.env.collectors.plugin.interface import EnvironmentCollectorInterface\n\n\n    class CustomEnvironmentCollector(EnvironmentCollectorInterface):\n        ...\n

If multiple subclasses are found, you must define a function named get_environment_collector that returns the desired environment collector.

Note

Any defined PLUGIN_NAME is ignored and will always be custom.

"},{"location":"plugins/environment-collector/default/","title":"Default environment collector","text":"

This adds the default environment with type set to virtual and will always be applied.

"},{"location":"plugins/environment-collector/default/#configuration","title":"Configuration","text":"

The environment collector plugin name is default.

pyproject.toml hatch.toml 
[tool.hatch.env.collectors.default]\n
[env.collectors.default]\n
"},{"location":"plugins/environment-collector/default/#options","title":"Options","text":"

There are no options available currently.

"},{"location":"plugins/environment-collector/reference/","title":"Environment collector plugins","text":"

Environment collectors allow for dynamically modifying environments or adding environments beyond those defined in config. Users can override default values provided by each environment.

"},{"location":"plugins/environment-collector/reference/#known-third-party","title":"Known third-party","text":""},{"location":"plugins/environment-collector/reference/#installation","title":"Installation","text":"

Any required environment collectors that are not built-in must be manually installed alongside Hatch or listed in the tool.hatch.env.requires array for automatic management:

pyproject.toml hatch.toml 
[tool.hatch.env]\nrequires = [\n  \"...\",\n]\n
[env]\nrequires = [\n  \"...\",\n]\n
"},{"location":"plugins/environment-collector/reference/#hatch.env.collectors.plugin.interface.EnvironmentCollectorInterface","title":"EnvironmentCollectorInterface","text":"

Example usage:

plugin.py hooks.py 
    from hatch.env.collectors.plugin.interface import EnvironmentCollectorInterface\n\n\n    class SpecialEnvironmentCollector(EnvironmentCollectorInterface):\n        PLUGIN_NAME = 'special'\n        ...\n
    from hatchling.plugin import hookimpl\n\n    from .plugin import SpecialEnvironmentCollector\n\n\n    @hookimpl\n    def hatch_register_environment_collector():\n        return SpecialEnvironmentCollector\n
Source code in src/hatch/env/collectors/plugin/interface.py 
class EnvironmentCollectorInterface:\n    \"\"\"\n    Example usage:\n\n    ```python tab=\"plugin.py\"\n        from hatch.env.collectors.plugin.interface import EnvironmentCollectorInterface\n\n\n        class SpecialEnvironmentCollector(EnvironmentCollectorInterface):\n            PLUGIN_NAME = 'special'\n            ...\n    ```\n\n    ```python tab=\"hooks.py\"\n        from hatchling.plugin import hookimpl\n\n        from .plugin import SpecialEnvironmentCollector\n\n\n        @hookimpl\n        def hatch_register_environment_collector():\n            return SpecialEnvironmentCollector\n    ```\n    \"\"\"\n\n    PLUGIN_NAME = ''\n    \"\"\"The name used for selection.\"\"\"\n\n    def __init__(self, root, config):\n        self.__root = root\n        self.__config = config\n\n    @property\n    def root(self):\n        \"\"\"\n        The root of the project tree as a path-like object.\n        \"\"\"\n        return self.__root\n\n    @property\n    def config(self) -> dict:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.env.collectors.<PLUGIN_NAME>]\n        ```\n        \"\"\"\n        return self.__config\n\n    def get_initial_config(self) -> dict[str, dict]:  # noqa: PLR6301\n        \"\"\"\n        Returns configuration for environments keyed by the environment or matrix name.\n        \"\"\"\n        return {}\n\n    def finalize_config(self, config: dict[str, dict]):\n        \"\"\"\n        Finalizes configuration for environments keyed by the environment or matrix name. This will override\n        any user-defined settings and any collectors that ran before this call.\n\n        This is called before matrices are turned into concrete environments.\n        \"\"\"\n\n    def finalize_environments(self, config: dict[str, dict]):\n        \"\"\"\n        Finalizes configuration for environments keyed by the environment name. This will override\n        any user-defined settings and any collectors that ran before this call.\n\n        This is called after matrices are turned into concrete environments.\n        \"\"\"\n
"},{"location":"plugins/environment-collector/reference/#hatch.env.collectors.plugin.interface.EnvironmentCollectorInterface.PLUGIN_NAME","title":"PLUGIN_NAME = '' class-attribute instance-attribute","text":"

The name used for selection.

"},{"location":"plugins/environment-collector/reference/#hatch.env.collectors.plugin.interface.EnvironmentCollectorInterface.root","title":"root property","text":"

The root of the project tree as a path-like object.

"},{"location":"plugins/environment-collector/reference/#hatch.env.collectors.plugin.interface.EnvironmentCollectorInterface.config","title":"config: dict property","text":"pyproject.toml hatch.toml 
[tool.hatch.env.collectors.<PLUGIN_NAME>]\n
[env.collectors.<PLUGIN_NAME>]\n
"},{"location":"plugins/environment-collector/reference/#hatch.env.collectors.plugin.interface.EnvironmentCollectorInterface.get_initial_config","title":"get_initial_config() -> dict[str, dict]","text":"

Returns configuration for environments keyed by the environment or matrix name.

Source code in src/hatch/env/collectors/plugin/interface.py 
def get_initial_config(self) -> dict[str, dict]:  # noqa: PLR6301\n    \"\"\"\n    Returns configuration for environments keyed by the environment or matrix name.\n    \"\"\"\n    return {}\n
"},{"location":"plugins/environment-collector/reference/#hatch.env.collectors.plugin.interface.EnvironmentCollectorInterface.finalize_config","title":"finalize_config(config: dict[str, dict])","text":"

Finalizes configuration for environments keyed by the environment or matrix name. This will override any user-defined settings and any collectors that ran before this call.

This is called before matrices are turned into concrete environments.

Source code in src/hatch/env/collectors/plugin/interface.py 
def finalize_config(self, config: dict[str, dict]):\n    \"\"\"\n    Finalizes configuration for environments keyed by the environment or matrix name. This will override\n    any user-defined settings and any collectors that ran before this call.\n\n    This is called before matrices are turned into concrete environments.\n    \"\"\"\n
"},{"location":"plugins/environment-collector/reference/#hatch.env.collectors.plugin.interface.EnvironmentCollectorInterface.finalize_environments","title":"finalize_environments(config: dict[str, dict])","text":"

Finalizes configuration for environments keyed by the environment name. This will override any user-defined settings and any collectors that ran before this call.

This is called after matrices are turned into concrete environments.

Source code in src/hatch/env/collectors/plugin/interface.py 
def finalize_environments(self, config: dict[str, dict]):\n    \"\"\"\n    Finalizes configuration for environments keyed by the environment name. This will override\n    any user-defined settings and any collectors that ran before this call.\n\n    This is called after matrices are turned into concrete environments.\n    \"\"\"\n
"},{"location":"plugins/metadata-hook/custom/","title":"Custom metadata hook","text":"

This is a custom class in a given Python file that inherits from the MetadataHookInterface.

"},{"location":"plugins/metadata-hook/custom/#configuration","title":"Configuration","text":"

The metadata hook plugin name is custom.

pyproject.toml hatch.toml 
[tool.hatch.metadata.hooks.custom]\n
[metadata.hooks.custom]\n
"},{"location":"plugins/metadata-hook/custom/#options","title":"Options","text":"Option Default Description path hatch_build.py The path of the Python file"},{"location":"plugins/metadata-hook/custom/#example","title":"Example","text":"hatch_build.py 
    from hatchling.metadata.plugin.interface import MetadataHookInterface\n\n\n    class CustomMetadataHook(MetadataHookInterface):\n        ...\n

If multiple subclasses are found, you must define a function named get_metadata_hook that returns the desired build hook.

Note

Any defined PLUGIN_NAME is ignored and will always be custom.

"},{"location":"plugins/metadata-hook/reference/","title":"Metadata hook plugins","text":"

Metadata hooks allow for the modification of project metadata after it has been loaded.

"},{"location":"plugins/metadata-hook/reference/#known-third-party","title":"Known third-party","text":""},{"location":"plugins/metadata-hook/reference/#hatchling.metadata.plugin.interface.MetadataHookInterface","title":"MetadataHookInterface","text":"

Example usage:

plugin.py hooks.py 
from hatchling.metadata.plugin.interface import MetadataHookInterface\n\n\nclass SpecialMetadataHook(MetadataHookInterface):\n    PLUGIN_NAME = 'special'\n    ...\n
from hatchling.plugin import hookimpl\n\nfrom .plugin import SpecialMetadataHook\n\n\n@hookimpl\ndef hatch_register_metadata_hook():\n    return SpecialMetadataHook\n
Source code in backend/src/hatchling/metadata/plugin/interface.py 
class MetadataHookInterface(ABC):  # no cov\n    \"\"\"\n    Example usage:\n\n    ```python tab=\"plugin.py\"\n    from hatchling.metadata.plugin.interface import MetadataHookInterface\n\n\n    class SpecialMetadataHook(MetadataHookInterface):\n        PLUGIN_NAME = 'special'\n        ...\n    ```\n\n    ```python tab=\"hooks.py\"\n    from hatchling.plugin import hookimpl\n\n    from .plugin import SpecialMetadataHook\n\n\n    @hookimpl\n    def hatch_register_metadata_hook():\n        return SpecialMetadataHook\n    ```\n    \"\"\"\n\n    PLUGIN_NAME = ''\n    \"\"\"The name used for selection.\"\"\"\n\n    def __init__(self, root: str, config: dict) -> None:\n        self.__root = root\n        self.__config = config\n\n    @property\n    def root(self) -> str:\n        \"\"\"\n        The root of the project tree.\n        \"\"\"\n        return self.__root\n\n    @property\n    def config(self) -> dict:\n        \"\"\"\n        The hook configuration.\n\n        ```toml config-example\n        [tool.hatch.metadata.hooks.<PLUGIN_NAME>]\n        ```\n        \"\"\"\n        return self.__config\n\n    @abstractmethod\n    def update(self, metadata: dict) -> None:\n        \"\"\"\n        This updates the metadata mapping of the `project` table in-place.\n        \"\"\"\n\n    def get_known_classifiers(self) -> list[str]:  # noqa: PLR6301\n        \"\"\"\n        This returns extra classifiers that should be considered valid in addition to the ones known to PyPI.\n        \"\"\"\n        return []\n
"},{"location":"plugins/metadata-hook/reference/#hatchling.metadata.plugin.interface.MetadataHookInterface.PLUGIN_NAME","title":"PLUGIN_NAME = '' class-attribute instance-attribute","text":"

The name used for selection.

"},{"location":"plugins/metadata-hook/reference/#hatchling.metadata.plugin.interface.MetadataHookInterface.root","title":"root: str property","text":"

The root of the project tree.

"},{"location":"plugins/metadata-hook/reference/#hatchling.metadata.plugin.interface.MetadataHookInterface.config","title":"config: dict property","text":"

The hook configuration.

pyproject.toml hatch.toml 
[tool.hatch.metadata.hooks.<PLUGIN_NAME>]\n
[metadata.hooks.<PLUGIN_NAME>]\n
"},{"location":"plugins/metadata-hook/reference/#hatchling.metadata.plugin.interface.MetadataHookInterface.update","title":"update(metadata: dict) -> None abstractmethod","text":"

This updates the metadata mapping of the project table in-place.

Source code in backend/src/hatchling/metadata/plugin/interface.py 
@abstractmethod\ndef update(self, metadata: dict) -> None:\n    \"\"\"\n    This updates the metadata mapping of the `project` table in-place.\n    \"\"\"\n
"},{"location":"plugins/metadata-hook/reference/#hatchling.metadata.plugin.interface.MetadataHookInterface.get_known_classifiers","title":"get_known_classifiers() -> list[str]","text":"

This returns extra classifiers that should be considered valid in addition to the ones known to PyPI.

Source code in backend/src/hatchling/metadata/plugin/interface.py 
def get_known_classifiers(self) -> list[str]:  # noqa: PLR6301\n    \"\"\"\n    This returns extra classifiers that should be considered valid in addition to the ones known to PyPI.\n    \"\"\"\n    return []\n
"},{"location":"plugins/publisher/package-index/","title":"Index publisher","text":"

See the documentation for publishing.

"},{"location":"plugins/publisher/package-index/#configuration","title":"Configuration","text":"

The publisher plugin name is index.

config.toml 
[publish.index]\n
"},{"location":"plugins/publisher/package-index/#options","title":"Options","text":"Flag Config name Description -r/--repo repo The repository with which to publish artifacts -u/--user user The user with which to authenticate -a/--auth auth The credentials to use for authentication --ca-cert ca-cert The path to a CA bundle --client-cert client-cert The path to a client certificate, optionally containing the private key --client-key client-key The path to the client certificate's private key repos A table of named repositories to their respective options"},{"location":"plugins/publisher/package-index/#repositories","title":"Repositories","text":"

All top-level options can be overridden per repository using the repos table with a required url attribute for each repository. The following shows the default configuration:

config.toml 
[publish.index.repos.main]\nurl = \"https://upload.pypi.org/legacy/\"\n\n[publish.index.repos.test]\nurl = \"https://test.pypi.org/legacy/\"\n

The repo and repos options have no effect.

"},{"location":"plugins/publisher/reference/","title":"Publisher plugins","text":""},{"location":"plugins/publisher/reference/#hatch.publish.plugin.interface.PublisherInterface","title":"PublisherInterface","text":"

Example usage:

plugin.py hooks.py 
    from hatch.publish.plugin.interface import PublisherInterface\n\n\n    class SpecialPublisher(PublisherInterface):\n        PLUGIN_NAME = 'special'\n        ...\n
    from hatchling.plugin import hookimpl\n\n    from .plugin import SpecialPublisher\n\n\n    @hookimpl\n    def hatch_register_publisher():\n        return SpecialPublisher\n
Source code in src/hatch/publish/plugin/interface.py 
class PublisherInterface(ABC):\n    \"\"\"\n    Example usage:\n\n    ```python tab=\"plugin.py\"\n        from hatch.publish.plugin.interface import PublisherInterface\n\n\n        class SpecialPublisher(PublisherInterface):\n            PLUGIN_NAME = 'special'\n            ...\n    ```\n\n    ```python tab=\"hooks.py\"\n        from hatchling.plugin import hookimpl\n\n        from .plugin import SpecialPublisher\n\n\n        @hookimpl\n        def hatch_register_publisher():\n            return SpecialPublisher\n    ```\n    \"\"\"\n\n    PLUGIN_NAME = ''\n    \"\"\"The name used for selection.\"\"\"\n\n    def __init__(self, app, root, cache_dir, project_config, plugin_config):\n        self.__app = app\n        self.__root = root\n        self.__cache_dir = cache_dir\n        self.__project_config = project_config\n        self.__plugin_config = plugin_config\n\n        self.__disable = None\n\n    @property\n    def app(self):\n        \"\"\"\n        An instance of [Application](../utilities.md#hatchling.bridge.app.Application).\n        \"\"\"\n        return self.__app\n\n    @property\n    def root(self):\n        \"\"\"\n        The root of the project tree as a path-like object.\n        \"\"\"\n        return self.__root\n\n    @property\n    def cache_dir(self):\n        \"\"\"\n        The directory reserved exclusively for this plugin as a path-like object.\n        \"\"\"\n        return self.__cache_dir\n\n    @property\n    def project_config(self) -> dict:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.publish.<PLUGIN_NAME>]\n        ```\n        \"\"\"\n        return self.__project_config\n\n    @property\n    def plugin_config(self) -> dict:\n        \"\"\"\n        This is defined in Hatch's [config file](../../config/hatch.md).\n\n        ```toml tab=\"config.toml\"\n        [publish.<PLUGIN_NAME>]\n        ```\n        \"\"\"\n        return self.__plugin_config\n\n    @property\n    def disable(self):\n        \"\"\"\n        Whether this plugin is disabled, thus requiring confirmation when publishing. Local\n        [project configuration](reference.md#hatch.publish.plugin.interface.PublisherInterface.project_config)\n        takes precedence over global\n        [plugin configuration](reference.md#hatch.publish.plugin.interface.PublisherInterface.plugin_config).\n        \"\"\"\n        if self.__disable is None:\n            if 'disable' in self.project_config:\n                disable = self.project_config['disable']\n                if not isinstance(disable, bool):\n                    message = f'Field `tool.hatch.publish.{self.PLUGIN_NAME}.disable` must be a boolean'\n                    raise TypeError(message)\n            else:\n                disable = self.plugin_config.get('disable', False)\n                if not isinstance(disable, bool):\n                    message = f'Global plugin configuration `publish.{self.PLUGIN_NAME}.disable` must be a boolean'\n                    raise TypeError(message)\n\n            self.__disable = disable\n\n        return self.__disable\n\n    @abstractmethod\n    def publish(self, artifacts: list[str], options: dict):\n        \"\"\"\n        :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n        This is called directly by the [`publish`](../../cli/reference.md#hatch-publish) command\n        with the arguments and options it receives.\n        \"\"\"\n
"},{"location":"plugins/publisher/reference/#hatch.publish.plugin.interface.PublisherInterface.PLUGIN_NAME","title":"PLUGIN_NAME = '' class-attribute instance-attribute","text":"

The name used for selection.

"},{"location":"plugins/publisher/reference/#hatch.publish.plugin.interface.PublisherInterface.app","title":"app property","text":"

An instance of Application.

"},{"location":"plugins/publisher/reference/#hatch.publish.plugin.interface.PublisherInterface.root","title":"root property","text":"

The root of the project tree as a path-like object.

"},{"location":"plugins/publisher/reference/#hatch.publish.plugin.interface.PublisherInterface.cache_dir","title":"cache_dir property","text":"

The directory reserved exclusively for this plugin as a path-like object.

"},{"location":"plugins/publisher/reference/#hatch.publish.plugin.interface.PublisherInterface.project_config","title":"project_config: dict property","text":"pyproject.toml hatch.toml 
[tool.hatch.publish.<PLUGIN_NAME>]\n
[publish.<PLUGIN_NAME>]\n
"},{"location":"plugins/publisher/reference/#hatch.publish.plugin.interface.PublisherInterface.plugin_config","title":"plugin_config: dict property","text":"

This is defined in Hatch's config file.

config.toml 
[publish.<PLUGIN_NAME>]\n
"},{"location":"plugins/publisher/reference/#hatch.publish.plugin.interface.PublisherInterface.disable","title":"disable property","text":"

Whether this plugin is disabled, thus requiring confirmation when publishing. Local project configuration takes precedence over global plugin configuration.

"},{"location":"plugins/publisher/reference/#hatch.publish.plugin.interface.PublisherInterface.publish","title":"publish(artifacts: list[str], options: dict) abstractmethod","text":"

REQUIRED

This is called directly by the publish command with the arguments and options it receives.

Source code in src/hatch/publish/plugin/interface.py 
@abstractmethod\ndef publish(self, artifacts: list[str], options: dict):\n    \"\"\"\n    :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n    This is called directly by the [`publish`](../../cli/reference.md#hatch-publish) command\n    with the arguments and options it receives.\n    \"\"\"\n
"},{"location":"plugins/version-scheme/reference/","title":"Version scheme plugins","text":""},{"location":"plugins/version-scheme/reference/#known-third-party","title":"Known third-party","text":""},{"location":"plugins/version-scheme/reference/#hatchling.version.scheme.plugin.interface.VersionSchemeInterface","title":"VersionSchemeInterface","text":"

Example usage:

plugin.py hooks.py 
from hatchling.version.scheme.plugin.interface import VersionSchemeInterface\n\n\nclass SpecialVersionScheme(VersionSchemeInterface):\n    PLUGIN_NAME = 'special'\n    ...\n
from hatchling.plugin import hookimpl\n\nfrom .plugin import SpecialVersionScheme\n\n\n@hookimpl\ndef hatch_register_version_scheme():\n    return SpecialVersionScheme\n
Source code in backend/src/hatchling/version/scheme/plugin/interface.py 
class VersionSchemeInterface(ABC):  # no cov\n    \"\"\"\n    Example usage:\n\n    ```python tab=\"plugin.py\"\n    from hatchling.version.scheme.plugin.interface import VersionSchemeInterface\n\n\n    class SpecialVersionScheme(VersionSchemeInterface):\n        PLUGIN_NAME = 'special'\n        ...\n    ```\n\n    ```python tab=\"hooks.py\"\n    from hatchling.plugin import hookimpl\n\n    from .plugin import SpecialVersionScheme\n\n\n    @hookimpl\n    def hatch_register_version_scheme():\n        return SpecialVersionScheme\n    ```\n    \"\"\"\n\n    PLUGIN_NAME = ''\n    \"\"\"The name used for selection.\"\"\"\n\n    def __init__(self, root: str, config: dict) -> None:\n        self.__root = root\n        self.__config = config\n\n    @property\n    def root(self) -> str:\n        \"\"\"\n        The root of the project tree as a string.\n        \"\"\"\n        return self.__root\n\n    @property\n    def config(self) -> dict:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.version]\n        ```\n        \"\"\"\n        return self.__config\n\n    @abstractmethod\n    def update(self, desired_version: str, original_version: str, version_data: dict) -> str:\n        \"\"\"\n        This should return a normalized form of the desired version and verify that it\n        is higher than the original version.\n        \"\"\"\n
"},{"location":"plugins/version-scheme/reference/#hatchling.version.scheme.plugin.interface.VersionSchemeInterface.PLUGIN_NAME","title":"PLUGIN_NAME = '' class-attribute instance-attribute","text":"

The name used for selection.

"},{"location":"plugins/version-scheme/reference/#hatchling.version.scheme.plugin.interface.VersionSchemeInterface.root","title":"root: str property","text":"

The root of the project tree as a string.

"},{"location":"plugins/version-scheme/reference/#hatchling.version.scheme.plugin.interface.VersionSchemeInterface.config","title":"config: dict property","text":"pyproject.toml hatch.toml 
[tool.hatch.version]\n
[version]\n
"},{"location":"plugins/version-scheme/reference/#hatchling.version.scheme.plugin.interface.VersionSchemeInterface.update","title":"update(desired_version: str, original_version: str, version_data: dict) -> str abstractmethod","text":"

This should return a normalized form of the desired version and verify that it is higher than the original version.

Source code in backend/src/hatchling/version/scheme/plugin/interface.py 
@abstractmethod\ndef update(self, desired_version: str, original_version: str, version_data: dict) -> str:\n    \"\"\"\n    This should return a normalized form of the desired version and verify that it\n    is higher than the original version.\n    \"\"\"\n
"},{"location":"plugins/version-scheme/standard/","title":"Standard version scheme","text":"

See the documentation for versioning.

"},{"location":"plugins/version-scheme/standard/#configuration","title":"Configuration","text":"

The version scheme plugin name is standard.

pyproject.toml hatch.toml 
[tool.hatch.version]\nscheme = \"standard\"\n
[version]\nscheme = \"standard\"\n
"},{"location":"plugins/version-scheme/standard/#options","title":"Options","text":"Option Description validate-bump When setting a specific version, this determines whether to check that the new version is higher than the original. The default is true."},{"location":"plugins/version-source/code/","title":"Code version source","text":""},{"location":"plugins/version-source/code/#updates","title":"Updates","text":"

Setting the version is not supported.

"},{"location":"plugins/version-source/code/#configuration","title":"Configuration","text":"

The version source plugin name is code.

pyproject.toml hatch.toml 
[tool.hatch.version]\nsource = \"code\"\n
[version]\nsource = \"code\"\n
"},{"location":"plugins/version-source/code/#options","title":"Options","text":"Option Description path (required) A relative path to a Python file or extension module that will be loaded expression A Python expression that when evaluated in the context of the loaded file returns the version. The default expression is simply __version__. search-paths A list of relative paths to directories that will be prepended to Python's search path"},{"location":"plugins/version-source/code/#missing-imports","title":"Missing imports","text":"

If the chosen path imports another module in your project, then you'll need to use absolute imports coupled with the search-paths option. For example, say you need to load the following file:

src/pkg/__init__.py 
    from ._version import get_version\n\n    __version__ = get_version()\n

You should change it to:

src/pkg/__init__.py 
    from pkg._version import get_version\n\n    __version__ = get_version()\n

and the configuration would become:

pyproject.toml hatch.toml 
[tool.hatch.version]\nsource = \"code\"\npath = \"src/pkg/__init__.py\"\nsearch-paths = [\"src\"]\n
[version]\nsource = \"code\"\npath = \"src/pkg/__init__.py\"\nsearch-paths = [\"src\"]\n
"},{"location":"plugins/version-source/env/","title":"Environment version source","text":"

Retrieves the version from an environment variable. This can be useful in build pipelines where the version is set by an external trigger.

"},{"location":"plugins/version-source/env/#updates","title":"Updates","text":"

Setting the version is not supported.

"},{"location":"plugins/version-source/env/#configuration","title":"Configuration","text":"

The version source plugin name is env.

pyproject.toml hatch.toml 
[tool.hatch.version]\nsource = \"env\"\n
[version]\nsource = \"env\"\n
"},{"location":"plugins/version-source/env/#options","title":"Options","text":"Option Description variable (required) The name of the environment variable"},{"location":"plugins/version-source/reference/","title":"Version source plugins","text":""},{"location":"plugins/version-source/reference/#known-third-party","title":"Known third-party","text":""},{"location":"plugins/version-source/reference/#hatchling.version.source.plugin.interface.VersionSourceInterface","title":"VersionSourceInterface","text":"

Example usage:

plugin.py hooks.py 
from hatchling.version.source.plugin.interface import VersionSourceInterface\n\n\nclass SpecialVersionSource(VersionSourceInterface):\n    PLUGIN_NAME = 'special'\n    ...\n
from hatchling.plugin import hookimpl\n\nfrom .plugin import SpecialVersionSource\n\n\n@hookimpl\ndef hatch_register_version_source():\n    return SpecialVersionSource\n
Source code in backend/src/hatchling/version/source/plugin/interface.py 
class VersionSourceInterface(ABC):  # no cov\n    \"\"\"\n    Example usage:\n\n    ```python tab=\"plugin.py\"\n    from hatchling.version.source.plugin.interface import VersionSourceInterface\n\n\n    class SpecialVersionSource(VersionSourceInterface):\n        PLUGIN_NAME = 'special'\n        ...\n    ```\n\n    ```python tab=\"hooks.py\"\n    from hatchling.plugin import hookimpl\n\n    from .plugin import SpecialVersionSource\n\n\n    @hookimpl\n    def hatch_register_version_source():\n        return SpecialVersionSource\n    ```\n    \"\"\"\n\n    PLUGIN_NAME = ''\n    \"\"\"The name used for selection.\"\"\"\n\n    def __init__(self, root: str, config: dict) -> None:\n        self.__root = root\n        self.__config = config\n\n    @property\n    def root(self) -> str:\n        \"\"\"\n        The root of the project tree as a string.\n        \"\"\"\n        return self.__root\n\n    @property\n    def config(self) -> dict:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.version]\n        ```\n        \"\"\"\n        return self.__config\n\n    @abstractmethod\n    def get_version_data(self) -> dict:\n        \"\"\"\n        This should return a mapping with a `version` key representing the current version of the project and will be\n        displayed when invoking the [`version`](../../cli/reference.md#hatch-version) command without any arguments.\n\n        The mapping can contain anything else and will be passed to\n        [set_version](reference.md#hatchling.version.source.plugin.interface.VersionSourceInterface.set_version)\n        when updating the version.\n        \"\"\"\n\n    def set_version(self, version: str, version_data: dict) -> None:\n        \"\"\"\n        This should update the version to the first argument with the data provided during retrieval.\n        \"\"\"\n        raise NotImplementedError\n
"},{"location":"plugins/version-source/reference/#hatchling.version.source.plugin.interface.VersionSourceInterface.PLUGIN_NAME","title":"PLUGIN_NAME = '' class-attribute instance-attribute","text":"

The name used for selection.

"},{"location":"plugins/version-source/reference/#hatchling.version.source.plugin.interface.VersionSourceInterface.root","title":"root: str property","text":"

The root of the project tree as a string.

"},{"location":"plugins/version-source/reference/#hatchling.version.source.plugin.interface.VersionSourceInterface.config","title":"config: dict property","text":"pyproject.toml hatch.toml 
[tool.hatch.version]\n
[version]\n
"},{"location":"plugins/version-source/reference/#hatchling.version.source.plugin.interface.VersionSourceInterface.get_version_data","title":"get_version_data() -> dict abstractmethod","text":"

This should return a mapping with a version key representing the current version of the project and will be displayed when invoking the version command without any arguments.

The mapping can contain anything else and will be passed to set_version when updating the version.

Source code in backend/src/hatchling/version/source/plugin/interface.py 
@abstractmethod\ndef get_version_data(self) -> dict:\n    \"\"\"\n    This should return a mapping with a `version` key representing the current version of the project and will be\n    displayed when invoking the [`version`](../../cli/reference.md#hatch-version) command without any arguments.\n\n    The mapping can contain anything else and will be passed to\n    [set_version](reference.md#hatchling.version.source.plugin.interface.VersionSourceInterface.set_version)\n    when updating the version.\n    \"\"\"\n
"},{"location":"plugins/version-source/reference/#hatchling.version.source.plugin.interface.VersionSourceInterface.set_version","title":"set_version(version: str, version_data: dict) -> None","text":"

This should update the version to the first argument with the data provided during retrieval.

Source code in backend/src/hatchling/version/source/plugin/interface.py 
def set_version(self, version: str, version_data: dict) -> None:\n    \"\"\"\n    This should update the version to the first argument with the data provided during retrieval.\n    \"\"\"\n    raise NotImplementedError\n
"},{"location":"plugins/version-source/regex/","title":"Regex version source","text":"

See the documentation for versioning.

"},{"location":"plugins/version-source/regex/#updates","title":"Updates","text":"

Setting the version is supported.

"},{"location":"plugins/version-source/regex/#configuration","title":"Configuration","text":"

The version source plugin name is regex.

pyproject.toml hatch.toml 
[tool.hatch.version]\nsource = \"regex\"\n
[version]\nsource = \"regex\"\n
"},{"location":"plugins/version-source/regex/#options","title":"Options","text":"Option Description path (required) A relative path to a file containing the project's version pattern A regular expression that has a named group called version that represents the version. The default pattern looks for a variable named __version__ or VERSION that is set to a string containing the version, optionally prefixed with the lowercase letter v."},{"location":"blog/archive/2023/","title":"2023","text":""},{"location":"blog/archive/2022/","title":"2022","text":""},{"location":"blog/category/release/","title":"Release","text":""}]} \ No newline at end of file +{"config":{"lang":["en"],"separator":"[\\s\\-]+","pipeline":["stopWordFilter"],"fields":{"title":{"boost":1000.0},"text":{"boost":1.0},"tags":{"boost":1000000.0}}},"docs":[{"location":"","title":"Hatch","text":"CI/CD Docs Package Meta

Hatch is a modern, extensible Python project manager. See the Why Hatch? page for more information.

"},{"location":"#license","title":"License","text":"

Hatch is distributed under the terms of the MIT license.

"},{"location":"#navigation","title":"Navigation","text":"

Documentation for specific MAJOR.MINOR versions can be chosen by using the dropdown on the top of every page. The dev version reflects changes that have not yet been released.

Also, desktop readers can use special keyboard shortcuts:

Keys Action Navigate to the \"previous\" page Navigate to the \"next\" page Display the search modal"},{"location":"build/","title":"Builds","text":""},{"location":"build/#configuration","title":"Configuration","text":"

Builds are configured using the tool.hatch.build table. Every target is defined by a section within tool.hatch.build.targets, for example:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.sdist]\nexclude = [\n  \"/.github\",\n  \"/docs\",\n]\n\n[tool.hatch.build.targets.wheel]\npackages = [\"src/foo\"]\n
[build.targets.sdist]\nexclude = [\n  \"/.github\",\n  \"/docs\",\n]\n\n[build.targets.wheel]\npackages = [\"src/foo\"]\n
"},{"location":"build/#building","title":"Building","text":"

Invoking the build command without any arguments will build the sdist and wheel targets:

$ hatch build\n[sdist]\ndist/hatch_demo-1rc0.tar.gz\n\n[wheel]\ndist/hatch_demo-1rc0-py3-none-any.whl\n

To only build specific targets, use the -t/--target option:

$ hatch build -t wheel\n[wheel]\ndist/hatch_demo-1rc0-py3-none-any.whl\n

If the target supports multiple versions, you can specify the exact versions to build by appending a colon followed by the desired versions separated by commas:

$ hatch -v build -t wheel:standard\n[wheel]\nBuilding `wheel` version `standard`\ndist/hatch_demo-1rc0-py3-none-any.whl\n
"},{"location":"build/#packaging-ecosystem","title":"Packaging ecosystem","text":"

Hatch complies with modern Python packaging specs and therefore your projects can be used by other tools with Hatch serving as just the build backend.

So you could use tox as an alternative to Hatch's environment management, or cibuildwheel to distribute packages for every platform, and they both will transparently use Hatch without any extra modification.

"},{"location":"environment/","title":"Environments","text":"

Environments are designed to allow for isolated workspaces for testing, building documentation, or anything else projects need.

Unless an environment is chosen explicitly, Hatch will use the default environment.

"},{"location":"environment/#creation","title":"Creation","text":"

You can create environments by using the env create command. Let's enter the directory of the project we created in the setup phase:

$ hatch env create\nCreating environment: default\nInstalling project in development mode\nSyncing dependencies\n

Tip

You never need to manually create environments as spawning a shell or running commands within one will automatically trigger creation.

"},{"location":"environment/#entering-environments","title":"Entering environments","text":"

You can spawn a shell within an environment by using the shell command.

$ hatch shell\n(hatch-demo) $\n

Now confirm the project has been installed:

(hatch-demo) $ pip show hatch-demo\nName: hatch-demo\nVersion: 0.0.1\n...\n

Finally, see where your environment's Python is located:

(hatch-demo) $ python -c \"import sys;print(sys.executable)\"\n...\n

You can type exit to leave the environment.

"},{"location":"environment/#command-execution","title":"Command execution","text":"

The run command allows you to execute commands in an environment as if you had already entered it. For example, running the following command will output the same path as before:

hatch run python -c \"import sys;print(sys.executable)\"\n
"},{"location":"environment/#scripts","title":"Scripts","text":"

You can also run any scripts that have been defined.

You'll notice that in the pyproject.toml file there are already scripts defined in the default environment. Try running the test command, which invokes pytest with some default arguments:

hatch run test\n

All additional arguments are passed through to that script, so for example if you wanted to see the version of pytest and which plugins are installed you could do:

hatch run test -VV\n
"},{"location":"environment/#dependencies","title":"Dependencies","text":"

Hatch ensures that environments are always compatible with the currently defined project dependencies (if installed and in dev mode) and environment dependencies.

To add cowsay as a dependency, open pyproject.toml and add it to the dependencies array:

pyproject.toml 
[project]\n...\ndependencies = [\n  \"cowsay\"\n]\n

This dependency will be installed the next time you spawn a shell or run a command. For example:

$ hatch run cowsay -t \"Hello, world!\"\nSyncing dependencies\n  _____________\n| Hello, world! |\n  =============\n             \\\n              \\\n                ^__^\n                (oo)\\_______\n                (__)\\       )\\/\\\n                    ||----w |\n                    ||     ||\n

Note

The Syncing dependencies status will display temporarily when Hatch updates environments in response to any dependency changes that you make.

"},{"location":"environment/#selection","title":"Selection","text":"

You can select which environment to enter or run commands in by using the -e/--env root option or by setting the HATCH_ENV environment variable.

The run command allows for more explicit selection by prepending <ENV_NAME>: to commands. For example, if you had the following configuration:

pyproject.toml hatch.toml 
[tool.hatch.envs.docs]\ndependencies = [\n  \"mkdocs\"\n]\n[tool.hatch.envs.docs.scripts]\nbuild = \"mkdocs build --clean --strict\"\nserve = \"mkdocs serve --dev-addr localhost:8000\"\n
[envs.docs]\ndependencies = [\n  \"mkdocs\"\n]\n[envs.docs.scripts]\nbuild = \"mkdocs build --clean --strict\"\nserve = \"mkdocs serve --dev-addr localhost:8000\"\n

you could then serve your documentation by running:

hatch run docs:serve\n

Tip

If you've already entered an environment, commands will target it by default.

"},{"location":"environment/#matrix","title":"Matrix","text":"

Every environment can define its own set of matrices:

pyproject.toml hatch.toml 
[tool.hatch.envs.test]\ndependencies = [\n  \"pytest\"\n]\n\n[[tool.hatch.envs.test.matrix]]\npython = [\"2.7\", \"3.8\"]\nversion = [\"42\", \"3.14\"]\n\n[[tool.hatch.envs.test.matrix]]\npython = [\"3.8\", \"3.9\"]\nversion = [\"9000\"]\nfeatures = [\"foo\", \"bar\"]\n
[envs.test]\ndependencies = [\n  \"pytest\"\n]\n\n[[envs.test.matrix]]\npython = [\"2.7\", \"3.8\"]\nversion = [\"42\", \"3.14\"]\n\n[[envs.test.matrix]]\npython = [\"3.8\", \"3.9\"]\nversion = [\"9000\"]\nfeatures = [\"foo\", \"bar\"]\n

Using the env show command would then display:

$ hatch env show --ascii\n     Standalone\n+---------+---------+\n| Name    | Type    |\n+=========+=========+\n| default | virtual |\n+---------+---------+\n                       Matrices\n+------+---------+---------------------+--------------+\n| Name | Type    | Envs                | Dependencies |\n+======+=========+=====================+==============+\n| test | virtual | test.py2.7-42       | pytest       |\n|      |         | test.py2.7-3.14     |              |\n|      |         | test.py3.8-42       |              |\n|      |         | test.py3.8-3.14     |              |\n|      |         | test.py3.8-9000-foo |              |\n|      |         | test.py3.8-9000-bar |              |\n|      |         | test.py3.9-9000-foo |              |\n|      |         | test.py3.9-9000-bar |              |\n+------+---------+---------------------+--------------+\n
"},{"location":"environment/#removal","title":"Removal","text":"

You can remove a single environment or environment matrix by using the env remove command or all of a project's environments by using the env prune command.

"},{"location":"install/","title":"Installation","text":""},{"location":"install/#installers","title":"Installers","text":"macOSWindows GUI installerCommand line installer
  1. In your browser, download the .pkg file: hatch-1.9.6.pkg
  2. Run your downloaded file and follow the on-screen instructions.
  3. Restart your terminal.

  4. To verify that the shell can find and run the hatch command in your PATH, use the following command.

    $ hatch --version\n1.9.6\n

  1. Download the file using the curl command. The -o option specifies the file name that the downloaded package is written to. In this example, the file is written to hatch-1.9.6.pkg in the current directory.

    curl -o hatch-1.9.6.pkg https://github.com/pypa/hatch/releases/download/hatch-v1.9.6/hatch-1.9.6.pkg\n

  2. Run the standard macOS installer program, specifying the downloaded .pkg file as the source. Use the -pkg parameter to specify the name of the package to install, and the -target / parameter for the drive in which to install the package. The files are installed to /usr/local/hatch, and an entry is created at /etc/paths.d/hatch that instructs shells to add the /usr/local/hatch directory to. You must include sudo on the command to grant write permissions to those folders.

    sudo installer -pkg ./hatch-1.9.6.pkg -target /\n

  3. Restart your terminal.

  4. To verify that the shell can find and run the hatch command in your PATH, use the following command.

    $ hatch --version\n1.9.6\n
GUI installerCommand line installer
  1. In your browser, download one the .msi files:
    • hatch-1.9.6-x64.msi
  2. Run your downloaded file and follow the on-screen instructions.
  3. Restart your terminal.

  4. To verify that the shell can find and run the hatch command in your PATH, use the following command.

    $ hatch --version\n1.9.6\n

  1. Download and run the installer using the standard Windows msiexec program, specifying one of the .msi files as the source. Use the /passive and /i parameters to request an unattended, normal installation.

    x64 
    msiexec /passive /i https://github.com/pypa/hatch/releases/download/hatch-v1.9.6/hatch-1.9.6-x64.msi\n

  2. Restart your terminal.

  3. To verify that the shell can find and run the hatch command in your PATH, use the following command.

    $ hatch --version\n1.9.6\n
"},{"location":"install/#standalone-binaries","title":"Standalone binaries","text":"

After downloading the archive corresponding to your platform and architecture, extract the binary to a directory that is on your PATH and rename to hatch.

LinuxmacOSWindows "},{"location":"install/#pip","title":"pip","text":"

Hatch is available on PyPI and can be installed with pip.

pip install hatch\n

Warning

This method modifies the Python environment in which you choose to install. Consider instead using pipx to avoid dependency conflicts.

"},{"location":"install/#pipx","title":"pipx","text":"

pipx allows for the global installation of Python applications in isolated environments.

pipx install hatch\n
"},{"location":"install/#homebrew","title":"Homebrew","text":"

See the formula for more details.

brew install hatch\n
"},{"location":"install/#conda","title":"Conda","text":"

See the feedstock for more details.

conda install -c conda-forge hatch\n

or with mamba:

mamba install hatch\n

Warning

This method modifies the Conda environment in which you choose to install. Consider instead using pipx or condax to avoid dependency conflicts.

"},{"location":"install/#macports","title":"MacPorts","text":"

See the port for more details.

sudo port install hatch\n
"},{"location":"install/#fedora","title":"Fedora","text":"

The minimum supported version is 37, currently in development as Rawhide.

sudo dnf install hatch\n
"},{"location":"install/#void-linux","title":"Void Linux","text":"
xbps-install hatch\n
"},{"location":"install/#build-system-availability","title":"Build system availability","text":"

Hatchling is Hatch's build backend which you will never need to install manually. See its changelog for version information.

"},{"location":"intro/","title":"Introduction","text":""},{"location":"intro/#setup","title":"Setup","text":"

Projects can be set up for use by Hatch using the new command.

"},{"location":"intro/#new-project","title":"New project","text":"

Let's say you want to create a project named Hatch Demo. You would run:

hatch new \"Hatch Demo\"\n

This would create the following structure in your current working directory:

hatch-demo\n\u251c\u2500\u2500 src\n\u2502   \u2514\u2500\u2500 hatch_demo\n\u2502       \u251c\u2500\u2500 __about__.py\n\u2502       \u2514\u2500\u2500 __init__.py\n\u251c\u2500\u2500 tests\n\u2502   \u2514\u2500\u2500 __init__.py\n\u251c\u2500\u2500 LICENSE.txt\n\u251c\u2500\u2500 README.md\n\u2514\u2500\u2500 pyproject.toml\n

Tip

There are many ways to customize project generation.

"},{"location":"intro/#existing-project","title":"Existing project","text":"

To initialize an existing project, enter the directory containing the project and run the following:

hatch new --init\n

If your project has a setup.py file the command will automatically migrate setuptools configuration for you. Otherwise, this will interactively guide you through the setup process.

"},{"location":"intro/#project-metadata","title":"Project metadata","text":"

Next you'll want to define more of your project's metadata located in the pyproject.toml file. You can specify things like its license, the supported versions of Python, and URLs referring to various parts of your project, like documentation.

"},{"location":"intro/#dependencies","title":"Dependencies","text":"

The last step of the setup process is to define any dependencies that you'd like your project to begin with.

"},{"location":"intro/#configuration","title":"Configuration","text":"

All project-specific configuration recognized by Hatch can be defined in either the pyproject.toml file, or a file named hatch.toml where options are not contained within the tool.hatch table:

pyproject.toml hatch.toml 
[tool.hatch]\noption = \"...\"\n\n[tool.hatch.table1]\noption = \"...\"\n\n[tool.hatch.table2]\noption = \"...\"\n
option = \"...\"\n\n[table1]\noption = \"...\"\n\n[table2]\noption = \"...\"\n

Top level keys in the latter file take precedence when defined in both.

Tip

If you want to make your file more compact, you can use dotted keys, turning the above example into:

pyproject.toml hatch.toml 
[tool.hatch]\noption = \"...\"\ntable1.option = \"...\"\ntable2.option = \"...\"\n
option = \"...\"\ntable1.option = \"...\"\ntable2.option = \"...\"\n
"},{"location":"next-steps/","title":"Next steps","text":""},{"location":"next-steps/#learn-more","title":"Learn more","text":"

At this point you should have a basic understanding of how to use Hatch.

Now you may want to check out advanced configuration for environments or builds, set up your preferred shell, or read more about Hatch's CLI.

After that, check out the Hatch Showcase project to see examples of what is possible.

Finally, if you see a need, feel free to write a plugin for extended functionality.

"},{"location":"next-steps/#community","title":"Community","text":"

For any projects using Hatch, you may add its official badge somewhere prominent like the README.

MarkdownreStructuredText 
[![Hatch project](https://img.shields.io/badge/%F0%9F%A5%9A-Hatch-4051b5.svg)](https://github.com/pypa/hatch)\n
.. image:: https://img.shields.io/badge/%F0%9F%A5%9A-Hatch-4051b5.svg\n   :alt: Hatch project\n   :target: https://github.com/pypa/hatch\n
"},{"location":"publish/","title":"Publishing","text":"

After your project is built, you can distribute it using the publish command.

The -p/--publisher option controls which publisher to use, with the default being index.

"},{"location":"publish/#artifact-selection","title":"Artifact selection","text":"

By default, the dist directory located at the root of your project will be used:

$ hatch publish\ndist/hatch_demo-1rc0-py3-none-any.whl ... success\ndist/hatch_demo-1rc0.tar.gz ... success\n\n[hatch-demo]\nhttps://pypi.org/project/hatch-demo/1rc0/\n

You can instead pass specific paths as arguments:

hatch publish /path/to/artifacts foo-1.tar.gz\n

Only files ending with .whl or .tar.gz will be published.

"},{"location":"publish/#repository","title":"Repository","text":"

You can select the repository with which to upload using the -r/--repo option or by setting the HATCH_INDEX_REPO environment variable.

Rather than specifying the full URL of a repository, you can use a named repository from a publish.index.repos table defined in Hatch's config file:

config.toml 
[publish.index.repos.private]\nurl = \"...\"\n...\n

The following repository names are reserved by Hatch and cannot be overridden:

Name Repository main https://upload.pypi.org/legacy/ test https://test.pypi.org/legacy/

The main repository is used by default.

"},{"location":"publish/#authentication","title":"Authentication","text":"

The first time you publish to a repository you need to authenticate using the -u/--user (environment variable HATCH_INDEX_USER) and -a/--auth (environment variable HATCH_INDEX_AUTH) options. You will be prompted if either option is not provided.

The user that most recently published to the chosen repository is cached, with their credentials saved to the system keyring, so that they will no longer need to provide authentication information.

For automated releasing to PyPI, it is recommended that you use per-project API tokens.

"},{"location":"publish/#confirmation","title":"Confirmation","text":"

You can require a confirmation prompt or use of the -y/--yes flag by setting publishers' disable option to true in either Hatch's config file or project-specific configuration (which takes precedence):

config.toml pyproject.toml hatch.toml 
[publish.index]\ndisable = true\n
[tool.hatch.publish.index]\ndisable = true\n
[publish.index]\ndisable = true\n
"},{"location":"version/","title":"Versioning","text":""},{"location":"version/#configuration","title":"Configuration","text":"

When the version is not statically set, configuration is defined in the tool.hatch.version table. The source option determines the source to use for retrieving and updating the version. The regex source is used by default.

The regex source requires an option path that represents a relative path to a file containing the project's version:

pyproject.toml hatch.toml 
[tool.hatch.version]\npath = \"src/hatch_demo/__about__.py\"\n
[version]\npath = \"src/hatch_demo/__about__.py\"\n

The default pattern looks for a variable named __version__ or VERSION that is set to a string containing the version, optionally prefixed with the lowercase letter v.

If this doesn't reflect how you store the version, you can define a different regular expression using the pattern option:

pyproject.toml hatch.toml 
[tool.hatch.version]\npath = \"pkg/__init__.py\"\npattern = \"BUILD = 'b(?P<version>[^']+)'\"\n
[version]\npath = \"pkg/__init__.py\"\npattern = \"BUILD = 'b(?P<version>[^']+)'\"\n

The pattern must have a named group called version that represents the version.

"},{"location":"version/#display","title":"Display","text":"

Invoking the version command without any arguments will display the current version of the project:

$ hatch version\n0.0.1\n
"},{"location":"version/#updating","title":"Updating","text":"

You can update the version like so:

$ hatch version \"0.1.0\"\nOld: 0.0.1\nNew: 0.1.0\n

The scheme option determines the scheme to use for parsing both the existing and new versions. The standard scheme is used by default, which is based on PEP 440.

Rather than setting the version explicitly, you can select the name of a segment used to increment the version:

$ hatch version minor\nOld: 0.1.0\nNew: 0.2.0\n

You can chain multiple segment updates with a comma. For example, if you wanted to release a preview of your project's first major version, you could do:

$ hatch version major,rc\nOld: 0.2.0\nNew: 1.0.0rc0\n

When you want to release the final version, you would do:

$ hatch version release\nOld: 1.0.0rc0\nNew: 1.0.0\n
"},{"location":"version/#supported-segments","title":"Supported segments","text":"

Here are the supported segments and how they would influence an existing version of 1.0.0:

Segments New version release 1.0.0 major 2.0.0 minor 1.1.0 micropatchfix 1.0.1 aalpha 1.0.0a0 bbeta 1.0.0b0 crcprepreview 1.0.0rc0 rrevpost 1.0.0.post0 dev 1.0.0.dev0"},{"location":"why/","title":"Why Hatch?","text":"

The high level value proposition of Hatch is that if one adopts all functionality then many other tools become unnecessary since there is support for everything one might require. Further, if one chooses to use only specific features then there are still benefits compared to alternatives.

"},{"location":"why/#build-backend","title":"Build backend","text":"

Hatchling, the build backend sister project, has many benefits compared to setuptools. Here we only compare setuptools as that is the one most people are familiar with.

Why not?:

If building extension modules is required then it is recommended that you continue using setuptools, or even other backends that specialize in interfacing with compilers.

"},{"location":"why/#environment-management","title":"Environment management","text":"

Here we compare to both tox and nox. At a high level, there are a few common advantages:

Why not?:

If you are using nox and you wish to migrate, and for some reason you notify sessions, then migration wouldn't be a straight translation but rather you might have to redesign that conditional step.

"},{"location":"why/#python-management","title":"Python management","text":"

Here we compare Python management to that of pyenv.

Why not?:

Currently, Hatch does not allow for the installation of specific patch release versions but rather only uses minor release granularity that tracks the latest patch release. If specific patch releases are important to you then it is best to use an alternative installation mechanism.

"},{"location":"blog/","title":"Blog","text":""},{"location":"blog/2022/10/08/hatch-v160/","title":"Hatch v1.6.0","text":"

Hatch v1.6.0 brings improvements to build environments, better handling of dynamic metadata, and support for tools like Visual Studio Code.

"},{"location":"blog/2022/10/08/hatch-v160/#build-environments","title":"Build environments","text":"

Originally, the environment interface method for providing builder sub-environments was intended to be used in conjunction with some cleanup logic in order to provide a fresh setup every time. However, this is unnecessary in practice because build dependencies rarely change.

Without caching, repeat build environment use is slow which affects the following scenarios:

Now a new environment interface method build_environment_exists is used by Hatch to determine whether or not it has already been created, for implementations that have a caching mechanism.

The virtual environment type now uses this method to cache build environments.

"},{"location":"blog/2022/10/08/hatch-v160/#project-metadata","title":"Project metadata","text":"

Dynamically defined metadata is now supported everywhere, thanks to the new caching of virtual build environments.

A project metadata command is introduced that displays the fully resolved metadata. The output format is JSON unless a field is specified as an argument.

For example, if you checkout a project that is built by Hatch, like FastAPI, and run:

hatch project metadata readme\n

only the readme text will be displayed. If the content is in Markdown, then Rich will render it directly in your terminal:

"},{"location":"blog/2022/10/08/hatch-v160/#virtual-environment-location","title":"Virtual environment location","text":"

The virtual environment type now uses a flat layout for storage in the configured virtual environment directory if the directory resides somewhere within the project root or if it is set to a .virtualenvs directory within the user's home directory.

For example, if you define the following Hatch configuration:

config.toml 
[dirs.env]\nvirtual = \".hatch\"\n

and the following matrix:

pyproject.toml hatch.toml 
[[tool.hatch.envs.test.matrix]]\npython = [\"3.7\", \"3.8\", \"3.9\", \"3.10\", \"3.11\"]\n
[[envs.test.matrix]]\npython = [\"3.7\", \"3.8\", \"3.9\", \"3.10\", \"3.11\"]\n

then locating environments with the following command:

hatch env find test\n

will show that the general directory structure is:

.hatch\n\u251c\u2500\u2500 test.py3.7\n\u251c\u2500\u2500 test.py3.8\n\u251c\u2500\u2500 test.py3.9\n\u251c\u2500\u2500 test.py3.10\n\u2514\u2500\u2500 test.py3.11\n

This flat structure is required for detection of virtual environments by tools like Visual Studio Code and PyCharm.

Additionally, the virtual environment type now supports a path option to specify an explicit path that all inherited environments will share, such as the common .venv.

"},{"location":"blog/2022/10/08/hatch-v160/#migration-script-improvements","title":"Migration script improvements","text":"

The script used to migrate existing projects from setuptools has been improved to handle more edge cases that were encountered in the wild and now no longer modifies the formatting of existing pyproject.toml configuration.

"},{"location":"blog/2022/10/08/hatch-v160/#hatchling","title":"Hatchling","text":"

Hatch now depends on Hatchling v1.11.0, which was also just released.

"},{"location":"blog/2022/10/08/hatch-v160/#environment-version-source","title":"Environment version source","text":"

A new env version source is available that allows for the project version to be defined by an environment variable.

"},{"location":"blog/2022/10/08/hatch-v160/#relaxed-version-bumping","title":"Relaxed version bumping","text":"

The standard version scheme now supports a validate-bump option that when set to false will forego the check when updating the version that the desired version is higher than the current version.

This use case comes from Project Jupyter:

A common pattern we use in Jupyter is to bump to a .dev0 minor version bump after making a release. If we have a bug fix that needs to go out in the interim, we'd rather not be forced to create a branch every time.

"},{"location":"blog/2023/12/11/hatch-v180/","title":"Hatch v1.8.0","text":"

Hatch v1.8.0 brings Python distribution management, static analysis and formatting backed by Ruff, and binaries for every platform.

"},{"location":"blog/2023/12/11/hatch-v180/#installation-made-easy","title":"Installation made easy","text":"

One thing that has been a perpetual problem for Hatch and other Python applications is that Python itself is a dependency. You, and more importantly your users, need to in some way get Python before your software can even be used. The recommended way to go about that is platform-dependent and even differs based on your target audience. I viewed this as a central UX problem for Hatch and so severe that I took a bit of a hiatus to solve it.

Luckily, I have to my satisfaction solved this problem in the form of PyApp. It is a runtime installer for Python projects written in Rust. Apps are distributed as standalone executables as users have come to expect and bootstrapping occurs upon the first invocation. Here is an example of what you would see the first time you run a binary from this release:

Now that we have binaries, creating installers for different platforms becomes trivial. Starting with this release not only are binaries available for every platform but also we have installers for Windows and macOS. The installer for macOS is signed using a certificate from the same account used to sign the official distributions from https://www.python.org, so users will not get any security pop-ups. Shout out to @ewdurbin for their extreme generosity in setting up multiple certificates in their free time!

These installers and binaries are now the recommended way to install and update Hatch. These binaries have built-in management so you can update to the latest version by running hatch self update.

Windows signing

In future we will sign the installers for Windows but I did not have time to look into how that works. macOS signing took way longer than I anticipated

"},{"location":"blog/2023/12/11/hatch-v180/#python-management","title":"Python management","text":"

For a long time I and other users have desired that Hatch gain the ability to manage Python distributions. In my mind this was always blocked on a better installation experience because there was sort of a chicken-or-egg problem where you want a Python manager but you first need Python. No longer is that the case!

The new python command group allows for easy installation of various distributions to arbitrary locations which are then added to your PATH by default. Hatch supports CPython and PyPy distributions:

"},{"location":"blog/2023/12/11/hatch-v180/#virtual-environment-python-resolution","title":"Virtual environment Python resolution","text":"

The virtual environment type is now far more intelligent when resolving the parent distribution to use and guarantees that, when no specific version is requested, the resolved distribution will always be compatible with the project.

Additionally, when a requested version cannot be found on PATH it will automatically be downloaded and managed internally.

"},{"location":"blog/2023/12/11/hatch-v180/#static-analysis","title":"Static analysis","text":"

There is a new fmt command, backed entirely by Ruff, that checks and fixes your code for formatting and linting issues.

Starting with this release, Hatch maintains default settings that are guaranteed to be up-to-date and represent best practices for programming in modern Python. The idea is to provide defaults that are so broadly applicable that the majority of users will maintain little if any of their own overrides.

The default behavior is internal management of settings to provide an OOTB experience that works. It is recommended however that you persist the default config file in version control so that other tools like IDEs can utilize your full configuration.

Since Ruff is now provided as a built-in feature, new project templates no longer have such configuration and are much less verbose.

"},{"location":"blog/2023/12/11/hatch-v180/#build-improvements","title":"Build improvements","text":"

Building projects that do not use Hatchling as a backend is now supported and such builds are managed with the standard build tool.

The bridge between Hatch and the Hatchling CLI has been removed. Previously, the builder would send serialized messages to Hatch that would contain the desired content and style for each line of output. This was done in an effort to allow builder and build hook plugins to output pretty messages without actually requiring a dependency like Rich. A problem that arises with this is that builders that invoke subprocesses will not display ANSI codes as one might expect and will lose out on the interactive experience of such invocations, like the built-in app builder plugin calling cargo build. So now everything is simpler at the expense of no colored output without manual logic, or adding a dependency if you're a third-party plugin.

"},{"location":"blog/2023/12/11/hatch-v180/#faster-environment-usage","title":"Faster environment usage","text":"

Spawning a shell or running commands within environments always first checks that your project's dependencies are satisfied and if not synchronizes the environment with what is defined. Previously, this had the potential to be quite slow for projects that have many dependencies.

Now the set of dependency definitions is hashed and no check is performed if the hash is the same as before, significantly speeding up environment usage in most cases.

"},{"location":"blog/2023/12/11/hatch-v180/#hatchling","title":"Hatchling","text":"

Hatch now depends on Hatchling v1.19.0, which was also just released.

"},{"location":"blog/2023/12/11/hatch-v180/#better-defaults","title":"Better defaults","text":"

Hatchling is all about providing the best possible defaults, even at the expense of backward compatibility. In this release, there are two breaking changes that provide a much better user experience and were in fact requested by users.

"},{"location":"blog/2023/12/11/hatch-v180/#app-build-target","title":"App build target","text":"

A new app build target is now stable that allows for the building of standalone binaries for projects. This is what Hatch itself uses for its binaries.

"},{"location":"blog/2023/12/11/hatch-v180/#meta","title":"Meta","text":""},{"location":"blog/2023/12/11/hatch-v180/#why-hatch","title":"Why Hatch?","text":"

A new page has been introduced that discusses the value proposition of Hatch and Hatchling in comparison to alternatives. Currently, it only addresses a few features but in future this page will become more comprehensive.

"},{"location":"blog/2023/12/11/hatch-v180/#future","title":"Future","text":"

Upcoming features include a test command, commands to manage dependencies, and workspaces functionality similar to Cargo that will make managing monorepos far easier.

Next year there will be two large efforts that you should expect to see:

  1. A significant amount of my free time (and some at work) will be devoted to introducing lock file functionality in Hatch and trying to get whatever that happens to be standardized.

    I met with @brettcannon about his thoughts post-PEP 665 and about mousebender. I also met with the prefix.dev team about rip and was fortunate enough to be shown a demo before its official announcement.

    At the moment, the two options I see are to either go all in and contribute to mousebender or rely on the Prefix folks and use rip. The latter has the benefit of potentially supporting Conda as a side effect with the downside of being quite new with the spec firmly out of our control. The former has the benefit of being able to easily gain institutional support from the Python packaging team and each of our employers with the downside being a significant amount of work needing to be done.

  2. When @henryiii is able to get some free time away from teaching I plan to work with him once again and push very hard for the Python build ecosystem to adopt the extensionlib approach.

    I am of the opinion that the Python community has not fully completed the expressed outcome of PEP 517 in that build backends are still (for the most part) reliant on setuptools for building non-Python code bases.

    Basically, there are components that interact with compilers to produce extension modules and components that pack files into an archive which we call a build backend. These are two distinct pieces of functionality and my view is that there should be an API that allows backends to consume extension module builders to find out where things got created and where they should be shipped inside archives.

    In this hypothetical future any build backend would be able to trigger the building of extension modules based on user configuration.

"},{"location":"blog/2023/12/11/hatch-v180/#support","title":"Support","text":"

If you or your organization finds value in what Hatch provides, consider a sponsorship to assist with maintenance and more rapid development!

"},{"location":"blog/2023/12/18/hatch-v190/","title":"Hatch v1.9.0","text":"

Hatch v1.9.0 brings improvements to static analysis and important bug fixes.

"},{"location":"blog/2023/12/18/hatch-v190/#static-analysis","title":"Static analysis","text":"

The default version of Ruff has been increased to v0.1.8. This release brings formatting capabilities to docstrings and Hatch enables this by default with line length set to 80. This length was chosen as the default because it plays nicely with the rendering of the most popular themes for Python documentation, such as Material for MkDocs and Furo.

Additionally, it is now possible for projects to pin to specific versions of Ruff for upgrading at a later time:

pyproject.toml hatch.toml 
[tool.hatch.envs.hatch-static-analysis]\ndependencies = [\"ruff==X.Y.Z\"]\n
[envs.hatch-static-analysis]\ndependencies = [\"ruff==X.Y.Z\"]\n
"},{"location":"blog/2023/12/18/hatch-v190/#notable-fixes","title":"Notable fixes","text":""},{"location":"cli/about/","title":"About","text":""},{"location":"cli/about/#verbosity","title":"Verbosity","text":"

The amount of displayed output is controlled solely by the -v/--verbose (environment variable HATCH_VERBOSE) and -q/--quiet (environment variable HATCH_QUIET) root options.

The levels are documented here.

"},{"location":"cli/about/#project-awareness","title":"Project awareness","text":"

No matter the mode, Hatch will always change to the project's root directory for entering or running commands in environments.

"},{"location":"cli/about/#tab-completion","title":"Tab completion","text":"

Completion is achieved by saving a script and then executing it as a part of your shell's startup sequence.

Afterward, you'll need to start a new shell in order for the changes to take effect.

BashZ shellfish

Save the script somewhere:

_HATCH_COMPLETE=bash_source hatch > ~/.hatch-complete.bash\n

Source the file in ~/.bashrc (or ~/.bash_profile if on macOS):

. ~/.hatch-complete.bash\n

Save the script somewhere:

_HATCH_COMPLETE=zsh_source hatch > ~/.hatch-complete.zsh\n

Source the file in ~/.zshrc:

. ~/.hatch-complete.zsh\n

Save the script in ~/.config/fish/completions:

_HATCH_COMPLETE=fish_source hatch > ~/.config/fish/completions/hatch.fish\n
"},{"location":"cli/reference/","title":"hatch","text":"

Usage:

hatch [OPTIONS] COMMAND [ARGS]...\n

Options:

Name Type Description Default --env, -e text The name of the environment to use [env var: HATCH_ENV] default --project, -p text The name of the project to work on [env var: HATCH_PROJECT] None --verbose, -v integer range (0 and above) Increase verbosity (can be used additively) [env var: HATCH_VERBOSE] 0 --quiet, -q integer range (0 and above) Decrease verbosity (can be used additively) [env var: HATCH_QUIET] 0 --color / --no-color boolean Whether or not to display colored output (default is auto-detection) [env vars: FORCE_COLOR/NO_COLOR] None --interactive / --no-interactive boolean Whether or not to allow features like prompts and progress bars (default is auto-detection) [env var: HATCH_INTERACTIVE] None --data-dir text The path to a custom directory used to persist data [env var: HATCH_DATA_DIR] None --cache-dir text The path to a custom directory used to cache data [env var: HATCH_CACHE_DIR] None --config text The path to a custom config file to use [env var: HATCH_CONFIG] None --version boolean Show the version and exit. False --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-build","title":"hatch build","text":"

Build a project.

Usage:

hatch build [OPTIONS] [LOCATION]\n

Options:

Name Type Description Default --target, -t text The target to build, overriding project defaults. This may be selected multiple times e.g. -t sdist -t wheel None --hooks-only boolean Whether or not to only execute build hooks [env var: HATCH_BUILD_HOOKS_ONLY] False --no-hooks boolean Whether or not to disable build hooks [env var: HATCH_BUILD_NO_HOOKS] False --ext boolean Whether or not to only execute build hooks for distributing binary Python packages, such as compiling extensions. Equivalent to --hooks-only -t wheel False --clean, -c boolean Whether or not existing artifacts should first be removed [env var: HATCH_BUILD_CLEAN] False --clean-hooks-after boolean Whether or not build hook artifacts should be removed after each build [env var: HATCH_BUILD_CLEAN_HOOKS_AFTER] False --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-clean","title":"hatch clean","text":"

Remove build artifacts.

Usage:

hatch clean [OPTIONS] [LOCATION]\n

Options:

Name Type Description Default --target, -t text The target with which to remove artifacts, overriding project defaults. This may be selected multiple times e.g. -t sdist -t wheel None --hooks-only boolean Whether or not to only remove artifacts from build hooks [env var: HATCH_BUILD_HOOKS_ONLY] False --no-hooks boolean Whether or not to ignore artifacts from build hooks [env var: HATCH_BUILD_NO_HOOKS] False --ext boolean Whether or not to only remove artifacts from build hooks for distributing binary Python packages, such as compiled extensions. Equivalent to --hooks-only -t wheel False --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-config","title":"hatch config","text":"

Manage the config file

Usage:

hatch config [OPTIONS] COMMAND [ARGS]...\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-config-explore","title":"hatch config explore","text":"

Open the config location in your file manager.

Usage:

hatch config explore [OPTIONS]\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-config-find","title":"hatch config find","text":"

Show the location of the config file.

Usage:

hatch config find [OPTIONS]\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-config-restore","title":"hatch config restore","text":"

Restore the config file to default settings.

Usage:

hatch config restore [OPTIONS]\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-config-set","title":"hatch config set","text":"

Assign values to config file entries. If the value is omitted, you will be prompted, with the input hidden if it is sensitive.

Usage:

hatch config set [OPTIONS] KEY [VALUE]\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-config-show","title":"hatch config show","text":"

Show the contents of the config file.

Usage:

hatch config show [OPTIONS]\n

Options:

Name Type Description Default --all, -a boolean Do not scrub secret fields False --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-config-update","title":"hatch config update","text":"

Update the config file with any new fields.

Usage:

hatch config update [OPTIONS]\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-dep","title":"hatch dep","text":"

Manage environment dependencies

Usage:

hatch dep [OPTIONS] COMMAND [ARGS]...\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-dep-hash","title":"hatch dep hash","text":"

Output a hash of the currently defined dependencies.

Usage:

hatch dep hash [OPTIONS]\n

Options:

Name Type Description Default --project-only, -p boolean Whether or not to exclude environment dependencies False --env-only, -e boolean Whether or not to exclude project dependencies False --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-dep-show","title":"hatch dep show","text":"

Display dependencies in various formats

Usage:

hatch dep show [OPTIONS] COMMAND [ARGS]...\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-dep-show-requirements","title":"hatch dep show requirements","text":"

Enumerate dependencies as a list of requirements.

Usage:

hatch dep show requirements [OPTIONS]\n

Options:

Name Type Description Default --project-only, -p boolean Whether or not to exclude environment dependencies False --env-only, -e boolean Whether or not to exclude project dependencies False --feature, -f text Whether or not to only show the dependencies of the specified features None --all boolean Whether or not to include the dependencies of all features False --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-dep-show-table","title":"hatch dep show table","text":"

Enumerate dependencies in a tabular format.

Usage:

hatch dep show table [OPTIONS]\n

Options:

Name Type Description Default --project-only, -p boolean Whether or not to exclude environment dependencies False --env-only, -e boolean Whether or not to exclude project dependencies False --lines, -l boolean Whether or not to show lines between table rows False --ascii boolean Whether or not to only use ASCII characters False --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-env","title":"hatch env","text":"

Manage project environments

Usage:

hatch env [OPTIONS] COMMAND [ARGS]...\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-env-create","title":"hatch env create","text":"

Create environments.

Usage:

hatch env create [OPTIONS] [ENV_NAME]\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-env-find","title":"hatch env find","text":"

Locate environments.

Usage:

hatch env find [OPTIONS] [ENV_NAME]\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-env-prune","title":"hatch env prune","text":"

Remove all environments.

Usage:

hatch env prune [OPTIONS]\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-env-remove","title":"hatch env remove","text":"

Remove environments.

Usage:

hatch env remove [OPTIONS] [ENV_NAME]\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-env-run","title":"hatch env run","text":"

Run commands within project environments.

The -e/--env option overrides the equivalent root option and the HATCH_ENV environment variable.

If environments provide matrices, then you may use the -i/--include and -x/--exclude options to select or exclude certain variables, optionally followed by specific comma-separated values. For example, if you have the following configuration:

pyproject.toml hatch.toml 
[[tool.hatch.envs.test.matrix]]\npython = [\"3.9\", \"3.10\"]\nversion = [\"42\", \"3.14\", \"9000\"]\n
[[envs.test.matrix]]\npython = [\"3.9\", \"3.10\"]\nversion = [\"42\", \"3.14\", \"9000\"]\n

then running:

hatch env run -i py=3.10 -x version=9000 test:pytest\n

would execute pytest in the environments test.py3.10-42 and test.py3.10-3.14. Note that py may be used as an alias for python.

Usage:

hatch env run [OPTIONS] ARGS...\n

Options:

Name Type Description Default --env, -e text The environments to target None --include, -i text The matrix variables to include None --exclude, -x text The matrix variables to exclude None --filter, -f text The JSON data used to select environments None --force-continue boolean Run every command and if there were any errors exit with the first code False --ignore-compat boolean Ignore incompatibility when selecting specific environments False --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-env-show","title":"hatch env show","text":"

Show the available environments.

Usage:

hatch env show [OPTIONS] [ENVS]...\n

Options:

Name Type Description Default --ascii boolean Whether or not to only use ASCII characters False --json boolean Whether or not to output in JSON format False --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-fmt","title":"hatch fmt","text":"

Format and lint source code.

Usage:

hatch fmt [OPTIONS] [ARGS]...\n

Options:

Name Type Description Default --check boolean Only check for errors rather than fixing them False --preview / --no-preview boolean Preview new rules and formatting None --linter, -l boolean Only run the linter False --formatter, -f boolean Only run the formatter False --sync boolean Sync the default config file with the current version of Hatch False --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-new","title":"hatch new","text":"

Create or initialize a project.

Usage:

hatch new [OPTIONS] [NAME] [LOCATION]\n

Options:

Name Type Description Default --interactive, -i boolean Interactively choose details about the project False --cli boolean Give the project a command line interface False --init boolean Initialize an existing project False --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-project","title":"hatch project","text":"

View project information

Usage:

hatch project [OPTIONS] COMMAND [ARGS]...\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-project-metadata","title":"hatch project metadata","text":"

Display project metadata.

If you want to view the raw readme file without rendering, you can use a JSON parser like jq:

hatch project metadata | jq -r .readme\n

Usage:

hatch project metadata [OPTIONS] [FIELD]\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-publish","title":"hatch publish","text":"

Publish build artifacts.

Usage:

hatch publish [OPTIONS] [ARTIFACTS]...\n

Options:

Name Type Description Default --repo, -r text The repository with which to publish artifacts [env var: HATCH_INDEX_REPO] None --user, -u text The user with which to authenticate [env var: HATCH_INDEX_USER] None --auth, -a text The credentials to use for authentication [env var: HATCH_INDEX_AUTH] None --ca-cert text The path to a CA bundle [env var: HATCH_INDEX_CA_CERT] None --client-cert text The path to a client certificate, optionally containing the private key [env var: HATCH_INDEX_CLIENT_CERT] None --client-key text The path to the client certificate's private key [env var: HATCH_INDEX_CLIENT_KEY] None --no-prompt, -n boolean Disable prompts, such as for missing required fields False --initialize-auth boolean Save first-time authentication information even if nothing was published False --publisher, -p text The publisher plugin to use (default is index) [env var: HATCH_PUBLISHER] index --option, -o text Options to pass to the publisher plugin. This may be selected multiple times e.g. -o foo=bar -o baz=23 [env var: HATCH_PUBLISHER_OPTIONS] None --yes, -y boolean Confirm without prompting when the plugin is disabled False --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-python","title":"hatch python","text":"

Manage Python installations

Usage:

hatch python [OPTIONS] COMMAND [ARGS]...\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-python-find","title":"hatch python find","text":"

Locate Python binaries.

Usage:

hatch python find [OPTIONS] NAME\n

Options:

Name Type Description Default -p, --parent boolean Show the parent directory of the Python binary False --dir, -d text The directory in which distributions reside None --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-python-install","title":"hatch python install","text":"

Install Python distributions.

You may select all to install all compatible distributions:

hatch python install all\n

Usage:

hatch python install [OPTIONS] NAMES...\n

Options:

Name Type Description Default --private boolean Do not add distributions to the user PATH False --update, -u boolean Update existing installations False --dir, -d text The directory in which to install distributions, overriding configuration None --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-python-remove","title":"hatch python remove","text":"

Remove Python distributions.

You may select all to remove all installed distributions:

hatch python remove all\n

Usage:

hatch python remove [OPTIONS] NAMES...\n

Options:

Name Type Description Default --dir, -d text The directory in which distributions reside None --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-python-show","title":"hatch python show","text":"

Show the available Python distributions.

Usage:

hatch python show [OPTIONS]\n

Options:

Name Type Description Default --ascii boolean Whether or not to only use ASCII characters False --dir, -d text The directory in which distributions reside None --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-python-update","title":"hatch python update","text":"

Update Python distributions.

You may select all to update all installed distributions:

hatch python update all\n

Usage:

hatch python update [OPTIONS] NAMES...\n

Options:

Name Type Description Default --dir, -d text The directory in which distributions reside None --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-run","title":"hatch run","text":"

Run commands within project environments. This is a convenience wrapper around the env run command.

If the first argument contains a colon, then the preceding component will be interpreted as the name of the environment to target, overriding the -e/--env root option and the HATCH_ENV environment variable.

If the environment provides matrices, then you may also provide leading arguments starting with a + or - to select or exclude certain variables, optionally followed by specific comma-separated values. For example, if you have the following configuration:

pyproject.toml hatch.toml 
[[tool.hatch.envs.test.matrix]]\npython = [\"3.9\", \"3.10\"]\nversion = [\"42\", \"3.14\", \"9000\"]\n
[[envs.test.matrix]]\npython = [\"3.9\", \"3.10\"]\nversion = [\"42\", \"3.14\", \"9000\"]\n

then running:

hatch run +py=3.10 -version=9000 test:pytest\n

would execute pytest in the environments test.py3.10-42 and test.py3.10-3.14. Note that py may be used as an alias for python.

Usage:

hatch run [OPTIONS] [ENV:]ARGS...\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-shell","title":"hatch shell","text":"

Enter a shell within a project's environment.

Usage:

hatch shell [OPTIONS] [SHELL_NAME] [SHELL_PATH] [SHELL_ARGS]...\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-status","title":"hatch status","text":"

Show information about the current environment.

Usage:

hatch status [OPTIONS]\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"cli/reference/#hatch-version","title":"hatch version","text":"

View or set a project's version.

Usage:

hatch version [OPTIONS] [DESIRED_VERSION]\n

Options:

Name Type Description Default --help boolean Show this message and exit. False"},{"location":"community/contributing/","title":"Contributing","text":"

The usual process to make a contribution is to:

  1. Check for existing related issues
  2. Fork the repository and create a new branch
  3. Make your changes
  4. Make sure formatting, linting and tests passes.
  5. Add tests if possible to cover the lines you added.
  6. Commit, and send a Pull Request.
"},{"location":"community/contributing/#clone-the-repository","title":"Clone the repository","text":"

Clone the hatch repository, cd into it, and create a new branch for your contribution:

cd hatch\ngit checkout -b add-my-contribution\n
"},{"location":"community/contributing/#run-the-tests","title":"Run the tests","text":"

Run the test suite while developing:

hatch run dev\n

Run the test suite with coverage report:

hatch run cov\n

Run the extended test suite with coverage:

hatch run full\n
"},{"location":"community/contributing/#lint","title":"Lint","text":"

Run automated formatting:

hatch run lint:fmt\n

Run full linting and type checking:

hatch run lint:all\n
"},{"location":"community/contributing/#docs","title":"Docs","text":"

Start the documentation in development:

hatch run docs:serve\n

Build and validate the documentation website:

hatch run build-check\n
"},{"location":"community/highlights/","title":"Highlights","text":""},{"location":"community/highlights/#integration","title":"Integration","text":""},{"location":"community/highlights/#adoption","title":"Adoption","text":""},{"location":"community/users/","title":"Users","text":"

The following is not intended to be a complete enumeration. Be sure to view the development version of this page for an up-to-date listing.

"},{"location":"community/users/#projects","title":"Projects","text":"

aiogram | argon2-cffi | attrs | Black | coffea | Colorama | Django Anymail | Django Debug Toolbar | Django Wiki | FastAPI | filelock | github3.py | Gradio | HTTPX | iCalendar for Humans | LinkChecker | Material for MkDocs | MkDocs | openSUSE | Nox | Packit | pipx | platformdirs | Pydantic | Pygments | PyHamcrest | PyMdown Extensions | Python JSON Schema | Rye | SALib | Spack | Starlette | structlog | tox | Twisted | urllib3 | Uvicorn | virtualenv | Voil\u00e0 | XGBoost | Ypy

"},{"location":"community/users/#industry","title":"Industry","text":""},{"location":"community/users/#organizations","title":"Organizations","text":""},{"location":"community/users/#government","title":"Government","text":""},{"location":"community/users/#academia","title":"Academia","text":""},{"location":"community/users/#research","title":"Research","text":""},{"location":"community/users/#security","title":"Security","text":""},{"location":"community/users/#crypto","title":"Crypto","text":""},{"location":"config/build/","title":"Build configuration","text":"

Build targets are defined as sections within tool.hatch.build.targets:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.<TARGET_NAME>]\n
[build.targets.<TARGET_NAME>]\n

Tip

Although not recommended, you may define global configuration in the tool.hatch.build table. Keys may then be overridden by target config.

"},{"location":"config/build/#build-system","title":"Build system","text":"

To be compatible with the broader Python packaging ecosystem, you must define the build system as follows:

pyproject.toml 
[build-system]\nrequires = [\"hatchling\"]\nbuild-backend = \"hatchling.build\"\n

The version of hatchling defined here will be used to build all targets.

Hatchling is a standards-compliant1 build backend and is a dependency of Hatch itself.

"},{"location":"config/build/#file-selection","title":"File selection","text":""},{"location":"config/build/#vcs","title":"VCS","text":"

By default, Hatch will respect the first .gitignore or .hgignore file found in your project's root directory or parent directories. Set ignore-vcs to true to disable this behavior:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.sdist]\nignore-vcs = true\n
[build.targets.sdist]\nignore-vcs = true\n

Note

For .hgignore files only glob syntax is supported.

"},{"location":"config/build/#patterns","title":"Patterns","text":"

You can set the include and exclude options to select exactly which files will be shipped in each build, with exclude taking precedence. Every entry represents a Git-style glob pattern.

For example, the following configuration:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.sdist]\ninclude = [\n  \"pkg/*.py\",\n  \"/tests\",\n]\nexclude = [\n  \"*.json\",\n  \"pkg/_compat.py\",\n]\n
[build.targets.sdist]\ninclude = [\n  \"pkg/*.py\",\n  \"/tests\",\n]\nexclude = [\n  \"*.json\",\n  \"pkg/_compat.py\",\n]\n

will exclude every file with a .json extension, and will include everything under a tests directory located at the root and every file with a .py extension that is directly under a pkg directory located at the root except for _compat.py.

"},{"location":"config/build/#artifacts","title":"Artifacts","text":"

If you want to include files that are ignored by your VCS, such as those that might be created by build hooks, you can use the artifacts option. This option is semantically equivalent to include.

Note that artifacts are not affected by the exclude option. Artifacts can be excluded by using more explicit paths or by using the ! negation operator. When using the ! operator, the negated pattern(s) must come after the more generic ones.

pyproject.toml hatch.toml 
[tool.hatch.build.targets.wheel]\nartifacts = [\n  \"*.so\",\n  \"*.dll\",\n  \"!/foo/*.so\",\n]\n
[build.targets.wheel]\nartifacts = [\n  \"*.so\",\n  \"*.dll\",\n  \"!/foo/*.so\",\n]\n
"},{"location":"config/build/#explicit-selection","title":"Explicit selection","text":""},{"location":"config/build/#generic","title":"Generic","text":"

You can use the only-include option to prevent directory traversal starting at the project root and only select specific relative paths to directories or files. Using this option ignores any defined include patterns.

pyproject.toml hatch.toml 
[tool.hatch.build.targets.sdist]\nonly-include = [\"pkg\", \"tests/unit\"]\n
[build.targets.sdist]\nonly-include = [\"pkg\", \"tests/unit\"]\n
"},{"location":"config/build/#packages","title":"Packages","text":"

The packages option is semantically equivalent to only-include (which takes precedence) except that the shipped path will be collapsed to only include the final component.

So for example, if you want to ship a package foo that is stored in a directory src you would do:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.wheel]\npackages = [\"src/foo\"]\n
[build.targets.wheel]\npackages = [\"src/foo\"]\n
"},{"location":"config/build/#forced-inclusion","title":"Forced inclusion","text":"

The force-include option allows you to select specific files or directories from anywhere on the file system that should be included and map them to the desired relative distribution path.

For example, if there was a directory alongside the project root named artifacts containing a file named lib.so and a file named lib.h in your home directory, you could ship both files in a pkg directory with the following configuration:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.wheel.force-include]\n\"../artifacts\" = \"pkg\"\n\"~/lib.h\" = \"pkg/lib.h\"\n
[build.targets.wheel.force-include]\n\"../artifacts\" = \"pkg\"\n\"~/lib.h\" = \"pkg/lib.h\"\n

Note

Warning

Files included using this option will overwrite any file path that was already included by other file selection options.

"},{"location":"config/build/#default-file-selection","title":"Default file selection","text":"

If no file selection options are provided, then what gets included is determined by each build target.

"},{"location":"config/build/#excluding-files-outside-packages","title":"Excluding files outside packages","text":"

If you want to exclude non-artifact files that do not reside within a Python package, set only-packages to true:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.wheel]\nonly-packages = true\n
[build.targets.wheel]\nonly-packages = true\n
"},{"location":"config/build/#rewriting-paths","title":"Rewriting paths","text":"

You can rewrite relative paths to directories with the sources option. For example, the following configuration:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.wheel.sources]\n\"src/foo\" = \"bar\"\n
[build.targets.wheel.sources]\n\"src/foo\" = \"bar\"\n

would distribute the file src/foo/file.ext as bar/file.ext.

If you want to remove path prefixes entirely, rather than setting each to an empty string, you can define sources as an array:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.wheel]\nsources = [\"src\"]\n
[build.targets.wheel]\nsources = [\"src\"]\n

If you want to add a prefix to paths, you can use an empty string. For example, the following configuration:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.wheel.sources]\n\"\" = \"foo\"\n
[build.targets.wheel.sources]\n\"\" = \"foo\"\n

would distribute the file bar/file.ext as foo/bar/file.ext.

The packages option itself relies on sources. Defining packages = [\"src/foo\"] for the wheel target is equivalent to the following:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.wheel]\nonly-include = [\"src/foo\"]\nsources = [\"src\"]\n
[build.targets.wheel]\nonly-include = [\"src/foo\"]\nsources = [\"src\"]\n
"},{"location":"config/build/#performance","title":"Performance","text":"

All encountered directories are traversed by default. To skip non-artifact directories that are excluded, set skip-excluded-dirs to true:

pyproject.toml hatch.toml 
[tool.hatch.build]\nskip-excluded-dirs = true\n
[build]\nskip-excluded-dirs = true\n

Warning

This may result in not shipping desired files. For example, if you want to include the file a/b/c.txt but your VCS ignores a/b, the file c.txt will not be seen because its parent directory will not be entered. In such cases you can use the force-include option.

"},{"location":"config/build/#reproducible-builds","title":"Reproducible builds","text":"

By default, build targets will build in a reproducible manner provided that they support that behavior. To disable this, set reproducible to false:

pyproject.toml hatch.toml 
[tool.hatch.build]\nreproducible = false\n
[build]\nreproducible = false\n

When enabled, the SOURCE_DATE_EPOCH environment variable will be used for all build timestamps. If not set, then Hatch will use an unchanging default value.

"},{"location":"config/build/#output-directory","title":"Output directory","text":"

When the output directory is not provided to the build command, the dist directory will be used by default. You can change the default to a different directory using a relative or absolute path like so:

pyproject.toml hatch.toml 
[tool.hatch.build]\ndirectory = \"<PATH>\"\n
[build]\ndirectory = \"<PATH>\"\n
"},{"location":"config/build/#dev-mode","title":"Dev mode","text":"

By default for dev mode environment installations or editable installs, the wheel target will determine which directories should be added to Python's search path based on the selected files.

If you want to override this detection or perhaps instruct other build targets as well, you can use the dev-mode-dirs option:

pyproject.toml hatch.toml 
[tool.hatch.build]\ndev-mode-dirs = [\".\"]\n
[build]\ndev-mode-dirs = [\".\"]\n

If you don't want to add entire directories to Python's search path, you can enable a more targeted mechanism with the mutually exclusive dev-mode-exact option:

pyproject.toml hatch.toml 
[tool.hatch.build]\ndev-mode-exact = true\n
[build]\ndev-mode-exact = true\n

Warning

The dev-mode-exact mechanism is not supported by static analysis tools & IDEs, therefore functionality such as autocompletion is unlikely to work.

"},{"location":"config/build/#build-targets","title":"Build targets","text":"

A build target can be provided by any builder plugin. There are three built-in build targets: wheel, sdist, and custom.

"},{"location":"config/build/#dependencies","title":"Dependencies","text":"

You can specify additional dependencies that will be installed in each build environment, such as for third party builders:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.your-target-name]\ndependencies = [\n  \"your-builder-plugin\"\n]\n
[build.targets.your-target-name]\ndependencies = [\n  \"your-builder-plugin\"\n]\n

You can also declare dependence on the project's runtime dependencies with the require-runtime-dependencies option:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.your-target-name]\nrequire-runtime-dependencies = true\n
[build.targets.your-target-name]\nrequire-runtime-dependencies = true\n

Additionally, you may declare dependence on specific runtime features of the project with the require-runtime-features option:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.your-target-name]\nrequire-runtime-features = [\n  \"feature1\",\n  \"feature2\",\n]\n
[build.targets.your-target-name]\nrequire-runtime-features = [\n  \"feature1\",\n  \"feature2\",\n]\n
"},{"location":"config/build/#versions","title":"Versions","text":"

If a build target supports multiple build strategies or if there are major changes over time, you can specify exactly which versions you want to build using the versions option:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.<TARGET_NAME>]\nversions = [\n  \"v1\",\n  \"beta-feature\",\n]\n
[build.targets.<TARGET_NAME>]\nversions = [\n  \"v1\",\n  \"beta-feature\",\n]\n

See the wheel target for a real world example.

"},{"location":"config/build/#build-hooks","title":"Build hooks","text":"

A build hook defines code that will be executed at various stages of the build process and can be provided by any build hook plugin. There is one built-in build hook: custom.

Build hooks can be applied either globally:

pyproject.toml hatch.toml 
[tool.hatch.build.hooks.<HOOK_NAME>]\n
[build.hooks.<HOOK_NAME>]\n

or to specific build targets:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.<TARGET_NAME>.hooks.<HOOK_NAME>]\n
[build.targets.<TARGET_NAME>.hooks.<HOOK_NAME>]\n
"},{"location":"config/build/#dependencies_1","title":"Dependencies","text":"

You can specify additional dependencies that will be installed in each build environment, such as for third party build hooks:

pyproject.toml hatch.toml 
[tool.hatch.build.hooks.your-hook-name]\ndependencies = [\n  \"your-build-hook-plugin\"\n]\n
[build.hooks.your-hook-name]\ndependencies = [\n  \"your-build-hook-plugin\"\n]\n

You can also declare dependence on the project's runtime dependencies with the require-runtime-dependencies option:

pyproject.toml hatch.toml 
[tool.hatch.build.hooks.your-hook-name]\nrequire-runtime-dependencies = true\n
[build.hooks.your-hook-name]\nrequire-runtime-dependencies = true\n

Additionally, you may declare dependence on specific runtime features of the project with the require-runtime-features option:

pyproject.toml hatch.toml 
[tool.hatch.build.hooks.your-hook-name]\nrequire-runtime-features = [\n  \"feature1\",\n  \"feature2\",\n]\n
[build.hooks.your-hook-name]\nrequire-runtime-features = [\n  \"feature1\",\n  \"feature2\",\n]\n
"},{"location":"config/build/#order-of-execution","title":"Order of execution","text":"

For each build target, build hooks execute in the order in which they are defined, starting with global hooks.

As an example, for the following configuration:

pyproject.toml hatch.toml 
[tool.hatch.build.targets.foo.hooks.hook2]\n\n[tool.hatch.build.hooks.hook3]\n[tool.hatch.build.hooks.hook1]\n
[build.targets.foo.hooks.hook2]\n\n[build.hooks.hook3]\n[build.hooks.hook1]\n

When target foo is built, build hook hook3 will be executed first, followed by hook1, and then finally hook2.

"},{"location":"config/build/#conditional-execution","title":"Conditional execution","text":"

If you want to disable a build hook by default and control its use by environment variables, you can do so by setting the enable-by-default option to false:

pyproject.toml hatch.toml 
[tool.hatch.build.hooks.<HOOK_NAME>]\nenable-by-default = false\n
[build.hooks.<HOOK_NAME>]\nenable-by-default = false\n
"},{"location":"config/build/#environment-variables","title":"Environment variables","text":"Variable Default Description HATCH_BUILD_CLEAN false Whether or not existing artifacts should first be removed HATCH_BUILD_CLEAN_HOOKS_AFTER false Whether or not build hook artifacts should be removed after each build HATCH_BUILD_HOOKS_ONLY false Whether or not to only execute build hooks HATCH_BUILD_NO_HOOKS false Whether or not to disable all build hooks; this takes precedence over other options HATCH_BUILD_HOOKS_ENABLE false Whether or not to enable all build hooks HATCH_BUILD_HOOK_ENABLE_<HOOK_NAME> false Whether or not to enable the build hook named <HOOK_NAME> HATCH_BUILD_LOCATION dist The location with which to build the targets; only used by the build command

  1. Support for PEP 517 and PEP 660 guarantees interoperability with other build tools.\u00a0\u21a9

"},{"location":"config/context/","title":"Context formatting","text":"

You can populate configuration with the values of certain supported fields using the syntax of Python's format strings. Each field interprets the modifier part after the colon differently, if at all.

"},{"location":"config/context/#global-fields","title":"Global fields","text":"

Any configuration that declares support for context formatting will always support these fields.

"},{"location":"config/context/#paths","title":"Paths","text":"Field Description root The root project directory home The user's home directory

All paths support the following modifiers:

Modifier Description uri The normalized absolute URI path prefixed by file: real The path with all symbolic links resolved parent The parent of the preceding path

Tip

The parent modifier can be chained and may be combined with either the uri or real modifier, with the latter placed at the end. For example:

pyproject.toml hatch.toml 
[tool.hatch.envs.test]\ndependencies = [\n    \"example-project @ {root:parent:parent:uri}/example-project\",\n]\n
[envs.test]\ndependencies = [\n    \"example-project @ {root:parent:parent:uri}/example-project\",\n]\n
"},{"location":"config/context/#system-separators","title":"System separators","text":"Field Description / \\ on Windows, / otherwise ; ; on Windows, : otherwise"},{"location":"config/context/#environment-variables","title":"Environment variables","text":"

The env field and its modifier allow you to select the value of an environment variable. If the environment variable is not set, you must specify a default value as an additional modifier e.g. {env:PATH:DEFAULT}.

"},{"location":"config/context/#field-nesting","title":"Field nesting","text":"

You can insert fields within others. For example, if you wanted a script that displays the value of the environment variable FOO, with a fallback to the environment variable BAR, with its own fallback to the user's home directory, you could do the following:

pyproject.toml hatch.toml 
[tool.hatch.envs.test.scripts]\ndisplay = \"echo {env:FOO:{env:BAR:{home}}}\"\n
[envs.test.scripts]\ndisplay = \"echo {env:FOO:{env:BAR:{home}}}\"\n
"},{"location":"config/dependency/","title":"Dependency configuration","text":"

Project dependencies are defined with PEP 508 strings using optional PEP 440 version specifiers.

"},{"location":"config/dependency/#version-specifiers","title":"Version specifiers","text":"

A version specifier consists of a series of version clauses, separated by commas. For example:

pyproject.toml 
[project]\n...\ndependencies = [\n  \"cryptography\",\n  \"click>=7, <9, != 8.0.0\",\n  \"python-dateutil==2.8.*\",\n  \"numpy~=1.21.4\",\n]\n

The comma is equivalent to a logical AND operator: a candidate version must match all given version clauses in order to match the specifier as a whole.

"},{"location":"config/dependency/#operators","title":"Operators","text":"Operators Function ~= Compatible release == Version matching != Version exclusion <=, >= Inclusive ordered comparison <, > Exclusive ordered comparison === Arbitrary equality"},{"location":"config/dependency/#version-matching","title":"Version matching","text":"

A version matching clause includes the version matching operator == and a version identifier.

By default, the version matching operator is based on a strict equality comparison: the specified version must be exactly the same as the requested version.

Clause Allowed versions ==1 1.0.0 ==1.2 1.2.0

Prefix matching may be requested instead of strict comparison, by appending a trailing .* to the version identifier in the version matching clause. This means that additional trailing segments will be ignored when determining whether or not a version identifier matches the clause.

Clause Allowed versions ==1.* >=1.0.0, <2.0.0 ==1.2.* >=1.2.0, <1.3.0"},{"location":"config/dependency/#compatible-release","title":"Compatible release","text":"

A compatible release clause consists of the compatible release operator ~= and a version identifier. It matches any candidate version that is expected to be compatible with the specified version.

For a given release identifier V.N, the compatible release clause is approximately equivalent to the following pair of comparison clauses:

>= V.N, == V.*\n

This operator cannot be used with a single segment version number such as ~=1.

Clause Allowed versions ~=1.2 >=1.2.0, <2.0.0 ~=1.2.3 >=1.2.3, <1.3.0"},{"location":"config/dependency/#version-exclusion","title":"Version exclusion","text":"

A version exclusion clause includes the version exclusion operator != and a version identifier.

The allowed version identifiers and comparison semantics are the same as those of the Version matching operator, except that the sense of any match is inverted.

"},{"location":"config/dependency/#ordered-comparison","title":"Ordered comparison","text":"

Inclusive comparisons allow for the version identifier part of clauses whereas exclusive comparisons do not. For example, >=1.2 allows for version 1.2.0 while >1.2 does not.

Unlike the inclusive ordered comparisons <= and >=, the exclusive ordered comparisons < and > specifically exclude pre-releases, post-releases, and local versions of the specified version.

"},{"location":"config/dependency/#arbitrary-equality","title":"Arbitrary equality","text":"

Though heavily discouraged, arbitrary equality comparisons allow for simple string matching without any version semantics, for example ===foobar.

"},{"location":"config/dependency/#environment-markers","title":"Environment markers","text":"

Environment markers allow for dependencies to only be installed when certain conditions are met.

For example, if you need to install the latest version of cryptography that is available for a given Python major version you could define the following:

cryptography==3.3.2; python_version < \"3\"\ncryptography>=35.0; python_version > \"3\"\n

Alternatively, if you only need it on Python 3 when running on Windows you could do:

cryptography; python_version ~= \"3.0\" and platform_system == \"Windows\"\n

The available environment markers are as follows.

Marker Python equivalent Examples os_name import osos.name sys_platform import syssys.platform platform_machine import platformplatform.machine() platform_python_implementation import platformplatform.python_implementation() platform_release import platformplatform.release() platform_system import platformplatform.system() platform_version import platformplatform.version() python_version import platform'.'.join(platform.python_version_tuple()[:2]) python_full_version import platformplatform.python_version() implementation_name import syssys.implementation.name implementation_version See here "},{"location":"config/dependency/#features","title":"Features","text":"

You can select groups of optional dependencies to install using the extras syntax. For example, if a dependency named foo defined the following:

pyproject.toml 
[project.optional-dependencies]\ncrypto = [\n  \"PyJWT\",\n  \"cryptography\",\n]\nfastjson = [\n  \"orjson\",\n]\ncli = [\n  \"prompt-toolkit\",\n  \"colorama; platform_system == 'Windows'\",\n]\n

You can select the cli and crypto features like so:

foo[cli,crypto]==1.*\n

Note that the features come immediately after the package name, before any version specifiers.

"},{"location":"config/dependency/#self-referential","title":"Self-referential","text":"

Feature groups can self-referentially extend others. For example, for a project called awesome-project, the dev feature group in the following pyproject.toml file would select everything in the crypto feature group, plus black:

pyproject.toml 
[project]\nname = \"awesome-project\"\n\n[project.optional-dependencies]\ncrypto = [\n  \"PyJWT\",\n  \"cryptography\",\n]\ndev = [\n  \"awesome-project[crypto]\",\n  \"black\",\n]\n
"},{"location":"config/dependency/#direct-references","title":"Direct references","text":"

Instead of using normal version specifiers and fetching packages from an index like PyPI, you can define exact sources using direct references with an explicit URI.

Direct references are usually not meant to be used for dependencies of a published project but rather are used for defining dependencies for an environment.

All direct reference types are prefixed by the package name like:

<NAME> @ <REFERENCE>\n
"},{"location":"config/dependency/#version-control-systems","title":"Version control systems","text":"

Various version control systems (VCS) are supported as long as the associated executable is available along your PATH.

VCS direct references are defined using one of the following formats:

<NAME> @ <SCHEME>://<PATH>\n<NAME> @ <SCHEME>://<PATH>@<REVISION>\n

You may also append a #subdirectory=<PATH> component for specifying the relative path to the Python package when it is not located at the root e.g. #subdirectory=lib/foo.

For more information, refer to this.

"},{"location":"config/dependency/#supported-vcs","title":"Supported VCS","text":"GitMercurialSubversionBazaar Executable Schemes Revisions Example git proj @ git+https://github.com/org/proj.git@v1 Executable Schemes Revisions Example hg proj @ hg+file:///path/to/proj@v1 Executable Schemes Revisions Example svn proj @ svn+file:///path/to/proj Executable Schemes Revisions Example bzr proj @ bzr+lp:proj@v1"},{"location":"config/dependency/#local","title":"Local","text":"

You can install local packages with the file scheme in the following format:

<NAME> @ file://<HOST>/<PATH>\n

The <HOST> is only used on Windows systems, where it can refer to a network share. If omitted it is assumed to be localhost and the third slash must still be present.

The <PATH> can refer to a source archive, a wheel, or a directory containing a Python package.

Type Unix Windows Source archive proj @ file:///path/to/pkg.tar.gz proj @ file:///c:/path/to/pkg.tar.gz Wheel proj @ file:///path/to/pkg.whl proj @ file:///c:/path/to/pkg.whl Directory proj @ file:///path/to/pkg proj @ file:///c:/path/to/pkg

Tip

You may also specify paths relative to your project's root directory on all platforms by using context formatting:

<NAME> @ {root:uri}/pkg_inside_project\n<NAME> @ {root:uri}/../pkg_alongside_project\n
"},{"location":"config/dependency/#remote","title":"Remote","text":"

You can install source archives and wheels by simply referring to a URL:

black @ https://github.com/psf/black/archive/refs/tags/21.10b0.zip\npytorch @ https://download.pytorch.org/whl/cu102/torch-1.10.0%2Bcu102-cp39-cp39-linux_x86_64.whl\n

An expected hash value may be specified by appending a #<HASH_ALGORITHM>=<EXPECTED_HASH> component:

requests @ https://github.com/psf/requests/archive/refs/tags/v2.26.0.zip#sha256=eb729a757f01c10546ebd179ae2aec852dd0d7f8ada2328ccf4558909d859985\n

If the hash differs from the expected hash, the installation will fail.

It is recommended that only hashes which are unconditionally provided by the latest version of the standard library's hashlib module be used for hashes. As of Python 3.10, that list consists of:

"},{"location":"config/dependency/#complex-syntax","title":"Complex syntax","text":"

The following is an example that uses features and environment markers:

pkg[feature1,feature2] @ <REFERENCE> ; python_version < \"3.7\"\n

Note that the space before the semicolon is required.

"},{"location":"config/hatch/","title":"Hatch configuration","text":"

Configuration for Hatch itself is stored in a config.toml file located by default in one of the following platform-specific directories.

Platform Path macOS ~/Library/Application Support/hatch Windows %USERPROFILE%\\AppData\\Local\\hatch Unix $XDG_CONFIG_HOME/hatch (the XDG_CONFIG_HOME environment variable default is ~/.config)

You can select a custom path to the file using the --config root option or by setting the HATCH_CONFIG environment variable.

The file can be managed by the config command group.

"},{"location":"config/hatch/#mode","title":"Mode","text":"

The mode key controls how Hatch selects the project to work on.

"},{"location":"config/hatch/#local","title":"Local","text":"config.toml 
mode = \"local\"\n

By default, Hatch will look for a pyproject.toml file in the current working directory and any parent directories. The directory storing the first found file will be considered the project root.

"},{"location":"config/hatch/#project","title":"Project","text":"config.toml 
mode = \"project\"\nproject = \"proj1\"\n\n[projects]\nproj1 = \"/path/to/project1\"\nproj2 = {\"location\": \"/path/to/project2\"}\n\n[dirs]\nproject = [\"/path/to/monorepo1\", \"/path/to/monorepo2\"]\n

In this mode, Hatch will only work on the selected project. The project is located using multiple heuristics:

  1. If the project is defined in the projects table then it must be a string, or an inline table with a location key, that is the full path to the project.
  2. If the project matches a subdirectory in any of the directories listed in dirs.project, then that will be used as the project root.

An error will occur if the project cannot be found.

You can use the config set command to change the project you are working on:

$ hatch config set project proj2\nNew setting:\nproject = \"proj2\"\n

The project can be selected on a per-command basis with the -p/--project (environment variable HATCH_PROJECT) root option.

"},{"location":"config/hatch/#aware","title":"Aware","text":"config.toml 
mode = \"aware\"\n

This is essentially the local mode with a fallback to the project mode.

"},{"location":"config/hatch/#shell","title":"Shell","text":"

You can control the shell used to enter environments with the shell key.

If defined as a string, it must be the name of one of the supported shells and be available along your PATH.

config.toml 
shell = \"fish\"\n

If the executable name of your shell differs from the supported name, you can define the shell as a table with name and path keys.

config.toml 
[shell]\nname = \"bash\"\npath = \"/bin/ash\"\n

You can change the default arguments used to spawn most shells with the args key. The default for such supported shells is usually [\"-i\"].

config.toml 
[shell]\nname = \"bash\"\nargs = [\"--login\"]\n
"},{"location":"config/hatch/#supported","title":"Supported","text":"Shell Name Arguments macOS Windows Unix Almquist shell ash [\"-i\"] Bash bash [\"-i\"] Command Prompt cmd C shell csh [\"-i\"] fish fish [\"-i\"] Nushell nu [] PowerShell pwsh, powershell tcsh tcsh [\"-i\"] xonsh xonsh [\"-i\"] Z shell zsh [\"-i\"]"},{"location":"config/hatch/#default","title":"Default","text":"

Hatch will attempt to use the current shell based on parent processes. If the shell cannot be determined, then on Windows systems Hatch will use the SHELL environment variable, if present, followed by the COMSPEC environment variable, defaulting to cmd. On all other platforms only the SHELL environment variable will be used, defaulting to bash.

"},{"location":"config/hatch/#directories","title":"Directories","text":""},{"location":"config/hatch/#data","title":"Data","text":"config.toml 
[dirs]\ndata = \"...\"\n

This is the directory that is used to persist data. By default it is set to one of the following platform-specific directories.

Platform Path macOS ~/Library/Application Support/hatch Windows %USERPROFILE%\\AppData\\Local\\hatch Unix $XDG_DATA_HOME/hatch (the XDG_DATA_HOME environment variable default is ~/.local/share)

You can select a custom path to the directory using the --data-dir root option or by setting the HATCH_DATA_DIR environment variable.

"},{"location":"config/hatch/#cache","title":"Cache","text":"config.toml 
[dirs]\ncache = \"...\"\n

This is the directory that is used to cache data. By default it is set to one of the following platform-specific directories.

Platform Path macOS ~/Library/Caches/hatch Windows %USERPROFILE%\\AppData\\Local\\hatch\\Cache Unix $XDG_CACHE_HOME/hatch (the XDG_CACHE_HOME environment variable default is ~/.cache)

You can select a custom path to the directory using the --cache-dir root option or by setting the HATCH_CACHE_DIR environment variable.

"},{"location":"config/hatch/#environments","title":"Environments","text":"config.toml 
[dirs.env]\n<ENV_TYPE> = \"...\"\n

This determines where to store environments, with every key being the type of environment and the value being the desired storage location.

For example, if you wanted to store virtual environments in a .virtualenvs directory within your home directory, you could specify the following:

config.toml 
[dirs.env]\nvirtual = \"~/.virtualenvs\"\n

Any environment variables are also expanded.

If the path is not absolute, then it will be relative to the project root. So if you wanted to use a directory named .hatch in each project directory, you could do:

config.toml 
[dirs.env]\nvirtual = \".hatch\"\n

Any type of environment that is not explicitly defined will default to <DATA_DIR>/env/<ENV_TYPE>.

"},{"location":"config/hatch/#python-installations","title":"Python installations","text":"config.toml 
[dirs]\npython = \"...\"\n

This determines where to install specific versions of Python.

The following values have special meanings:

Value Path isolated (default) <DATA_DIR>/pythons"},{"location":"config/hatch/#terminal","title":"Terminal","text":"

You can configure how all output is displayed using the terminal.styles table. These settings are also applied to all plugins.

config.toml 
[terminal.styles]\nerror = \"...\"\n...\n

Cross-platform terminal capabilities are provided by Rich.

"},{"location":"config/hatch/#output-levels","title":"Output levels","text":"

The levels of output are as follows. Note that the verbosity indicates the minimum level at which the output is displayed.

Level Default Verbosity Description debug bold 1 - 3 Messages that are not useful for most user experiences error bold red -2 Messages indicating some unrecoverable error info bold 0 Messages conveying basic information success bold cyan 0 Messages indicating some positive outcome waiting bold magenta 0 Messages shown before potentially time consuming operations warning bold yellow -1 Messages conveying important information

See the documentation and color reference for guidance on valid values.

"},{"location":"config/hatch/#spinner","title":"Spinner","text":"

You can select the sequence used for waiting animations with the spinner option.

config.toml 
[terminal.styles]\nspinner = \"...\"\n
"},{"location":"config/metadata/","title":"Project metadata","text":"

Project metadata is stored in a pyproject.toml file located at the root of a project's tree and is based entirely on the standard.

"},{"location":"config/metadata/#name","title":"Name (required)","text":"

The name of the project.

pyproject.toml 
[project]\nname = \"your-app\"\n
"},{"location":"config/metadata/#version","title":"Version (required)","text":"pyproject.toml DynamicStatic

See the dedicated versioning section.

[project]\n...\ndynamic = [\"version\"]\n\n[tool.hatch.version]\npath = \"...\"\n
[project]\n...\nversion = \"0.0.1\"\n
"},{"location":"config/metadata/#description","title":"Description","text":"

A brief summary of the project.

pyproject.toml 
[project]\n...\ndescription = '...'\n
"},{"location":"config/metadata/#readme","title":"Readme","text":"

The full description of the project.

pyproject.toml SimpleComplex

The file extension must be .md, .rst, or .txt.

[project]\n...\nreadme = \"README.md\"\n

The content-type field must be set to text/markdown, text/x-rst, or text/plain.

FileText

A charset field may also be set to instruct which encoding to use for reading the file, defaulting to utf-8.

[project]\n...\nreadme = {\"file\" = \"README.md\", \"content-type\" = \"text/markdown\"}\n

The content-type field must be set to text/markdown or text/x-rst.

[project]\n...\nreadme = {\"text\" = \"...\", \"content-type\" = \"text/markdown\"}\n

Note

If this is defined as a file, then it will always be included in source distributions for consistent builds.

"},{"location":"config/metadata/#python-support","title":"Python support","text":"

The Python version requirements of the project.

pyproject.toml 
[project]\n...\nrequires-python = \">=3.8\"\n
"},{"location":"config/metadata/#license","title":"License","text":"

For more information, see PEP 639.

pyproject.toml SPDX expressionFiles 
[project]\n...\nlicense = \"Apache-2.0 OR MIT\"\n
PathsGlobs 
[project]\n...\nlicense-files = { paths = [\"LICENSE.txt\"] }\n
[project]\n...\nlicense-files = { globs = [\"LICENSES/*\"] }\n
"},{"location":"config/metadata/#ownership","title":"Ownership","text":"

The people or organizations considered to be the authors or maintainers of the project. The exact meaning is open to interpretation; it may list the original or primary authors, current maintainers, or owners of the package. If the values are the same, prefer only the use of the authors field.

pyproject.toml 
[project]\n...\nauthors = [\n  { name = \"...\", email = \"...\" },\n]\nmaintainers = [\n  { name = \"...\", email = \"...\" },\n]\n
"},{"location":"config/metadata/#keywords","title":"Keywords","text":"

The keywords used to assist in the discovery of the project.

pyproject.toml 
[project]\n...\nkeywords = [\n  \"...\",\n]\n
"},{"location":"config/metadata/#classifiers","title":"Classifiers","text":"

The trove classifiers that apply to the project.

pyproject.toml 
[project]\n...\nclassifiers = [\n  \"...\",\n]\n
"},{"location":"config/metadata/#urls","title":"URLs","text":"

A table of URLs where the key is the URL label and the value is the URL itself.

pyproject.toml 
[project.urls]\nDocumentation = \"...\"\n\"Source code\" = \"...\"\n
"},{"location":"config/metadata/#dependencies","title":"Dependencies","text":"

See the dependency specification page for more information.

Entries support context formatting and disallow direct references by default.

"},{"location":"config/metadata/#required","title":"Required","text":"pyproject.toml 
[project]\n...\ndependencies = [\n  \"...\",\n]\n
"},{"location":"config/metadata/#optional","title":"Optional","text":"pyproject.toml 
[project.optional-dependencies]\noption1 = [\n  \"...\",\n]\noption2 = [\n  \"...\",\n]\n
"},{"location":"config/metadata/#entry-points","title":"Entry points","text":"

Entry points are a mechanism for the project to advertise components it provides to be discovered and used by other code.

"},{"location":"config/metadata/#cli","title":"CLI","text":"

After installing projects that define CLI scripts, each key will be available along your PATH as a command that will call its associated object.

pyproject.toml 
[project.scripts]\ncli-name = \"pkg.subpkg:func\"\n

Using the above example, running cli-name would essentially execute the following Python script:

import sys\n\nfrom pkg.subpkg import func\n\nsys.exit(func())\n
"},{"location":"config/metadata/#gui","title":"GUI","text":"

GUI scripts are exactly the same as CLI scripts except on Windows, where they are handled specially so that they can be started without a console.

pyproject.toml 
[project.gui-scripts]\ngui-name = \"pkg.subpkg:func\"\n
"},{"location":"config/metadata/#plugins","title":"Plugins","text":"pyproject.toml 
[project.entry-points.plugin-namespace]\nplugin-name1 = \"pkg.subpkg1\"\nplugin-name2 = \"pkg.subpkg2:func\"\n
"},{"location":"config/metadata/#dynamic","title":"Dynamic","text":"

If any metadata fields are set dynamically, like the version may be, then they must be listed here.

pyproject.toml 
[project]\n...\ndynamic = [\n  \"...\",\n]\n
"},{"location":"config/metadata/#metadata-options","title":"Metadata options","text":""},{"location":"config/metadata/#allowing-direct-references","title":"Allowing direct references","text":"

By default, dependencies are not allowed to define direct references. To disable this check, set allow-direct-references to true:

pyproject.toml hatch.toml 
[tool.hatch.metadata]\nallow-direct-references = true\n
[metadata]\nallow-direct-references = true\n
"},{"location":"config/metadata/#allowing-ambiguous-features","title":"Allowing ambiguous features","text":"

By default, names of optional dependencies are normalized to prevent ambiguity. To disable this normalization, set allow-ambiguous-features to true:

pyproject.toml hatch.toml 
[tool.hatch.metadata]\nallow-ambiguous-features = true\n
[metadata]\nallow-ambiguous-features = true\n

Deprecated

This option temporarily exists to provide better interoperability with tools that do not yet support PEP 685 and will be removed in the first minor release after Jan 1, 2024.

"},{"location":"config/project-templates/","title":"Project templates","text":"

You can control how new projects are created by the new command using Hatch's config file.

"},{"location":"config/project-templates/#author","title":"Author","text":"config.toml 
[template]\nname = \"...\"\nemail = \"...\"\n
"},{"location":"config/project-templates/#licenses","title":"Licenses","text":"config.toml 
[template.licenses]\nheaders = true\ndefault = [\n  \"MIT\",\n]\n

The list of licenses should be composed of SPDX identifiers. If multiple licenses are specified, then they will be placed in a LICENSES directory.

"},{"location":"config/project-templates/#options","title":"Options","text":""},{"location":"config/project-templates/#tests","title":"Tests","text":"

This adds a tests directory with environments for testing and linting.

config.toml 
[template.plugins.default]\ntests = true\n
"},{"location":"config/project-templates/#ci","title":"CI","text":"

This adds a GitHub Actions workflow that runs tests on all platforms using modern versions of Python.

config.toml 
[template.plugins.default]\nci = false\n
"},{"location":"config/project-templates/#src-layout","title":"src layout","text":"

See this blog post.

config.toml 
[template.plugins.default]\nsrc-layout = true\n
"},{"location":"config/project-templates/#feature-flags","title":"Feature flags","text":""},{"location":"config/project-templates/#command-line-interface","title":"Command line interface","text":"

The --cli flag adds a CLI backed by Click that can also be invoked with python -m <PKG_NAME>.

"},{"location":"config/static-analysis/","title":"Static analysis configuration","text":"

Static analysis performed by the fmt command is backed entirely by Ruff.

Hatch provides default settings that user configuration can extend.

"},{"location":"config/static-analysis/#extending-config","title":"Extending config","text":"

When defining your configuration, be sure to use options that are prefixed by extend- such as extend-select, for example:

pyproject.toml ruff.toml 
[tool.ruff.format]\npreview = true\nquote-style = \"single\"\n\n[tool.ruff.lint]\npreview = true\nextend-select = [\"C901\"]\n\n[tool.ruff.lint.extend-per-file-ignores]\n\"docs/.hooks/*\" = [\"INP001\", \"T201\"]\n\n[tool.ruff.lint.isort]\nknown-first-party = [\"foo\", \"bar\"]\n
[format]\npreview = true\nquote-style = \"single\"\n\n[lint]\npreview = true\nextend-select = [\"C901\"]\n\n[lint.extend-per-file-ignores]\n\"docs/.hooks/*\" = [\"INP001\", \"T201\"]\n\n[lint.isort]\nknown-first-party = [\"foo\", \"bar\"]\n

Note

When not persisting config, there is no need to explicitly extend the defaults as Hatch automatically handles that.

"},{"location":"config/static-analysis/#persistent-config","title":"Persistent config","text":"

If you want to store the default configuration in the project, set an explicit path like so:

pyproject.toml hatch.toml 
[tool.hatch.envs.hatch-static-analysis]\nconfig-path = \"ruff_defaults.toml\"\n
[envs.hatch-static-analysis]\nconfig-path = \"ruff_defaults.toml\"\n

Then instruct Ruff to consider your configuration as an extension of the default file:

pyproject.toml ruff.toml 
[tool.ruff]\nextend = \"ruff_defaults.toml\"\n
extend = \"ruff_defaults.toml\"\n

Anytime you wish to update the defaults (such as when upgrading Hatch), you must run the fmt command once with the --sync flag e.g.:

hatch fmt --check --sync\n

Tip

This is the recommended approach since it allows other tools like IDEs to use the default configuration.

"},{"location":"config/static-analysis/#versioning","title":"Versioning","text":"

You can pin the particular version of Ruff by explicitly defining the environment dependencies:

pyproject.toml hatch.toml 
[tool.hatch.envs.hatch-static-analysis]\ndependencies = [\"ruff==X.Y.Z\"]\n
[envs.hatch-static-analysis]\ndependencies = [\"ruff==X.Y.Z\"]\n
"},{"location":"config/static-analysis/#default-settings","title":"Default settings","text":""},{"location":"config/static-analysis/#non-rule-settings","title":"Non-rule settings","text":""},{"location":"config/static-analysis/#per-file-ignored-rules","title":"Per-file ignored rules","text":""},{"location":"config/static-analysis/#selected-rules","title":"Selected rules","text":"

The following rules are based on version 0.1.8 of Ruff. Rules with a P are only selected when preview mode is enabled.

"},{"location":"config/environment/advanced/","title":"Advanced environment configuration","text":""},{"location":"config/environment/advanced/#context-formatting","title":"Context formatting","text":"

All environments support the following extra context formatting fields:

Field Description env_name The name of the environment env_type The type of environment matrix Its modifier selects the value of that matrix variable. If the environment is not part of a matrix or was not generated with the variable, you must specify a default value as an additional modifier e.g. {matrix:version:v1.0.0}. verbosity The integer verbosity value of Hatch. A flag modifier is supported that will render the value as a CLI flag e.g. -2 becomes -qq, 1 becomes -v, and 0 becomes an empty string. An additional flag integer modifier may be used to adjust the verbosity level. For example, if you wanted to make a command quiet by default, you could use {verbosity:flag:-1} within the command. args For executed commands only, any extra command line arguments with an optional default modifier if none were provided"},{"location":"config/environment/advanced/#matrix","title":"Matrix","text":"

Environments can define a series of matrices with the matrix option:

pyproject.toml hatch.toml 
[tool.hatch.envs.test]\ndependencies = [\n  \"pytest\"\n]\n\n[[tool.hatch.envs.test.matrix]]\npython = [\"2.7\", \"3.8\"]\nversion = [\"42\", \"3.14\"]\n\n[[tool.hatch.envs.test.matrix]]\npython = [\"3.8\", \"3.9\"]\nversion = [\"9000\"]\nfeature = [\"foo\", \"bar\"]\n
[envs.test]\ndependencies = [\n  \"pytest\"\n]\n\n[[envs.test.matrix]]\npython = [\"2.7\", \"3.8\"]\nversion = [\"42\", \"3.14\"]\n\n[[envs.test.matrix]]\npython = [\"3.8\", \"3.9\"]\nversion = [\"9000\"]\nfeature = [\"foo\", \"bar\"]\n

Doing so will result in the product of each variable combination being its own environment.

"},{"location":"config/environment/advanced/#naming","title":"Naming","text":"

The name of the generated environments will be the variable values of each combination separated by hyphens, altogether prefixed by <ENV_NAME>.. For example, the following configuration:

pyproject.toml hatch.toml 
[[tool.hatch.envs.test.matrix]]\nversion = [\"42\"]\nfeature = [\"foo\", \"bar\"]\n
[[envs.test.matrix]]\nversion = [\"42\"]\nfeature = [\"foo\", \"bar\"]\n

would indicate the following unique environments:

test.42-foo\ntest.42-bar\n

The exceptions to this format are described below.

"},{"location":"config/environment/advanced/#python-variables","title":"Python variables","text":"

If the variables py or python are specified, then they will rank first in the product result and will be prefixed by py if the value is not. For example, the following configuration:

pyproject.toml hatch.toml 
[[tool.hatch.envs.test.matrix]]\nversion = [\"42\"]\npython = [\"3.9\", \"pypy3\"]\n
[[envs.test.matrix]]\nversion = [\"42\"]\npython = [\"3.9\", \"pypy3\"]\n

would generate the following environments:

test.py3.9-42\ntest.pypy3-42\n

Note

The value of this variable sets the Python version.

"},{"location":"config/environment/advanced/#name-formatting","title":"Name formatting","text":"

You can set the matrix-name-format option to modify how each variable part is formatted which recognizes the placeholders {variable} and {value}. For example, the following configuration:

pyproject.toml hatch.toml 
[tool.hatch.envs.test]\nmatrix-name-format = \"{variable}_{value}\"\n\n[[tool.hatch.envs.test.matrix]]\nversion = [\"42\"]\nfeature = [\"foo\", \"bar\"]\n
[envs.test]\nmatrix-name-format = \"{variable}_{value}\"\n\n[[envs.test.matrix]]\nversion = [\"42\"]\nfeature = [\"foo\", \"bar\"]\n

would produce the following environments:

test.version_42-feature_foo\ntest.version_42-feature_bar\n

By default this option is set to {value}.

"},{"location":"config/environment/advanced/#default-environment","title":"Default environment","text":"

If the default environment defines matrices, then the generated names will not be prefixed by the environment name. This can be useful for projects that only need a single series of matrices without any standalone environments.

"},{"location":"config/environment/advanced/#selection","title":"Selection","text":"

Rather than selecting a single generated environment, you can select the root environment to target all of them. For example, if you have the following configuration:

pyproject.toml hatch.toml 
[tool.hatch.envs.test]\ndependencies = [\n  \"coverage[toml]\",\n  \"pytest\",\n  \"pytest-cov\",\n]\n\n[tool.hatch.envs.test.scripts]\ncov = 'pytest --cov-report=term-missing --cov-config=pyproject.toml --cov=pkg --cov=tests'\n\n[[tool.hatch.envs.test.matrix]]\npython = [\"2.7\", \"3.8\"]\nversion = [\"42\", \"3.14\"]\n
[envs.test]\ndependencies = [\n  \"coverage[toml]\",\n  \"pytest\",\n  \"pytest-cov\",\n]\n\n[envs.test.scripts]\ncov = 'pytest --cov-report=term-missing --cov-config=pyproject.toml --cov=pkg --cov=tests'\n\n[[envs.test.matrix]]\npython = [\"2.7\", \"3.8\"]\nversion = [\"42\", \"3.14\"]\n

you could then run your tests consecutively in all 4 environments with:

hatch run test:cov\n
"},{"location":"config/environment/advanced/#option-overrides","title":"Option overrides","text":"

You can modify options based on the conditions of different sources like matrix variables with the overrides table, using dotted key syntax for each declaration:

pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>.overrides]\n<SOURCE>.<CONDITION>.<OPTION> = <VALUE>\n
[envs.<ENV_NAME>.overrides]\n<SOURCE>.<CONDITION>.<OPTION> = <VALUE>\n

The type of the selected option determines the types of values.

"},{"location":"config/environment/advanced/#platform-overrides","title":"Platform overrides","text":"

Options can be modified based on the current platform using the platform source.

pyproject.toml hatch.toml 
[tool.hatch.envs.test.overrides]\nplatform.windows.scripts = [\n  'run=pytest -m \"not io_uring\"',\n]\n
[envs.test.overrides]\nplatform.windows.scripts = [\n  'run=pytest -m \"not io_uring\"',\n]\n

The following platforms are supported:

"},{"location":"config/environment/advanced/#environment-variable-overrides","title":"Environment variable overrides","text":"

Environment variables can modify options using the env source.

pyproject.toml hatch.toml 
[tool.hatch.envs.test.overrides]\nenv.GITHUB_ACTIONS.dev-mode = { value = false, if = [\"true\"] }\n
[envs.test.overrides]\nenv.GITHUB_ACTIONS.dev-mode = { value = false, if = [\"true\"] }\n
"},{"location":"config/environment/advanced/#matrix-variable-overrides","title":"Matrix variable overrides","text":"

The matrix variables used to generate each environment can be used to modify options within using the matrix source.

pyproject.toml hatch.toml 
[tool.hatch.envs.test.overrides]\nmatrix.version.env-vars = \"PRODUCT_VERSION\"\nmatrix.auth.features = [\n  { value = \"oauth\", if = [\"oauth2\"] },\n  { value = \"kerberos\", if = [\"kerberos\"] },\n]\n\n[[tool.hatch.envs.test.matrix]]\npython = [\"2.7\", \"3.8\"]\nversion = [\"legacy\", \"latest\"]\nauth = [\"oauth2\", \"kerberos\", \"noauth\"]\n
[envs.test.overrides]\nmatrix.version.env-vars = \"PRODUCT_VERSION\"\nmatrix.auth.features = [\n  { value = \"oauth\", if = [\"oauth2\"] },\n  { value = \"kerberos\", if = [\"kerberos\"] },\n]\n\n[[envs.test.matrix]]\npython = [\"2.7\", \"3.8\"]\nversion = [\"legacy\", \"latest\"]\nauth = [\"oauth2\", \"kerberos\", \"noauth\"]\n
"},{"location":"config/environment/advanced/#name-overrides","title":"Name overrides","text":"

When a matrix is defined, the name source can be used for regular expression matching on the generated name, minus the prefix for non-default environments.

pyproject.toml hatch.toml 
[tool.hatch.envs.test.overrides]\nname.\"^0\".env-vars = \"TESTING_UNSTABLE=true\"\n\n[[tool.hatch.envs.test.matrix]]\nversion = [\"0.1.0\", \"0.2.0\", \"1.0.0\"]\n
[envs.test.overrides]\nname.\"^0\".env-vars = \"TESTING_UNSTABLE=true\"\n\n[[envs.test.matrix]]\nversion = [\"0.1.0\", \"0.2.0\", \"1.0.0\"]\n
"},{"location":"config/environment/advanced/#types","title":"Types","text":""},{"location":"config/environment/advanced/#overwriting","title":"Overwriting","text":"

Rather than supplementing the values within mapping types or array types, you can overwrite the option as a whole by prefixing the name with set-:

pyproject.toml hatch.toml 
[tool.hatch.envs.test.overrides]\nmatrix.foo.set-platforms = [\"macos\", \"linux\"]\n
[envs.test.overrides]\nmatrix.foo.set-platforms = [\"macos\", \"linux\"]\n

When overwriting entire options or keys within mappings, override sources are applied in the following order:

  1. platform
  2. environment variables
  3. matrix variables
  4. names
"},{"location":"config/environment/advanced/#conditions","title":"Conditions","text":"

You may specify certain extra keys for any inline table that will determine whether or not to apply that entry. These modifiers may be combined with others and any negative evaluation will immediately cause the entry to be skipped.

"},{"location":"config/environment/advanced/#allowed-values","title":"Allowed values","text":"

The if key represents the allowed values for that condition. If the value of the condition is not listed, then that entry will not be applied:

pyproject.toml hatch.toml 
[tool.hatch.envs.test.overrides]\nmatrix.version.python = { value = \"pypy\", if = [\"3.14\"] }\nmatrix.version.env-vars = [\n  { key = \"KEY1\", value = \"VALUE1\", if = [\"42\"] },\n  { key = \"KEY2\", value = \"VALUE2\", if = [\"3.14\"] },\n]\n\n[[tool.hatch.envs.test.matrix]]\nversion = [\"42\", \"3.14\"]\n
[envs.test.overrides]\nmatrix.version.python = { value = \"pypy\", if = [\"3.14\"] }\nmatrix.version.env-vars = [\n  { key = \"KEY1\", value = \"VALUE1\", if = [\"42\"] },\n  { key = \"KEY2\", value = \"VALUE2\", if = [\"3.14\"] },\n]\n\n[[envs.test.matrix]]\nversion = [\"42\", \"3.14\"]\n
"},{"location":"config/environment/advanced/#specific-platforms","title":"Specific platforms","text":"

The platform key represents the desired platforms. If the current platform is not listed, then that entry will not be applied:

pyproject.toml hatch.toml 
[tool.hatch.envs.test.overrides]\nenv.EXPERIMENTAL.python = { value = \"pypy\", if = [\"1\"], platform = [\"macos\"] }\nmatrix.version.env-vars = [\n  { key = \"KEY1\", value = \"VALUE1\", if = [\"42\"], platform = [\"linux\"] },\n  { key = \"KEY2\", value = \"VALUE2\", if = [\"3.14\"] },\n]\n\n[[tool.hatch.envs.test.matrix]]\nversion = [\"42\", \"3.14\"]\n
[envs.test.overrides]\nenv.EXPERIMENTAL.python = { value = \"pypy\", if = [\"1\"], platform = [\"macos\"] }\nmatrix.version.env-vars = [\n  { key = \"KEY1\", value = \"VALUE1\", if = [\"42\"], platform = [\"linux\"] },\n  { key = \"KEY2\", value = \"VALUE2\", if = [\"3.14\"] },\n]\n\n[[envs.test.matrix]]\nversion = [\"42\", \"3.14\"]\n
"},{"location":"config/environment/advanced/#required-environment-variables","title":"Required environment variables","text":"

The env key represents the required environment variables. If any of the listed environment variables are not set or the defined value does not match, then that entry will not be applied:

pyproject.toml hatch.toml 
[tool.hatch.envs.test.overrides]\nplatform.windows.python = { value = \"pypy\", env = [\"EXPERIMENTAL\"] }\nmatrix.version.env-vars = [\n  { key = \"KEY1\", value = \"VALUE1\", if = [\"42\"], env = [\"FOO\", \"BAR=BAZ\"] },\n  { key = \"KEY2\", value = \"VALUE2\", if = [\"3.14\"] },\n]\n\n[[tool.hatch.envs.test.matrix]]\nversion = [\"42\", \"3.14\"]\n
[envs.test.overrides]\nplatform.windows.python = { value = \"pypy\", env = [\"EXPERIMENTAL\"] }\nmatrix.version.env-vars = [\n  { key = \"KEY1\", value = \"VALUE1\", if = [\"42\"], env = [\"FOO\", \"BAR=BAZ\"] },\n  { key = \"KEY2\", value = \"VALUE2\", if = [\"3.14\"] },\n]\n\n[[envs.test.matrix]]\nversion = [\"42\", \"3.14\"]\n
"},{"location":"config/environment/overview/","title":"Environment configuration","text":"

All environments are defined as sections within the tool.hatch.envs table.

pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\n
[envs.<ENV_NAME>]\n

The storage location for environments is completely configurable.

Unless an environment is explicitly selected on the command line, the default environment will be used. The type of this environment defaults to virtual.

Info

Environments prefixed by hatch- are used for special purposes e.g. static analysis.

"},{"location":"config/environment/overview/#inheritance","title":"Inheritance","text":"

All environments inherit from the environment defined by its template option, which defaults to default.

So for the following configuration:

pyproject.toml hatch.toml 
[tool.hatch.envs.foo]\ntype = \"baz\"\nskip-install = true\n\n[tool.hatch.envs.bar]\ntemplate = \"foo\"\nskip-install = false\n
[envs.foo]\ntype = \"baz\"\nskip-install = true\n\n[envs.bar]\ntemplate = \"foo\"\nskip-install = false\n

the environment bar will be of type baz with skip-install set to false.

Note

Environments do not inherit matrices.

"},{"location":"config/environment/overview/#self-referential-environments","title":"Self-referential environments","text":"

You can disable inheritance by setting template to the environment's own name:

pyproject.toml hatch.toml 
[tool.hatch.envs.foo]\ntemplate = \"foo\"\n
[envs.foo]\ntemplate = \"foo\"\n
"},{"location":"config/environment/overview/#detached-environments","title":"Detached environments","text":"

A common use case is standalone environments that do not require inheritance nor the installation of the project, such as for linting or sometimes building documentation. Enabling the detached option will make the environment self-referential and will skip project installation:

pyproject.toml hatch.toml 
[tool.hatch.envs.lint]\ndetached = true\n
[envs.lint]\ndetached = true\n
"},{"location":"config/environment/overview/#dependencies","title":"Dependencies","text":"

You can install dependencies in addition to the ones defined by your project's metadata. Entries support context formatting.

pyproject.toml hatch.toml 
[tool.hatch.envs.test]\ndependencies = [\n  \"coverage[toml]\",\n  \"pytest\",\n  \"pytest-cov\",\n  \"pytest-mock\",\n]\n
[envs.test]\ndependencies = [\n  \"coverage[toml]\",\n  \"pytest\",\n  \"pytest-cov\",\n  \"pytest-mock\",\n]\n

If you define environments with dependencies that only slightly differ from their inherited environments, you can use the extra-dependencies option to avoid redeclaring the dependencies option:

pyproject.toml hatch.toml 
[tool.hatch.envs.default]\ndependencies = [\n  \"foo\",\n  \"bar\",\n]\n\n[tool.hatch.envs.experimental]\nextra-dependencies = [\n  \"baz\",\n]\n
[envs.default]\ndependencies = [\n  \"foo\",\n  \"bar\",\n]\n\n[envs.experimental]\nextra-dependencies = [\n  \"baz\",\n]\n

Tip

Hatch uses pip to install dependencies so any configuration it supports Hatch does as well. For example, if you wanted to only use a private repository you could set the PIP_INDEX_URL environment variable.

"},{"location":"config/environment/overview/#installation","title":"Installation","text":""},{"location":"config/environment/overview/#features","title":"Features (extras)","text":"

If your project defines optional dependencies, you can select which groups to install using the features option:

pyproject.toml hatch.toml 
[tool.hatch.envs.nightly]\nfeatures = [\n  \"server\",\n  \"grpc\",\n]\n
[envs.nightly]\nfeatures = [\n  \"server\",\n  \"grpc\",\n]\n

Note

Features/optional dependencies are also known as extras in other tools.

"},{"location":"config/environment/overview/#dev-mode","title":"Dev mode","text":"

By default, environments will always reflect the current state of your project on disk. Set dev-mode to false to disable this behavior:

pyproject.toml hatch.toml 
[tool.hatch.envs.static]\ndev-mode = false\n
[envs.static]\ndev-mode = false\n
"},{"location":"config/environment/overview/#skip-install","title":"Skip install","text":"

By default, environments will install your project during creation. To ignore this step, set skip-install to true:

pyproject.toml hatch.toml 
[tool.hatch.envs.lint]\nskip-install = true\n
[envs.lint]\nskip-install = true\n
"},{"location":"config/environment/overview/#environment-variables","title":"Environment variables","text":""},{"location":"config/environment/overview/#defined","title":"Defined","text":"

You can define environment variables with the env-vars option:

pyproject.toml hatch.toml 
[tool.hatch.envs.docs]\ndependencies = [\n  \"mkdocs\"\n]\n[tool.hatch.envs.docs.env-vars]\nSOURCE_DATE_EPOCH = \"1580601600\"\n
[envs.docs]\ndependencies = [\n  \"mkdocs\"\n]\n[envs.docs.env-vars]\nSOURCE_DATE_EPOCH = \"1580601600\"\n

Values support context formatting.

"},{"location":"config/environment/overview/#filters","title":"Filters","text":"

By default, environments will have access to all environment variables. You can filter with wildcard patterns using the env-include/env-exclude options:

pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\nenv-include = [\n  \"FOO*\",\n]\nenv-exclude = [\n  \"BAR\",\n]\n
[envs.<ENV_NAME>]\nenv-include = [\n  \"FOO*\",\n]\nenv-exclude = [\n  \"BAR\",\n]\n

Exclusion patterns take precedence but will never affect defined environment variables.

"},{"location":"config/environment/overview/#scripts","title":"Scripts","text":"

You can define named scripts that may be executed or referenced at the beginning of other scripts. Context formatting is supported.

For example, in the following configuration:

pyproject.toml hatch.toml 
[tool.hatch.envs.test]\ndependencies = [\n  \"coverage[toml]\",\n  \"pytest\",\n  \"pytest-cov\",\n  \"pytest-mock\",\n]\n[tool.hatch.envs.test.scripts]\nrun-coverage = \"pytest --cov-config=pyproject.toml --cov=pkg --cov=tests\"\nrun = \"run-coverage --no-cov\"\n
[envs.test]\ndependencies = [\n  \"coverage[toml]\",\n  \"pytest\",\n  \"pytest-cov\",\n  \"pytest-mock\",\n]\n[envs.test.scripts]\nrun-coverage = \"pytest --cov-config=pyproject.toml --cov=pkg --cov=tests\"\nrun = \"run-coverage --no-cov\"\n

the run script would be expanded to:

pytest --cov-config=pyproject.toml --cov=pkg --cov=tests --no-cov\n

Scripts can also be defined as an array of strings.

pyproject.toml hatch.toml 
[tool.hatch.envs.style]\ndetached = true\ndependencies = [\n  \"flake8\",\n  \"black\",\n  \"isort\",\n]\n[tool.hatch.envs.style.scripts]\ncheck = [\n  \"flake8 .\",\n  \"black --check --diff .\",\n  \"isort --check-only --diff .\",\n]\nfmt = [\n  \"isort .\",\n  \"black .\",\n  \"check\",\n]\n
[envs.style]\ndetached = true\ndependencies = [\n  \"flake8\",\n  \"black\",\n  \"isort\",\n]\n[envs.style.scripts]\ncheck = [\n  \"flake8 .\",\n  \"black --check --diff .\",\n  \"isort --check-only --diff .\",\n]\nfmt = [\n  \"isort .\",\n  \"black .\",\n  \"check\",\n]\n

Similar to make, you can ignore the exit code of commands that start with - (a hyphen). For example, the script error defined by the following configuration would halt after the second command with 3 as the exit code:

pyproject.toml hatch.toml 
[tool.hatch.envs.test.scripts]\nerror = [\n  \"- exit 1\",\n  \"exit 3\",\n  \"exit 0\",\n]\n
[envs.test.scripts]\nerror = [\n  \"- exit 1\",\n  \"exit 3\",\n  \"exit 0\",\n]\n

Tip

Individual scripts inherit from parent environments just like options.

"},{"location":"config/environment/overview/#commands","title":"Commands","text":"

All commands are able to use any defined scripts. Also like scripts, context formatting is supported and the exit code of commands that start with a hyphen will be ignored.

"},{"location":"config/environment/overview/#pre-install","title":"Pre-install","text":"

You can run commands immediately before environments install your project.

pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\npre-install-commands = [\n  \"...\",\n]\n
[envs.<ENV_NAME>]\npre-install-commands = [\n  \"...\",\n]\n
"},{"location":"config/environment/overview/#post-install","title":"Post-install","text":"

You can run commands immediately after environments install your project.

pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\npost-install-commands = [\n  \"...\",\n]\n
[envs.<ENV_NAME>]\npost-install-commands = [\n  \"...\",\n]\n
"},{"location":"config/environment/overview/#python-version","title":"Python version","text":"

The python option specifies which version of Python to use, or an absolute path to a Python interpreter:

pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\npython = \"3.10\"\n
[envs.<ENV_NAME>]\npython = \"3.10\"\n

All environment types should respect this option.

"},{"location":"config/environment/overview/#supported-platforms","title":"Supported platforms","text":"

The platforms option indicates the operating systems with which the environment is compatible:

pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\nplatforms = [\"linux\", \"windows\", \"macos\"]\n
[envs.<ENV_NAME>]\nplatforms = [\"linux\", \"windows\", \"macos\"]\n

The following platforms are supported:

If unspecified, the environment is assumed to be compatible with all platforms.

"},{"location":"config/environment/overview/#description","title":"Description","text":"

The description option is purely informational and is displayed in the output of the env show command:

pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\ndescription = \"\"\"\nLorem ipsum ...\n\"\"\"\n
[envs.<ENV_NAME>]\ndescription = \"\"\"\nLorem ipsum ...\n\"\"\"\n
"},{"location":"config/environment/overview/#type","title":"Type","text":"

An environment's type determines which environment plugin will be used for management. The only built-in environment type is virtual, which uses virtual Python environments.

"},{"location":"history/hatch/","title":"Hatch history","text":"

All notable changes to Hatch will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

"},{"location":"history/hatch/#unreleased","title":"Unreleased","text":""},{"location":"history/hatch/#hatch-v1.9.6","title":"1.9.6 - 2024-04-24","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.9.4","title":"1.9.4 - 2024-03-12","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.9.3","title":"1.9.3 - 2024-01-25","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.9.2","title":"1.9.2 - 2024-01-21","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.9.1","title":"1.9.1 - 2023-12-25","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.9.0","title":"1.9.0 - 2023-12-19","text":"

Changed:

Added:

Fixed:

"},{"location":"history/hatch/#hatch-v1.8.1","title":"1.8.1 - 2023-12-14","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.8.0","title":"1.8.0 - 2023-12-11","text":"

Changed:

Added:

Fixed:

"},{"location":"history/hatch/#hatch-v1.7.0","title":"1.7.0 - 2023-04-03","text":"

Changed:

Added:

Fixed:

"},{"location":"history/hatch/#hatch-v1.6.3","title":"1.6.3 - 2022-10-24","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.6.2","title":"1.6.2 - 2022-10-20","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.6.1","title":"1.6.1 - 2022-10-16","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.6.0","title":"1.6.0 - 2022-10-08","text":"

Changed:

Added:

Fixed:

"},{"location":"history/hatch/#hatch-v1.5.0","title":"1.5.0 - 2022-08-28","text":"

Added:

Fixed:

"},{"location":"history/hatch/#hatch-v1.4.2","title":"1.4.2 - 2022-08-16","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.4.1","title":"1.4.1 - 2022-08-13","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.4.0","title":"1.4.0 - 2022-08-06","text":"

Added:

Fixed:

"},{"location":"history/hatch/#hatch-v1.3.1","title":"1.3.1 - 2022-07-11","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.3.0","title":"1.3.0 - 2022-07-10","text":"

Changed:

Added:

Fixed:

"},{"location":"history/hatch/#hatch-v1.2.1","title":"1.2.1 - 2022-05-30","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.2.0","title":"1.2.0 - 2022-05-22","text":"

Changed:

Added:

Fixed:

"},{"location":"history/hatch/#hatch-v1.1.2","title":"1.1.2 - 2022-05-20","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.1.1","title":"1.1.1 - 2022-05-12","text":"

Fixed:

"},{"location":"history/hatch/#hatch-v1.1.0","title":"1.1.0 - 2022-05-12","text":"

Changed:

Added:

"},{"location":"history/hatch/#hatch-v1.0.0","title":"1.0.0 - 2022-04-28","text":"

This is the first stable release of Hatch v1, a complete rewrite. Enjoy!

"},{"location":"history/hatchling/","title":"Hatchling history","text":"

All notable changes to Hatchling will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

"},{"location":"history/hatchling/#unreleased","title":"Unreleased","text":""},{"location":"history/hatchling/#hatchling-v1.21.0","title":"1.21.0 - 2023-12-18","text":"

Added:

"},{"location":"history/hatchling/#hatchling-v1.20.0","title":"1.20.0 - 2023-12-13","text":"

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.19.1","title":"1.19.1 - 2023-12-12","text":"

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.19.0","title":"1.19.0 - 2023-12-11","text":"

Changed:

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.18.0","title":"1.18.0 - 2023-06-12","text":"

Changed:

Added:

"},{"location":"history/hatchling/#hatchling-v1.17.1","title":"1.17.1 - 2023-06-03","text":"

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.17.0","title":"1.17.0 - 2023-05-12","text":"

Added:

"},{"location":"history/hatchling/#hatchling-v1.16.1","title":"1.16.1 - 2023-05-11","text":"

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.16.0","title":"1.16.0 - 2023-05-11","text":"

Added:

"},{"location":"history/hatchling/#hatchling-v1.15.0","title":"1.15.0 - 2023-05-09","text":"

Added:

"},{"location":"history/hatchling/#hatchling-v1.14.1","title":"1.14.1 - 2023-04-23","text":"

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.14.0","title":"1.14.0 - 2023-04-02","text":"

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.13.0","title":"1.13.0 - 2023-02-09","text":"

Added:

"},{"location":"history/hatchling/#hatchling-v1.12.2","title":"1.12.2 - 2023-01-05","text":"

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.12.1","title":"1.12.1 - 2022-12-31","text":"

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.12.0","title":"1.12.0 - 2022-12-30","text":"

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.11.1","title":"1.11.1 - 2022-10-19","text":"

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.11.0","title":"1.11.0 - 2022-10-08","text":"

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.10.0","title":"1.10.0 - 2022-09-18","text":"

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.9.0","title":"1.9.0 - 2022-09-09","text":"

Changed:

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.8.1","title":"1.8.1 - 2022-08-25","text":"

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.8.0","title":"1.8.0 - 2022-08-16","text":"

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.7.1","title":"1.7.1 - 2022-08-13","text":"

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.7.0","title":"1.7.0 - 2022-08-12","text":"

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.6.0","title":"1.6.0 - 2022-07-23","text":"

Changed:

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.5.0","title":"1.5.0 - 2022-07-11","text":"

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.4.1","title":"1.4.1 - 2022-07-04","text":"

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.4.0","title":"1.4.0 - 2022-07-03","text":"

Changed:

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.3.1","title":"1.3.1 - 2022-05-30","text":"

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.3.0","title":"1.3.0 - 2022-05-22","text":"

Removed:

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v1.2.0","title":"1.2.0 - 2022-05-20","text":"

Added:

"},{"location":"history/hatchling/#hatchling-v1.1.0","title":"1.1.0 - 2022-05-19","text":"

Added:

"},{"location":"history/hatchling/#hatchling-v1.0.0","title":"1.0.0 - 2022-05-17","text":"

Changed:

Added:

"},{"location":"history/hatchling/#hatchling-v0.25.1","title":"0.25.1 - 2022-06-14","text":"

Fixed:

"},{"location":"history/hatchling/#hatchling-v0.25.0","title":"0.25.0 - 2022-05-15","text":"

Added:

Fixed:

"},{"location":"history/hatchling/#hatchling-v0.24.0","title":"0.24.0 - 2022-04-28","text":"

This is the initial public release of the Hatchling build system. Support for Python 2 will be dropped in version 1.

"},{"location":"how-to/environment/package-indices/","title":"Package indices","text":"

Most Hatch environment types, like the default virtual, simply use pip to install dependencies. Therefore, you can use the standard environment variables that influence pip's behavior to choose where to search for packages.

Here's an example of setting up the default environment to look at 2 private indices (using context formatting for authentication) before finally falling back to PyPI:

pyproject.toml hatch.toml 
[tool.hatch.envs.default.env-vars]\nPIP_INDEX_URL = \"https://token:{env:GITLAB_API_TOKEN}@gitlab.com/api/v4/groups/<group1_path>/-/packages/pypi/simple/\"\nPIP_EXTRA_INDEX_URL = \"https://token:{env:GITLAB_API_TOKEN}@gitlab.com/api/v4/groups/<group2_path>/-/packages/pypi/simple/ https://pypi.org/simple/\"\n
[envs.default.env-vars]\nPIP_INDEX_URL = \"https://token:{env:GITLAB_API_TOKEN}@gitlab.com/api/v4/groups/<group1_path>/-/packages/pypi/simple/\"\nPIP_EXTRA_INDEX_URL = \"https://token:{env:GITLAB_API_TOKEN}@gitlab.com/api/v4/groups/<group2_path>/-/packages/pypi/simple/ https://pypi.org/simple/\"\n
"},{"location":"how-to/plugins/testing-builds/","title":"Testing builds","text":"

For testing Hatchling plugins, you'll usually want to generate a project to execute builds as a real user would. For example, as a minimal pytest fixture:

from pathlib import Path\n\nimport pytest\n\n\n@pytest.fixture\ndef new_project(tmp_path):\n    project_dir = tmp_path / 'my-app'\n    project_dir.mkdir()\n\n    project_file = project_dir / 'pyproject.toml'\n    project_file.write_text(\n        f\"\"\"\\\n[build-system]\nrequires = [\"hatchling\", \"hatch-plugin-name @ {Path.cwd().as_uri()}\"]\nbuild-backend = \"hatchling.build\"\n\n[project]\nname = \"my-app\"\nversion = \"0.1.0\"\n\"\"\",\n        encoding='utf-8',\n    )\n    ...\n

The issue with this is that after the first test session, the project will be forever cached by pip based on the file path. Therefore, subsequent tests runs will never use updated code.

To invalidate the cache, copy your code to a new path for every test session:

import shutil\nfrom pathlib import Path\nfrom tempfile import TemporaryDirectory\n\nimport pytest\n\n\n@pytest.fixture(scope='session')\ndef plugin_dir():\n    with TemporaryDirectory() as d:\n        directory = Path(d, 'plugin')\n        shutil.copytree(\n            Path.cwd(), directory, ignore=shutil.ignore_patterns('.git')\n        )\n\n        yield directory.resolve()\n\n\n@pytest.fixture\ndef new_project(tmp_path, plugin_dir):\n    project_dir = tmp_path / 'my-app'\n    project_dir.mkdir()\n\n    project_file = project_dir / 'pyproject.toml'\n    project_file.write_text(\n        f\"\"\"\\\n[build-system]\nrequires = [\"hatchling\", \"hatch-plugin-name @ {plugin_dir.as_uri()}\"]\nbuild-backend = \"hatchling.build\"\n\n[project]\nname = \"my-app\"\nversion = \"0.1.0\"\n\"\"\",\n        encoding='utf-8',\n    )\n    ...\n

Note

This example chooses to ignore copying .git for performance reasons. You may want to ignore more patterns, or copy only specific paths like this plugin does.

"},{"location":"meta/authors/","title":"Authors","text":""},{"location":"meta/authors/#maintainers","title":"Maintainers","text":""},{"location":"meta/authors/#contributors","title":"Contributors","text":""},{"location":"meta/faq/","title":"FAQ","text":""},{"location":"meta/faq/#interoperability","title":"Interoperability","text":"

Q: What is the risk of lock-in?

A: Not much! Other than the plugin system, everything uses Python's established standards by default. Project metadata is based entirely on the standard, the build system is compatible with PEP 517/PEP 660, versioning uses the scheme specified by PEP 440, dependencies are defined with PEP 508 strings, and environments use virtualenv.

Q: Must one use all features?

A: No, all features are optional! You can use just the build system, publish wheels and source distributions that were built by other tools, only use the environment management, etc.

"},{"location":"meta/faq/#libraries-vs-applications","title":"Libraries vs applications","text":"

Q: Are workflows for both libraries and applications supported?

A: Yes, mostly! Applications can utilize environment management just like libraries, and plugins can be used to build projects in arbitrary formats or publish artifacts to arbitrary destinations.

The only caveat is that currently there is no support for re-creating an environment given a set of dependencies in a reproducible manner. Although a standard lock file format may be far off since [PEP 665][] was rejected, resolving capabilities are coming to pip. When that is stabilized, Hatch will add locking functionality and dedicated documentation for managing applications.

"},{"location":"meta/faq/#tool-migration","title":"Tool migration","text":"

Q: How to migrate to Hatch?

"},{"location":"meta/faq/#build-system","title":"Build system","text":"SetuptoolsHatch setup.py MANIFEST.in 
import os\nfrom io import open\n\nfrom setuptools import find_packages, setup\n\nabout = {}\nwith open(os.path.join('src', 'foo', '__about__.py'), 'r', 'utf-8') as f:\n    exec(f.read(), about)\n\nwith open('README.md', 'r', 'utf-8') as f:\n    readme = f.read()\n\nsetup(\n    # Metadata\n    name='foo',\n    version=about['__version__'],\n    description='...',\n    long_description=readme,\n    long_description_content_type='text/markdown',\n    author='...',\n    author_email='...',\n    project_urls={\n        'Documentation': '...',\n        'Source': '...',\n    },\n    classifiers=[\n        '...',\n    ],\n    keywords=[\n        '...',\n    ],\n    python_requires='>=3.8',\n    install_requires=[\n        '...',\n    ],\n    extras_require={\n        'feature': ['...'],\n    },\n\n    # Packaging\n    packages=find_packages(where='src'),\n    package_dir={'': 'src'},\n    package_data={\n        'foo': ['py.typed'],\n    },\n    zip_safe=False,\n    entry_points={\n        'console_scripts': [\n            'foo = foo.cli:main',\n        ],\n    },\n)\n
graft tests\n\nglobal-exclude *.py[cod] __pycache__\n
pyproject.toml 
[build-system]\nrequires = [\"hatchling\"]\nbuild-backend = \"hatchling.build\"\n\n[project]\nname = \"foo\"\ndescription = \"...\"\nreadme = \"README.md\"\nauthors = [\n  { name = \"...\", email = \"...\" },\n]\nclassifiers = [\n  \"...\",\n]\nkeywords = [\n  \"...\",\n]\nrequires-python = \">=3.8\"\ndependencies = [\n  \"...\",\n]\ndynamic = [\"version\"]\n\n[project.urls]\nDocumentation = \"...\"\nSource = \"...\"\n\n[project.optional-dependencies]\nfeature = [\"...\"]\n\n[project.scripts]\nfoo = \"foo.cli:main\"\n\n[tool.hatch.version]\npath = \"src/foo/__about__.py\"\n\n[tool.hatch.build.targets.sdist]\ninclude = [\n  \"/src\",\n  \"/tests\",\n]\n
"},{"location":"meta/faq/#environments","title":"Environments","text":"ToxHatch

Invocation:

tox\n
tox.ini 
[tox]\nenvlist =\n    py{27,38}-{42,3.14}\n    py{38,39}-{9000}-{foo,bar}\n\n[testenv]\nusedevelop = true\ndeps =\n    coverage[toml]\n    pytest\n    pytest-cov\n    foo: cryptography\ncommands =\n    pytest --cov-report=term-missing --cov-config=pyproject.toml --cov=pkg --cov=tests {posargs}\nsetenv =\n    3.14: PRODUCT_VERSION=3.14\n    42: PRODUCT_VERSION=42\n    9000: PRODUCT_VERSION=9000\n    {foo,bar}: EXPERIMENTAL=true\n

Invocation:

hatch run test\n
pyproject.toml hatch.toml 
[tool.hatch.envs.default]\ndependencies = [\n  \"coverage[toml]\",\n  \"pytest\",\n  \"pytest-cov\",\n]\n\n[tool.hatch.envs.default.scripts]\ntest = 'pytest --cov-report=term-missing --cov-config=pyproject.toml --cov=pkg --cov=tests'\n\n[tool.hatch.envs.default.overrides]\nmatrix.version.env-vars = \"PRODUCT_VERSION\"\nmatrix.features.env-vars = \"EXPERIMENTAL=true\"\nmatrix.features.dependencies = [\n  { value = \"cryptography\", if = [\"foo\"] },\n]\n\n[[tool.hatch.envs.default.matrix]]\npython = [\"2.7\", \"3.8\"]\nversion = [\"42\", \"3.14\"]\n\n[[tool.hatch.envs.default.matrix]]\npython = [\"3.8\", \"3.9\"]\nversion = [\"9000\"]\nfeatures = [\"foo\", \"bar\"]\n
[envs.default]\ndependencies = [\n  \"coverage[toml]\",\n  \"pytest\",\n  \"pytest-cov\",\n]\n\n[envs.default.scripts]\ntest = 'pytest --cov-report=term-missing --cov-config=pyproject.toml --cov=pkg --cov=tests'\n\n[envs.default.overrides]\nmatrix.version.env-vars = \"PRODUCT_VERSION\"\nmatrix.features.env-vars = \"EXPERIMENTAL=true\"\nmatrix.features.dependencies = [\n  { value = \"cryptography\", if = [\"foo\"] },\n]\n\n[[envs.default.matrix]]\npython = [\"2.7\", \"3.8\"]\nversion = [\"42\", \"3.14\"]\n\n[[envs.default.matrix]]\npython = [\"3.8\", \"3.9\"]\nversion = [\"9000\"]\nfeatures = [\"foo\", \"bar\"]\n
"},{"location":"meta/faq/#fast-cli","title":"Fast CLI?","text":"

The claim about being faster than other tools is based on timings that are always checked in CI.

Hatch achieves this by using lazy imports, lazily performing computation manually and with functools.cached_property, using hacks like not not ... instead of bool(...), etc.

"},{"location":"plugins/about/","title":"Plugins","text":"

Hatch utilizes pluggy for its plugin functionality.

"},{"location":"plugins/about/#overview","title":"Overview","text":"

All plugins provide registration hooks that return one or more classes that inherit from a particular type interface.

Each registration hook must be decorated by Hatch's hook marker. For example, if you wanted to create a new kind of environment you could do:

hooks.py 
from hatchling.plugin import hookimpl\n\nfrom .plugin import SpecialEnvironment\n\n\n@hookimpl\ndef hatch_register_environment():\n    return SpecialEnvironment\n

The hooks can return a single class or a list of classes.

Every class must define an attribute called PLUGIN_NAME that users will select when they wish to use the plugin. So in the example above, the class might be defined like:

plugin.py 
...\nclass SpecialEnvironment(...):\n    PLUGIN_NAME = 'special'\n    ...\n
"},{"location":"plugins/about/#project-configuration","title":"Project configuration","text":""},{"location":"plugins/about/#naming","title":"Naming","text":"

It is recommended that plugin project names are prefixed with hatch-. For example, if you wanted to make a plugin that provides some functionality for a product named foo you might do:

pyproject.toml 
[project]\nname = \"hatch-foo\"\n
"},{"location":"plugins/about/#discovery","title":"Discovery","text":"

You'll need to define your project as a Python plugin for Hatch:

pyproject.toml 
[project.entry-points.hatch]\nfoo = \"pkg.hooks\"\n

The name of the plugin should be the project name (excluding any hatch- prefix) and the path should represent the module that contains the registration hooks.

"},{"location":"plugins/about/#classifier","title":"Classifier","text":"

Add Framework :: Hatch to your project's classifiers to make it easy to search for Hatch plugins:

pyproject.toml 
[project]\nclassifiers = [\n  ...\n  \"Framework :: Hatch\",\n  ...\n]\n
"},{"location":"plugins/about/#types","title":"Types","text":""},{"location":"plugins/about/#hatchling","title":"Hatchling","text":"

These are all involved in building projects and therefore any defined dependencies are automatically installed in each build environment.

"},{"location":"plugins/about/#hatch","title":"Hatch","text":"

These must be installed in the same environment as Hatch itself.

"},{"location":"plugins/utilities/","title":"Plugin utilities","text":""},{"location":"plugins/utilities/#hatchling.builders.utils.get_reproducible_timestamp","title":"hatchling.builders.utils.get_reproducible_timestamp() -> int","text":"

Returns an int derived from the SOURCE_DATE_EPOCH environment variable; see https://reproducible-builds.org/specs/source-date-epoch/.

The default value will always be: 1580601600

Source code in backend/src/hatchling/builders/utils.py 
def get_reproducible_timestamp() -> int:\n    \"\"\"\n    Returns an `int` derived from the `SOURCE_DATE_EPOCH` environment variable; see\n    https://reproducible-builds.org/specs/source-date-epoch/.\n\n    The default value will always be: `1580601600`\n    \"\"\"\n    return int(os.environ.get('SOURCE_DATE_EPOCH', '1580601600'))\n
"},{"location":"plugins/utilities/#hatchling.builders.config.BuilderConfig","title":"BuilderConfig","text":""},{"location":"plugins/utilities/#hatchling.builders.config.BuilderConfig.directory","title":"directory: str property","text":""},{"location":"plugins/utilities/#hatchling.builders.config.BuilderConfig.ignore_vcs","title":"ignore_vcs: bool property","text":""},{"location":"plugins/utilities/#hatchling.builders.config.BuilderConfig.reproducible","title":"reproducible: bool property","text":"

Whether or not the target should be built in a reproducible manner, defaulting to true.

"},{"location":"plugins/utilities/#hatchling.builders.config.BuilderConfig.dev_mode_dirs","title":"dev_mode_dirs: list[str] property","text":"

Directories which must be added to Python's search path in dev mode.

"},{"location":"plugins/utilities/#hatchling.builders.config.BuilderConfig.versions","title":"versions: list[str] property","text":""},{"location":"plugins/utilities/#hatchling.builders.config.BuilderConfig.dependencies","title":"dependencies: list[str] property","text":""},{"location":"plugins/utilities/#hatchling.builders.config.BuilderConfig.default_include","title":"default_include() -> list","text":""},{"location":"plugins/utilities/#hatchling.builders.config.BuilderConfig.default_exclude","title":"default_exclude() -> list","text":""},{"location":"plugins/utilities/#hatchling.builders.config.BuilderConfig.default_packages","title":"default_packages() -> list","text":""},{"location":"plugins/utilities/#hatchling.builders.config.BuilderConfig.default_only_include","title":"default_only_include() -> list","text":""},{"location":"plugins/utilities/#hatchling.bridge.app.Application","title":"Application","text":"

The way output is displayed can be configured by users.

Important

Never import this directly; Hatch judiciously decides if a type of plugin requires the capabilities herein and will grant access via an attribute.

"},{"location":"plugins/utilities/#hatchling.bridge.app.Application.verbosity","title":"verbosity: int property","text":"

The verbosity level of the application, with 0 as the default.

"},{"location":"plugins/utilities/#hatchling.bridge.app.Application.abort","title":"abort(message: str = '', code: int = 1, **kwargs: Any) -> None","text":"

Terminate the program with the given return code.

"},{"location":"plugins/utilities/#hatchling.bridge.app.Application.display_debug","title":"display_debug(message: str = '', level: int = 1, **kwargs: Any) -> None","text":"

Meant to be used for messages that are not useful for most user experiences. The level option must be between 1 and 3 (inclusive).

"},{"location":"plugins/utilities/#hatchling.bridge.app.Application.display_error","title":"display_error(message: str = '', **kwargs: Any) -> None","text":"

Meant to be used for messages indicating some unrecoverable error.

"},{"location":"plugins/utilities/#hatchling.bridge.app.Application.display_info","title":"display_info(message: str = '', **kwargs: Any) -> None","text":"

Meant to be used for messages conveying basic information.

"},{"location":"plugins/utilities/#hatchling.bridge.app.Application.display_success","title":"display_success(message: str = '', **kwargs: Any) -> None","text":"

Meant to be used for messages indicating some positive outcome.

"},{"location":"plugins/utilities/#hatchling.bridge.app.Application.display_waiting","title":"display_waiting(message: str = '', **kwargs: Any) -> None","text":"

Meant to be used for messages shown before potentially time consuming operations.

"},{"location":"plugins/utilities/#hatchling.bridge.app.Application.display_warning","title":"display_warning(message: str = '', **kwargs: Any) -> None","text":"

Meant to be used for messages conveying important information.

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform","title":"Platform","text":""},{"location":"plugins/utilities/#hatch.utils.platform.Platform.default_shell","title":"default_shell: str property","text":"

Returns the default shell of the system.

On Windows systems first try the SHELL environment variable, if present, followed by the COMSPEC environment variable, defaulting to cmd. On all other platforms only the SHELL environment variable will be used, defaulting to bash.

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform.modules","title":"modules: LazilyLoadedModules property","text":"

Accessor for lazily loading modules that either take multiple milliseconds to import (like shutil and subprocess) or are not used on all platforms (like shlex).

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform.home","title":"home: Path property","text":"

The user's home directory as a path-like object.

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform.name","title":"name: str property","text":"

One of the following:

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform.windows","title":"windows: bool property","text":"

Indicates whether Hatch is running on Windows.

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform.macos","title":"macos: bool property","text":"

Indicates whether Hatch is running on macOS.

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform.linux","title":"linux: bool property","text":"

Indicates whether Hatch is running on neither Windows nor macOS.

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform.format_for_subprocess","title":"format_for_subprocess(command: str | list[str], *, shell: bool) -> str | list[str]","text":"

Format the given command in a cross-platform manner for immediate consumption by subprocess utilities.

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform.run_command","title":"run_command(command: str | list[str], *, shell: bool = False, **kwargs: Any) -> CompletedProcess","text":"

Equivalent to the standard library's subprocess.run, with the command first being properly formatted.

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform.check_command","title":"check_command(command: str | list[str], *, shell: bool = False, **kwargs: Any) -> CompletedProcess","text":"

Equivalent to run_command, but non-zero exit codes will gracefully end program execution.

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform.check_command_output","title":"check_command_output(command: str | list[str], *, shell: bool = False, **kwargs: Any) -> str","text":"

Equivalent to the output from the process returned by capture_process, but non-zero exit codes will gracefully end program execution.

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform.capture_process","title":"capture_process(command: str | list[str], *, shell: bool = False, **kwargs: Any) -> Popen","text":"

Equivalent to the standard library's subprocess.Popen, with all output captured by stdout and the command first being properly formatted.

"},{"location":"plugins/utilities/#hatch.utils.platform.Platform.exit_with_command","title":"exit_with_command(command: list[str]) -> None","text":"

Run the given command and exit with its exit code. On non-Windows systems, this uses the standard library's os.execvp.

"},{"location":"plugins/utilities/#hatch.env.context.EnvironmentContextFormatter","title":"EnvironmentContextFormatter","text":""},{"location":"plugins/utilities/#hatch.env.context.EnvironmentContextFormatter.formatters","title":"formatters()","text":"

This returns a mapping of supported field names to their respective formatting functions. Each function accepts 2 arguments:

"},{"location":"plugins/build-hook/custom/","title":"Custom build hook","text":"

This is a custom class in a given Python file that inherits from the BuildHookInterface.

"},{"location":"plugins/build-hook/custom/#configuration","title":"Configuration","text":"

The build hook plugin name is custom.

pyproject.toml hatch.toml 
[tool.hatch.build.hooks.custom]\n[tool.hatch.build.targets.<TARGET_NAME>.hooks.custom]\n
[build.hooks.custom]\n[build.targets.<TARGET_NAME>.hooks.custom]\n
"},{"location":"plugins/build-hook/custom/#options","title":"Options","text":"Option Default Description path hatch_build.py The path of the Python file"},{"location":"plugins/build-hook/custom/#example","title":"Example","text":"hatch_build.py 
from hatchling.builders.hooks.plugin.interface import BuildHookInterface\n\n\nclass CustomBuildHook(BuildHookInterface):\n    ...\n

If multiple subclasses are found, you must define a function named get_build_hook that returns the desired build hook.

Note

Any defined PLUGIN_NAME is ignored and will always be custom.

"},{"location":"plugins/build-hook/reference/","title":"Build hook plugins","text":"

A build hook provides code that will be executed at various stages of the build process. See the documentation for build hook configuration.

"},{"location":"plugins/build-hook/reference/#known-third-party","title":"Known third-party","text":""},{"location":"plugins/build-hook/reference/#overview","title":"Overview","text":"

Build hooks run for every selected version of build targets.

The initialization stage occurs immediately before each build and the finalization stage occurs immediately after. Each stage has the opportunity to view or modify build data.

"},{"location":"plugins/build-hook/reference/#build-data","title":"Build data","text":"

Build data is a simple mapping whose contents can influence the behavior of builds. Which fields exist and are recognized depends on each build target.

The following fields are always present and recognized by the build system itself:

Field Type Description artifacts list[str] This is a list of extra artifact patterns and should generally only be appended to force_include dict[str, str] This is a mapping of extra forced inclusion paths, with this mapping taking precedence in case of conflicts build_hooks tuple[str, ...] This is an immutable sequence of the names of the configured build hooks and matches the order in which they run

Attention

While user-facing TOML options are hyphenated, build data fields should be named with underscores to allow plugins to use them as valid Python identifiers.

"},{"location":"plugins/build-hook/reference/#notes","title":"Notes","text":"

In some cases it may be necessary to use force_include rather than artifacts. For example, say that you want to install a lib.so directly at the root of site-packages and a project defines a package src/foo. If you create src/lib.so, there will never be a match because the directory traversal starts at src/foo rather than src. In that case you must do either:

build_data['force_include']['src/lib.so'] = 'src/lib.so'\n

or

build_data['force_include']['/absolute/path/to/src/lib.so'] = 'src/lib.so'\n
"},{"location":"plugins/build-hook/reference/#hatchling.builders.hooks.plugin.interface.BuildHookInterface","title":"BuildHookInterface","text":"

Example usage:

plugin.py hooks.py 
from hatchling.builders.hooks.plugin.interface import BuildHookInterface\n\n\nclass SpecialBuildHook(BuildHookInterface):\n    PLUGIN_NAME = 'special'\n    ...\n
from hatchling.plugin import hookimpl\n\nfrom .plugin import SpecialBuildHook\n\n\n@hookimpl\ndef hatch_register_build_hook():\n    return SpecialBuildHook\n
Source code in backend/src/hatchling/builders/hooks/plugin/interface.py 
class BuildHookInterface(Generic[BuilderConfigBound]):  # no cov\n    \"\"\"\n    Example usage:\n\n    ```python tab=\"plugin.py\"\n    from hatchling.builders.hooks.plugin.interface import BuildHookInterface\n\n\n    class SpecialBuildHook(BuildHookInterface):\n        PLUGIN_NAME = 'special'\n        ...\n    ```\n\n    ```python tab=\"hooks.py\"\n    from hatchling.plugin import hookimpl\n\n    from .plugin import SpecialBuildHook\n\n\n    @hookimpl\n    def hatch_register_build_hook():\n        return SpecialBuildHook\n    ```\n    \"\"\"\n\n    PLUGIN_NAME = ''\n    \"\"\"The name used for selection.\"\"\"\n\n    def __init__(\n        self,\n        root: str,\n        config: dict[str, Any],\n        build_config: BuilderConfigBound,\n        metadata: ProjectMetadata,\n        directory: str,\n        target_name: str,\n        app: Application | None = None,\n    ) -> None:\n        self.__root = root\n        self.__config = config\n        self.__build_config = build_config\n        self.__metadata = metadata\n        self.__directory = directory\n        self.__target_name = target_name\n        self.__app = app\n\n    @property\n    def app(self) -> Application:\n        \"\"\"\n        An instance of [Application](../utilities.md#hatchling.bridge.app.Application).\n        \"\"\"\n        if self.__app is None:\n            from hatchling.bridge.app import Application\n\n            self.__app = cast(Application, Application().get_safe_application())\n\n        return self.__app\n\n    @property\n    def root(self) -> str:\n        \"\"\"\n        The root of the project tree.\n        \"\"\"\n        return self.__root\n\n    @property\n    def config(self) -> dict[str, Any]:\n        \"\"\"\n        The cumulative hook configuration.\n\n        ```toml config-example\n        [tool.hatch.build.hooks.<PLUGIN_NAME>]\n        [tool.hatch.build.targets.<TARGET_NAME>.hooks.<PLUGIN_NAME>]\n        ```\n        \"\"\"\n        return self.__config\n\n    @property\n    def metadata(self) -> ProjectMetadata:\n        # Undocumented for now\n        return self.__metadata\n\n    @property\n    def build_config(self) -> BuilderConfigBound:\n        \"\"\"\n        An instance of [BuilderConfig](../utilities.md#hatchling.builders.config.BuilderConfig).\n        \"\"\"\n        return self.__build_config\n\n    @property\n    def directory(self) -> str:\n        \"\"\"\n        The build directory.\n        \"\"\"\n        return self.__directory\n\n    @property\n    def target_name(self) -> str:\n        \"\"\"\n        The plugin name of the build target.\n        \"\"\"\n        return self.__target_name\n\n    def clean(self, versions: list[str]) -> None:\n        \"\"\"\n        This occurs before the build process if the `-c`/`--clean` flag was passed to\n        the [`build`](../../cli/reference.md#hatch-build) command, or when invoking\n        the [`clean`](../../cli/reference.md#hatch-clean) command.\n        \"\"\"\n\n    def initialize(self, version: str, build_data: dict[str, Any]) -> None:\n        \"\"\"\n        This occurs immediately before each build.\n\n        Any modifications to the build data will be seen by the build target.\n        \"\"\"\n\n    def finalize(self, version: str, build_data: dict[str, Any], artifact_path: str) -> None:\n        \"\"\"\n        This occurs immediately after each build and will not run if the `--hooks-only` flag\n        was passed to the [`build`](../../cli/reference.md#hatch-build) command.\n\n        The build data will reflect any modifications done by the target during the build.\n        \"\"\"\n
"},{"location":"plugins/build-hook/reference/#hatchling.builders.hooks.plugin.interface.BuildHookInterface.PLUGIN_NAME","title":"PLUGIN_NAME = '' class-attribute instance-attribute","text":"

The name used for selection.

"},{"location":"plugins/build-hook/reference/#hatchling.builders.hooks.plugin.interface.BuildHookInterface.app","title":"app: Application property","text":"

An instance of Application.

"},{"location":"plugins/build-hook/reference/#hatchling.builders.hooks.plugin.interface.BuildHookInterface.root","title":"root: str property","text":"

The root of the project tree.

"},{"location":"plugins/build-hook/reference/#hatchling.builders.hooks.plugin.interface.BuildHookInterface.config","title":"config: dict[str, Any] property","text":"

The cumulative hook configuration.

pyproject.toml hatch.toml 
[tool.hatch.build.hooks.<PLUGIN_NAME>]\n[tool.hatch.build.targets.<TARGET_NAME>.hooks.<PLUGIN_NAME>]\n
[build.hooks.<PLUGIN_NAME>]\n[build.targets.<TARGET_NAME>.hooks.<PLUGIN_NAME>]\n
"},{"location":"plugins/build-hook/reference/#hatchling.builders.hooks.plugin.interface.BuildHookInterface.build_config","title":"build_config: BuilderConfigBound property","text":"

An instance of BuilderConfig.

"},{"location":"plugins/build-hook/reference/#hatchling.builders.hooks.plugin.interface.BuildHookInterface.target_name","title":"target_name: str property","text":"

The plugin name of the build target.

"},{"location":"plugins/build-hook/reference/#hatchling.builders.hooks.plugin.interface.BuildHookInterface.directory","title":"directory: str property","text":"

The build directory.

"},{"location":"plugins/build-hook/reference/#hatchling.builders.hooks.plugin.interface.BuildHookInterface.clean","title":"clean(versions: list[str]) -> None","text":"

This occurs before the build process if the -c/--clean flag was passed to the build command, or when invoking the clean command.

Source code in backend/src/hatchling/builders/hooks/plugin/interface.py 
def clean(self, versions: list[str]) -> None:\n    \"\"\"\n    This occurs before the build process if the `-c`/`--clean` flag was passed to\n    the [`build`](../../cli/reference.md#hatch-build) command, or when invoking\n    the [`clean`](../../cli/reference.md#hatch-clean) command.\n    \"\"\"\n
"},{"location":"plugins/build-hook/reference/#hatchling.builders.hooks.plugin.interface.BuildHookInterface.initialize","title":"initialize(version: str, build_data: dict[str, Any]) -> None","text":"

This occurs immediately before each build.

Any modifications to the build data will be seen by the build target.

Source code in backend/src/hatchling/builders/hooks/plugin/interface.py 
def initialize(self, version: str, build_data: dict[str, Any]) -> None:\n    \"\"\"\n    This occurs immediately before each build.\n\n    Any modifications to the build data will be seen by the build target.\n    \"\"\"\n
"},{"location":"plugins/build-hook/reference/#hatchling.builders.hooks.plugin.interface.BuildHookInterface.finalize","title":"finalize(version: str, build_data: dict[str, Any], artifact_path: str) -> None","text":"

This occurs immediately after each build and will not run if the --hooks-only flag was passed to the build command.

The build data will reflect any modifications done by the target during the build.

Source code in backend/src/hatchling/builders/hooks/plugin/interface.py 
def finalize(self, version: str, build_data: dict[str, Any], artifact_path: str) -> None:\n    \"\"\"\n    This occurs immediately after each build and will not run if the `--hooks-only` flag\n    was passed to the [`build`](../../cli/reference.md#hatch-build) command.\n\n    The build data will reflect any modifications done by the target during the build.\n    \"\"\"\n
"},{"location":"plugins/build-hook/version/","title":"Version build hook","text":"

This writes the project's version to a file.

"},{"location":"plugins/build-hook/version/#configuration","title":"Configuration","text":"

The build hook plugin name is version.

pyproject.toml hatch.toml 
[tool.hatch.build.hooks.version]\n[tool.hatch.build.targets.<TARGET_NAME>.hooks.version]\n
[build.hooks.version]\n[build.targets.<TARGET_NAME>.hooks.version]\n
"},{"location":"plugins/build-hook/version/#options","title":"Options","text":"Option Description path (required) A relative path to the desired file template A string representing the entire contents of path that will be formatted with a version variable pattern Rather than updating the entire file, a regular expression may be used that has a named group called version that represents the version. If set to true, a pattern will be used that looks for a variable named __version__ or VERSION that is set to a string containing the version, optionally prefixed with the lowercase letter v."},{"location":"plugins/builder/app/","title":"Application builder","text":"

This uses PyApp to build an application that is able to bootstrap itself at runtime.

Note

This requires an installation of Rust.

"},{"location":"plugins/builder/app/#configuration","title":"Configuration","text":"

The builder plugin name is app.

pyproject.toml hatch.toml 
[tool.hatch.build.targets.app]\n
[build.targets.app]\n
"},{"location":"plugins/builder/app/#options","title":"Options","text":"Option Default Description scripts all defined An array of defined script names to limit what gets built python-version latest compatible Python minor version The Python version ID to use pyapp-version The version of PyApp to use"},{"location":"plugins/builder/app/#build-behavior","title":"Build behavior","text":"

If any scripts are defined then each one will be built (limited by the scripts option). Otherwise, a single executable will be built based on the project name assuming there is an equivalently named module with a __main__.py file.

Every executable will be built inside an app directory in the output directory.

If the CARGO environment variable is set then that path will be used as the executable for performing builds.

If the CARGO_BUILD_TARGET environment variable is set then its value will be appended to the file name stems.

If the PYAPP_REPO environment variable is set then a local build will be performed inside that directory rather than installing from crates.io. Note that this is required if the CARGO environment variable refers to cross.

"},{"location":"plugins/builder/custom/","title":"Custom builder","text":"

This is a custom class in a given Python file that inherits from the BuilderInterface.

"},{"location":"plugins/builder/custom/#configuration","title":"Configuration","text":"

The builder plugin name is custom.

pyproject.toml hatch.toml 
[tool.hatch.build.targets.custom]\n
[build.targets.custom]\n
"},{"location":"plugins/builder/custom/#options","title":"Options","text":"Option Default Description path hatch_build.py The path of the Python file"},{"location":"plugins/builder/custom/#example","title":"Example","text":"hatch_build.py 
from hatchling.builders.plugin.interface import BuilderInterface\n\n\nclass CustomBuilder(BuilderInterface):\n    ...\n

If multiple subclasses are found, you must define a function named get_builder that returns the desired builder.

Note

Any defined PLUGIN_NAME is ignored and will always be custom.

"},{"location":"plugins/builder/reference/","title":"Builder plugins","text":"

See the documentation for build configuration.

"},{"location":"plugins/builder/reference/#known-third-party","title":"Known third-party","text":""},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface","title":"BuilderInterface","text":"

Example usage:

plugin.py hooks.py 
from hatchling.builders.plugin.interface import BuilderInterface\n\n\nclass SpecialBuilder(BuilderInterface):\n    PLUGIN_NAME = 'special'\n    ...\n
from hatchling.plugin import hookimpl\n\nfrom .plugin import SpecialBuilder\n\n\n@hookimpl\ndef hatch_register_builder():\n    return SpecialBuilder\n
Source code in backend/src/hatchling/builders/plugin/interface.py 
class BuilderInterface(ABC, Generic[BuilderConfigBound, PluginManagerBound]):\n    \"\"\"\n    Example usage:\n\n    ```python tab=\"plugin.py\"\n    from hatchling.builders.plugin.interface import BuilderInterface\n\n\n    class SpecialBuilder(BuilderInterface):\n        PLUGIN_NAME = 'special'\n        ...\n    ```\n\n    ```python tab=\"hooks.py\"\n    from hatchling.plugin import hookimpl\n\n    from .plugin import SpecialBuilder\n\n\n    @hookimpl\n    def hatch_register_builder():\n        return SpecialBuilder\n    ```\n    \"\"\"\n\n    PLUGIN_NAME = ''\n    \"\"\"The name used for selection.\"\"\"\n\n    def __init__(\n        self,\n        root: str,\n        plugin_manager: PluginManagerBound | None = None,\n        config: dict[str, Any] | None = None,\n        metadata: ProjectMetadata | None = None,\n        app: Application | None = None,\n    ) -> None:\n        self.__root = root\n        self.__plugin_manager = cast(PluginManagerBound, plugin_manager)\n        self.__raw_config = config\n        self.__metadata = metadata\n        self.__app = app\n        self.__config = cast(BuilderConfigBound, None)\n        self.__project_config: dict[str, Any] | None = None\n        self.__hatch_config: dict[str, Any] | None = None\n        self.__build_config: dict[str, Any] | None = None\n        self.__build_targets: list[str] | None = None\n        self.__target_config: dict[str, Any] | None = None\n\n        # Metadata\n        self.__project_id: str | None = None\n\n    def build(\n        self,\n        *,\n        directory: str | None = None,\n        versions: list[str] | None = None,\n        hooks_only: bool | None = None,\n        clean: bool | None = None,\n        clean_hooks_after: bool | None = None,\n        clean_only: bool | None = False,\n    ) -> Generator[str, None, None]:\n        # Fail early for invalid project metadata\n        self.metadata.validate_fields()\n\n        if directory is None:\n            directory = (\n                self.config.normalize_build_directory(os.environ[BuildEnvVars.LOCATION])\n                if BuildEnvVars.LOCATION in os.environ\n                else self.config.directory\n            )\n\n        if not os.path.isdir(directory):\n            os.makedirs(directory)\n\n        version_api = self.get_version_api()\n\n        versions = versions or self.config.versions\n        if versions:\n            unknown_versions = set(versions) - set(version_api)\n            if unknown_versions:\n                message = (\n                    f'Unknown versions for target `{self.PLUGIN_NAME}`: {\", \".join(map(str, sorted(unknown_versions)))}'\n                )\n                raise ValueError(message)\n\n        if hooks_only is None:\n            hooks_only = env_var_enabled(BuildEnvVars.HOOKS_ONLY)\n\n        configured_build_hooks = self.get_build_hooks(directory)\n        build_hooks = list(configured_build_hooks.values())\n\n        if clean_only:\n            clean = True\n        elif clean is None:\n            clean = env_var_enabled(BuildEnvVars.CLEAN)\n        if clean:\n            if not hooks_only:\n                self.clean(directory, versions)\n\n            for build_hook in build_hooks:\n                build_hook.clean(versions)\n\n            if clean_only:\n                return\n\n        if clean_hooks_after is None:\n            clean_hooks_after = env_var_enabled(BuildEnvVars.CLEAN_HOOKS_AFTER)\n\n        for version in versions:\n            self.app.display_debug(f'Building `{self.PLUGIN_NAME}` version `{version}`')\n\n            build_data = self.get_default_build_data()\n            self.set_build_data_defaults(build_data)\n\n            # Allow inspection of configured build hooks and the order in which they run\n            build_data['build_hooks'] = tuple(configured_build_hooks)\n\n            # Execute all `initialize` build hooks\n            for build_hook in build_hooks:\n                build_hook.initialize(version, build_data)\n\n            if hooks_only:\n                self.app.display_debug(f'Only ran build hooks for `{self.PLUGIN_NAME}` version `{version}`')\n                continue\n\n            # Build the artifact\n            with self.config.set_build_data(build_data):\n                artifact = version_api[version](directory, **build_data)\n\n            # Execute all `finalize` build hooks\n            for build_hook in build_hooks:\n                build_hook.finalize(version, build_data, artifact)\n\n            if clean_hooks_after:\n                for build_hook in build_hooks:\n                    build_hook.clean([version])\n\n            yield artifact\n\n    def recurse_included_files(self) -> Iterable[IncludedFile]:\n        \"\"\"\n        Returns a consistently generated series of file objects for every file that should be distributed. Each file\n        object has three `str` attributes:\n\n        - `path` - the absolute path\n        - `relative_path` - the path relative to the project root; will be an empty string for external files\n        - `distribution_path` - the path to be distributed as\n        \"\"\"\n        yield from self.recurse_selected_project_files()\n        yield from self.recurse_forced_files(self.config.get_force_include())\n\n    def recurse_selected_project_files(self) -> Iterable[IncludedFile]:\n        if self.config.only_include:\n            yield from self.recurse_explicit_files(self.config.only_include)\n        else:\n            yield from self.recurse_project_files()\n\n    def recurse_project_files(self) -> Iterable[IncludedFile]:\n        for root, dirs, files in safe_walk(self.root):\n            relative_path = get_relative_path(root, self.root)\n\n            dirs[:] = sorted(d for d in dirs if not self.config.directory_is_excluded(d, relative_path))\n\n            files.sort()\n            is_package = '__init__.py' in files\n            for f in files:\n                relative_file_path = os.path.join(relative_path, f)\n                distribution_path = self.config.get_distribution_path(relative_file_path)\n                if self.config.path_is_reserved(distribution_path):\n                    continue\n\n                if self.config.include_path(relative_file_path, is_package=is_package):\n                    yield IncludedFile(\n                        os.path.join(root, f), relative_file_path, self.config.get_distribution_path(relative_file_path)\n                    )\n\n    def recurse_forced_files(self, inclusion_map: dict[str, str]) -> Iterable[IncludedFile]:\n        for source, target_path in inclusion_map.items():\n            external = not source.startswith(self.root)\n            if os.path.isfile(source):\n                yield IncludedFile(\n                    source,\n                    '' if external else os.path.relpath(source, self.root),\n                    self.config.get_distribution_path(target_path),\n                )\n            elif os.path.isdir(source):\n                for root, dirs, files in safe_walk(source):\n                    relative_directory = get_relative_path(root, source)\n\n                    dirs[:] = sorted(d for d in dirs if d not in EXCLUDED_DIRECTORIES)\n\n                    files.sort()\n                    for f in files:\n                        relative_file_path = os.path.join(target_path, relative_directory, f)\n                        distribution_path = self.config.get_distribution_path(relative_file_path)\n                        if not self.config.path_is_reserved(distribution_path):\n                            yield IncludedFile(\n                                os.path.join(root, f),\n                                '' if external else relative_file_path,\n                                distribution_path,\n                            )\n            else:\n                msg = f'Forced include not found: {source}'\n                raise FileNotFoundError(msg)\n\n    def recurse_explicit_files(self, inclusion_map: dict[str, str]) -> Iterable[IncludedFile]:\n        for source, target_path in inclusion_map.items():\n            external = not source.startswith(self.root)\n            if os.path.isfile(source):\n                distribution_path = self.config.get_distribution_path(target_path)\n                if not self.config.path_is_reserved(distribution_path):\n                    yield IncludedFile(\n                        source,\n                        '' if external else os.path.relpath(source, self.root),\n                        self.config.get_distribution_path(target_path),\n                    )\n            elif os.path.isdir(source):\n                for root, dirs, files in safe_walk(source):\n                    relative_directory = get_relative_path(root, source)\n\n                    dirs[:] = sorted(d for d in dirs if d not in EXCLUDED_DIRECTORIES)\n\n                    files.sort()\n                    is_package = '__init__.py' in files\n                    for f in files:\n                        relative_file_path = os.path.join(target_path, relative_directory, f)\n                        distribution_path = self.config.get_distribution_path(relative_file_path)\n                        if self.config.path_is_reserved(distribution_path):\n                            continue\n\n                        if self.config.include_path(relative_file_path, explicit=True, is_package=is_package):\n                            yield IncludedFile(\n                                os.path.join(root, f), '' if external else relative_file_path, distribution_path\n                            )\n\n    @property\n    def root(self) -> str:\n        \"\"\"\n        The root of the project tree.\n        \"\"\"\n        return self.__root\n\n    @property\n    def plugin_manager(self) -> PluginManagerBound:\n        if self.__plugin_manager is None:\n            from hatchling.plugin.manager import PluginManager\n\n            self.__plugin_manager = PluginManager()\n\n        return self.__plugin_manager\n\n    @property\n    def metadata(self) -> ProjectMetadata:\n        if self.__metadata is None:\n            from hatchling.metadata.core import ProjectMetadata\n\n            self.__metadata = ProjectMetadata(self.root, self.plugin_manager, self.__raw_config)\n\n        return self.__metadata\n\n    @property\n    def app(self) -> Application:\n        \"\"\"\n        An instance of [Application](../utilities.md#hatchling.bridge.app.Application).\n        \"\"\"\n        if self.__app is None:\n            from hatchling.bridge.app import Application\n\n            self.__app = cast(Application, Application().get_safe_application())\n\n        return self.__app\n\n    @property\n    def raw_config(self) -> dict[str, Any]:\n        if self.__raw_config is None:\n            self.__raw_config = self.metadata.config\n\n        return self.__raw_config\n\n    @property\n    def project_config(self) -> dict[str, Any]:\n        if self.__project_config is None:\n            self.__project_config = self.metadata.core.config\n\n        return self.__project_config\n\n    @property\n    def hatch_config(self) -> dict[str, Any]:\n        if self.__hatch_config is None:\n            self.__hatch_config = self.metadata.hatch.config\n\n        return self.__hatch_config\n\n    @property\n    def config(self) -> BuilderConfigBound:\n        \"\"\"\n        An instance of [BuilderConfig](../utilities.md#hatchling.builders.config.BuilderConfig).\n        \"\"\"\n        if self.__config is None:\n            self.__config = self.get_config_class()(\n                self, self.root, self.PLUGIN_NAME, self.build_config, self.target_config\n            )\n\n        return self.__config\n\n    @property\n    def build_config(self) -> dict[str, Any]:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.build]\n        ```\n        \"\"\"\n        if self.__build_config is None:\n            self.__build_config = self.metadata.hatch.build_config\n\n        return self.__build_config\n\n    @property\n    def target_config(self) -> dict[str, Any]:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.build.targets.<PLUGIN_NAME>]\n        ```\n        \"\"\"\n        if self.__target_config is None:\n            target_config: dict[str, Any] = self.metadata.hatch.build_targets.get(self.PLUGIN_NAME, {})\n            if not isinstance(target_config, dict):\n                message = f'Field `tool.hatch.build.targets.{self.PLUGIN_NAME}` must be a table'\n                raise TypeError(message)\n\n            self.__target_config = target_config\n\n        return self.__target_config\n\n    @property\n    def project_id(self) -> str:\n        if self.__project_id is None:\n            self.__project_id = f'{self.normalize_file_name_component(self.metadata.core.name)}-{self.metadata.version}'\n\n        return self.__project_id\n\n    def get_build_hooks(self, directory: str) -> dict[str, BuildHookInterface]:\n        configured_build_hooks = {}\n        for hook_name, config in self.config.hook_config.items():\n            build_hook = self.plugin_manager.build_hook.get(hook_name)\n            if build_hook is None:\n                from hatchling.plugin.exceptions import UnknownPluginError\n\n                message = f'Unknown build hook: {hook_name}'\n                raise UnknownPluginError(message)\n\n            configured_build_hooks[hook_name] = build_hook(\n                self.root, config, self.config, self.metadata, directory, self.PLUGIN_NAME, self.app\n            )\n\n        return configured_build_hooks\n\n    @abstractmethod\n    def get_version_api(self) -> dict[str, Callable]:\n        \"\"\"\n        A mapping of `str` versions to a callable that is used for building.\n        Each callable must have the following signature:\n\n        ```python\n        def ...(build_dir: str, build_data: dict) -> str:\n        ```\n\n        The return value must be the absolute path to the built artifact.\n        \"\"\"\n\n    def get_default_versions(self) -> list[str]:\n        \"\"\"\n        A list of versions to build when users do not specify any, defaulting to all versions.\n        \"\"\"\n        return list(self.get_version_api())\n\n    def get_default_build_data(self) -> dict[str, Any]:  # noqa: PLR6301\n        \"\"\"\n        A mapping that can be modified by [build hooks](../build-hook/reference.md) to influence the behavior of builds.\n        \"\"\"\n        return {}\n\n    def set_build_data_defaults(self, build_data: dict[str, Any]) -> None:  # noqa: PLR6301\n        build_data.setdefault('artifacts', [])\n        build_data.setdefault('force_include', {})\n\n    def clean(self, directory: str, versions: list[str]) -> None:\n        \"\"\"\n        Called before builds if the `-c`/`--clean` flag was passed to the\n        [`build`](../../cli/reference.md#hatch-build) command.\n        \"\"\"\n\n    @classmethod\n    def get_config_class(cls) -> type[BuilderConfig]:\n        \"\"\"\n        Must return a subclass of [BuilderConfig](../utilities.md#hatchling.builders.config.BuilderConfig).\n        \"\"\"\n        return BuilderConfig\n\n    @staticmethod\n    def normalize_file_name_component(file_name: str) -> str:\n        \"\"\"\n        https://peps.python.org/pep-0427/#escaping-and-unicode\n        \"\"\"\n        return re.sub(r'[^\\w\\d.]+', '_', file_name, flags=re.UNICODE)\n
"},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface.PLUGIN_NAME","title":"PLUGIN_NAME = '' class-attribute instance-attribute","text":"

The name used for selection.

"},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface.app","title":"app: Application property","text":"

An instance of Application.

"},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface.root","title":"root: str property","text":"

The root of the project tree.

"},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface.build_config","title":"build_config: dict[str, Any] property","text":"pyproject.toml hatch.toml 
[tool.hatch.build]\n
[build]\n
"},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface.target_config","title":"target_config: dict[str, Any] property","text":"pyproject.toml hatch.toml 
[tool.hatch.build.targets.<PLUGIN_NAME>]\n
[build.targets.<PLUGIN_NAME>]\n
"},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface.config","title":"config: BuilderConfigBound property","text":"

An instance of BuilderConfig.

"},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface.get_config_class","title":"get_config_class() -> type[BuilderConfig] classmethod","text":"

Must return a subclass of BuilderConfig.

Source code in backend/src/hatchling/builders/plugin/interface.py 
@classmethod\ndef get_config_class(cls) -> type[BuilderConfig]:\n    \"\"\"\n    Must return a subclass of [BuilderConfig](../utilities.md#hatchling.builders.config.BuilderConfig).\n    \"\"\"\n    return BuilderConfig\n
"},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface.get_version_api","title":"get_version_api() -> dict[str, Callable] abstractmethod","text":"

A mapping of str versions to a callable that is used for building. Each callable must have the following signature:

def ...(build_dir: str, build_data: dict) -> str:\n

The return value must be the absolute path to the built artifact.

Source code in backend/src/hatchling/builders/plugin/interface.py 
@abstractmethod\ndef get_version_api(self) -> dict[str, Callable]:\n    \"\"\"\n    A mapping of `str` versions to a callable that is used for building.\n    Each callable must have the following signature:\n\n    ```python\n    def ...(build_dir: str, build_data: dict) -> str:\n    ```\n\n    The return value must be the absolute path to the built artifact.\n    \"\"\"\n
"},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface.get_default_versions","title":"get_default_versions() -> list[str]","text":"

A list of versions to build when users do not specify any, defaulting to all versions.

Source code in backend/src/hatchling/builders/plugin/interface.py 
def get_default_versions(self) -> list[str]:\n    \"\"\"\n    A list of versions to build when users do not specify any, defaulting to all versions.\n    \"\"\"\n    return list(self.get_version_api())\n
"},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface.clean","title":"clean(directory: str, versions: list[str]) -> None","text":"

Called before builds if the -c/--clean flag was passed to the build command.

Source code in backend/src/hatchling/builders/plugin/interface.py 
def clean(self, directory: str, versions: list[str]) -> None:\n    \"\"\"\n    Called before builds if the `-c`/`--clean` flag was passed to the\n    [`build`](../../cli/reference.md#hatch-build) command.\n    \"\"\"\n
"},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface.recurse_included_files","title":"recurse_included_files() -> Iterable[IncludedFile]","text":"

Returns a consistently generated series of file objects for every file that should be distributed. Each file object has three str attributes:

Source code in backend/src/hatchling/builders/plugin/interface.py 
def recurse_included_files(self) -> Iterable[IncludedFile]:\n    \"\"\"\n    Returns a consistently generated series of file objects for every file that should be distributed. Each file\n    object has three `str` attributes:\n\n    - `path` - the absolute path\n    - `relative_path` - the path relative to the project root; will be an empty string for external files\n    - `distribution_path` - the path to be distributed as\n    \"\"\"\n    yield from self.recurse_selected_project_files()\n    yield from self.recurse_forced_files(self.config.get_force_include())\n
"},{"location":"plugins/builder/reference/#hatchling.builders.plugin.interface.BuilderInterface.get_default_build_data","title":"get_default_build_data() -> dict[str, Any]","text":"

A mapping that can be modified by build hooks to influence the behavior of builds.

Source code in backend/src/hatchling/builders/plugin/interface.py 
def get_default_build_data(self) -> dict[str, Any]:  # noqa: PLR6301\n    \"\"\"\n    A mapping that can be modified by [build hooks](../build-hook/reference.md) to influence the behavior of builds.\n    \"\"\"\n    return {}\n
"},{"location":"plugins/builder/sdist/","title":"Source distribution builder","text":"

A source distribution, or sdist, is an archive of Python \"source code\". Although largely unspecified, by convention it should include everything that is required to build a wheel without making network requests.

"},{"location":"plugins/builder/sdist/#configuration","title":"Configuration","text":"

The builder plugin name is sdist.

pyproject.toml hatch.toml 
[tool.hatch.build.targets.sdist]\n
[build.targets.sdist]\n
"},{"location":"plugins/builder/sdist/#options","title":"Options","text":"Option Default Description core-metadata-version \"2.1\" The version of core metadata to use strict-naming true Whether or not file names should contain the normalized version of the project name support-legacy false Whether or not to include a setup.py file to support legacy installation mechanisms"},{"location":"plugins/builder/sdist/#versions","title":"Versions","text":"Version Description standard (default) The latest conventional format"},{"location":"plugins/builder/sdist/#default-file-selection","title":"Default file selection","text":"

When the user has not set any file selection options, all files that are not ignored by your VCS will be included.

Note

The following files are always included and cannot be excluded:

"},{"location":"plugins/builder/sdist/#reproducibility","title":"Reproducibility","text":"

Reproducible builds are supported.

"},{"location":"plugins/builder/sdist/#build-data","title":"Build data","text":"

This is data that can be modified by build hooks.

Data Default Description dependencies Extra project dependencies"},{"location":"plugins/builder/wheel/","title":"Wheel builder","text":"

A wheel is a binary distribution of a Python package that can be installed directly into an environment.

"},{"location":"plugins/builder/wheel/#configuration","title":"Configuration","text":"

The builder plugin name is wheel.

pyproject.toml hatch.toml 
[tool.hatch.build.targets.wheel]\n
[build.targets.wheel]\n
"},{"location":"plugins/builder/wheel/#options","title":"Options","text":"Option Default Description core-metadata-version \"2.1\" The version of core metadata to use shared-data A mapping similar to the forced inclusion option corresponding to data that will be installed globally in a given Python environment, usually under sys.prefix extra-metadata A mapping similar to the forced inclusion option corresponding to extra metadata that will be shipped in a directory named extra_metadata strict-naming true Whether or not file names should contain the normalized version of the project name macos-max-compat true Whether or not on macOS, when build hooks have set the infer_tag build data, the wheel name should signal broad support rather than specific versions for newer SDK versions.Note: The default will become false, and this option eventually removed, sometime after consumers like pip start supporting these newer SDK versions. bypass-selection false Whether or not to suppress the error when one has not defined any file selection options and all heuristics have failed to determine what to ship"},{"location":"plugins/builder/wheel/#versions","title":"Versions","text":"Version Description standard (default) The latest standardized format editable A wheel that only ships .pth files or import hooks for real-time development"},{"location":"plugins/builder/wheel/#default-file-selection","title":"Default file selection","text":"

When the user has not set any file selection options, the project name will be used to determine the package to ship in the following heuristic order:

  1. <NAME>/__init__.py
  2. src/<NAME>/__init__.py
  3. <NAME>.py
  4. <NAMESPACE>/<NAME>/__init__.py

If none of these heuristics are satisfied, an error will be raised.

"},{"location":"plugins/builder/wheel/#reproducibility","title":"Reproducibility","text":"

Reproducible builds are supported.

"},{"location":"plugins/builder/wheel/#build-data","title":"Build data","text":"

This is data that can be modified by build hooks.

Data Default Description tag The full tag part of the filename (e.g. py3-none-any), defaulting to a cross-platform wheel with the supported major versions of Python based on project metadata infer_tag False When tag is not set, this may be enabled to use the one most specific to the platform, Python interpreter, and ABI pure_python True Whether or not to write metadata indicating that the package does not contain any platform-specific files dependencies Extra project dependencies extra_metadata Additional extra-metadata entries, which take precedence in case of conflicts force_include_editable Similar to the force_include option but specifically for the editable version and takes precedence"},{"location":"plugins/environment/reference/","title":"Environment plugins","text":"

See the documentation for environment configuration.

"},{"location":"plugins/environment/reference/#known-third-party","title":"Known third-party","text":""},{"location":"plugins/environment/reference/#installation","title":"Installation","text":"

Any required environment types that are not built-in must be manually installed alongside Hatch or listed in the tool.hatch.env.requires array for automatic management:

pyproject.toml hatch.toml 
[tool.hatch.env]\nrequires = [\n  \"...\",\n]\n
[env]\nrequires = [\n  \"...\",\n]\n
"},{"location":"plugins/environment/reference/#life-cycle","title":"Life cycle","text":"

Whenever an environment is used, the following logic is performed:

Source code in src/hatch/cli/application.py 
def prepare_environment(self, environment: EnvironmentInterface):\n    if not environment.exists():\n        self.env_metadata.reset(environment)\n\n        with self.status(f'Creating environment: {environment.name}'):\n            environment.create()\n\n        if not environment.skip_install:\n            if environment.pre_install_commands:\n                with self.status('Running pre-installation commands'):\n                    self.run_shell_commands(environment, environment.pre_install_commands, source='pre-install')\n\n            if environment.dev_mode:\n                with self.status('Installing project in development mode'):\n                    environment.install_project_dev_mode()\n            else:\n                with self.status('Installing project'):\n                    environment.install_project()\n\n            if environment.post_install_commands:\n                with self.status('Running post-installation commands'):\n                    self.run_shell_commands(environment, environment.post_install_commands, source='post-install')\n\n    new_dep_hash = environment.dependency_hash()\n    current_dep_hash = self.env_metadata.dependency_hash(environment)\n    if new_dep_hash != current_dep_hash:\n        with self.status('Checking dependencies'):\n            dependencies_in_sync = environment.dependencies_in_sync()\n\n        if not dependencies_in_sync:\n            with self.status('Syncing dependencies'):\n                environment.sync_dependencies()\n                new_dep_hash = environment.dependency_hash()\n\n        self.env_metadata.update_dependency_hash(environment, new_dep_hash)\n
"},{"location":"plugins/environment/reference/#build-environments","title":"Build environments","text":"

All environment types should offer support for a special sub-environment in which projects can be built. This environment is used in the following scenarios:

"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface","title":"EnvironmentInterface","text":"

Example usage:

plugin.py hooks.py 
    from hatch.env.plugin.interface import EnvironmentInterface\n\n\n    class SpecialEnvironment(EnvironmentInterface):\n        PLUGIN_NAME = 'special'\n        ...\n
    from hatchling.plugin import hookimpl\n\n    from .plugin import SpecialEnvironment\n\n\n    @hookimpl\n    def hatch_register_environment():\n        return SpecialEnvironment\n
Source code in src/hatch/env/plugin/interface.py 
class EnvironmentInterface(ABC):\n    \"\"\"\n    Example usage:\n\n    ```python tab=\"plugin.py\"\n        from hatch.env.plugin.interface import EnvironmentInterface\n\n\n        class SpecialEnvironment(EnvironmentInterface):\n            PLUGIN_NAME = 'special'\n            ...\n    ```\n\n    ```python tab=\"hooks.py\"\n        from hatchling.plugin import hookimpl\n\n        from .plugin import SpecialEnvironment\n\n\n        @hookimpl\n        def hatch_register_environment():\n            return SpecialEnvironment\n    ```\n    \"\"\"\n\n    PLUGIN_NAME = ''\n    \"\"\"The name used for selection.\"\"\"\n\n    def __init__(\n        self,\n        root,\n        metadata,\n        name,\n        config,\n        matrix_variables,\n        data_directory,\n        isolated_data_directory,\n        platform,\n        verbosity,\n        app=None,\n    ):\n        self.__root = root\n        self.__metadata = metadata\n        self.__name = name\n        self.__config = config\n        self.__matrix_variables = matrix_variables\n        self.__data_directory = data_directory\n        self.__isolated_data_directory = isolated_data_directory\n        self.__platform = platform\n        self.__verbosity = verbosity\n        self.__app = app\n        self.__context = None\n\n        self._system_python = None\n        self._env_vars = None\n        self._env_include = None\n        self._env_exclude = None\n        self._environment_dependencies_complex = None\n        self._environment_dependencies = None\n        self._dependencies_complex = None\n        self._dependencies = None\n        self._platforms = None\n        self._skip_install = None\n        self._dev_mode = None\n        self._features = None\n        self._description = None\n        self._scripts = None\n        self._pre_install_commands = None\n        self._post_install_commands = None\n\n    @property\n    def matrix_variables(self):\n        return self.__matrix_variables\n\n    @property\n    def app(self):\n        \"\"\"\n        An instance of [Application](../utilities.md#hatchling.bridge.app.Application).\n        \"\"\"\n        if self.__app is None:\n            from hatchling.bridge.app import Application\n\n            self.__app = Application().get_safe_application()\n\n        return self.__app\n\n    @property\n    def context(self):\n        if self.__context is None:\n            self.__context = self.get_context()\n\n        return self.__context\n\n    @property\n    def verbosity(self):\n        return self.__verbosity\n\n    @property\n    def root(self):\n        \"\"\"\n        The root of the project tree as a path-like object.\n        \"\"\"\n        return self.__root\n\n    @property\n    def metadata(self):\n        return self.__metadata\n\n    @property\n    def name(self) -> str:\n        \"\"\"\n        The name of the environment.\n        \"\"\"\n        return self.__name\n\n    @property\n    def platform(self):\n        \"\"\"\n        An instance of [Platform](../utilities.md#hatch.utils.platform.Platform).\n        \"\"\"\n        return self.__platform\n\n    @property\n    def data_directory(self):\n        \"\"\"\n        The [directory](../../config/hatch.md#environments) this plugin should use for storage as a path-like object.\n        If the user has not configured one then this will be the same as the\n        [isolated data directory](reference.md#hatch.env.plugin.interface.EnvironmentInterface.isolated_data_directory).\n        \"\"\"\n        return self.__data_directory\n\n    @property\n    def isolated_data_directory(self):\n        \"\"\"\n        The default [directory](../../config/hatch.md#environments) reserved exclusively for this plugin as a path-like\n        object.\n        \"\"\"\n        return self.__isolated_data_directory\n\n    @property\n    def config(self) -> dict:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.envs.<ENV_NAME>]\n        ```\n        \"\"\"\n        return self.__config\n\n    @property\n    def system_python(self):\n        if self._system_python is None:\n            system_python = os.environ.get(AppEnvVars.PYTHON)\n            if system_python == 'self':\n                system_python = sys.executable\n\n            system_python = (\n                system_python\n                or self.platform.modules.shutil.which('python')\n                or self.platform.modules.shutil.which('python3')\n                or sys.executable\n            )\n            if not isabs(system_python):\n                system_python = self.platform.modules.shutil.which(system_python)\n\n            self._system_python = system_python\n\n        return self._system_python\n\n    @property\n    def env_vars(self) -> dict:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.envs.<ENV_NAME>.env-vars]\n        ```\n        \"\"\"\n        if self._env_vars is None:\n            env_vars = self.config.get('env-vars', {})\n            if not isinstance(env_vars, dict):\n                message = f'Field `tool.hatch.envs.{self.name}.env-vars` must be a mapping'\n                raise TypeError(message)\n\n            for key, value in env_vars.items():\n                if not isinstance(value, str):\n                    message = (\n                        f'Environment variable `{key}` of field `tool.hatch.envs.{self.name}.env-vars` must be a string'\n                    )\n                    raise TypeError(message)\n\n            new_env_vars = {}\n            with self.metadata.context.apply_context(self.context):\n                for key, value in env_vars.items():\n                    new_env_vars[key] = self.metadata.context.format(value)\n\n            new_env_vars[AppEnvVars.ENV_ACTIVE] = self.name\n            self._env_vars = new_env_vars\n\n        return self._env_vars\n\n    @property\n    def env_include(self) -> list[str]:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.envs.<ENV_NAME>]\n        env-include = [...]\n        ```\n        \"\"\"\n        if self._env_include is None:\n            env_include = self.config.get('env-include', [])\n            if not isinstance(env_include, list):\n                message = f'Field `tool.hatch.envs.{self.name}.env-include` must be an array'\n                raise TypeError(message)\n\n            for i, pattern in enumerate(env_include, 1):\n                if not isinstance(pattern, str):\n                    message = f'Pattern #{i} of field `tool.hatch.envs.{self.name}.env-include` must be a string'\n                    raise TypeError(message)\n\n            if env_include:\n                self._env_include = ['HATCH_BUILD_*', *env_include]\n            else:\n                self._env_include = env_include\n\n        return self._env_include\n\n    @property\n    def env_exclude(self) -> list[str]:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.envs.<ENV_NAME>]\n        env-exclude = [...]\n        ```\n        \"\"\"\n        if self._env_exclude is None:\n            env_exclude = self.config.get('env-exclude', [])\n            if not isinstance(env_exclude, list):\n                message = f'Field `tool.hatch.envs.{self.name}.env-exclude` must be an array'\n                raise TypeError(message)\n\n            for i, pattern in enumerate(env_exclude, 1):\n                if not isinstance(pattern, str):\n                    message = f'Pattern #{i} of field `tool.hatch.envs.{self.name}.env-exclude` must be a string'\n                    raise TypeError(message)\n\n            self._env_exclude = env_exclude\n\n        return self._env_exclude\n\n    @property\n    def environment_dependencies_complex(self):\n        if self._environment_dependencies_complex is None:\n            from packaging.requirements import InvalidRequirement, Requirement\n\n            dependencies_complex = []\n            with self.apply_context():\n                for option in ('dependencies', 'extra-dependencies'):\n                    dependencies = self.config.get(option, [])\n                    if not isinstance(dependencies, list):\n                        message = f'Field `tool.hatch.envs.{self.name}.{option}` must be an array'\n                        raise TypeError(message)\n\n                    for i, entry in enumerate(dependencies, 1):\n                        if not isinstance(entry, str):\n                            message = (\n                                f'Dependency #{i} of field `tool.hatch.envs.{self.name}.{option}` must be a string'\n                            )\n                            raise TypeError(message)\n\n                        try:\n                            dependencies_complex.append(Requirement(self.metadata.context.format(entry)))\n                        except InvalidRequirement as e:\n                            message = f'Dependency #{i} of field `tool.hatch.envs.{self.name}.{option}` is invalid: {e}'\n                            raise ValueError(message) from None\n\n            self._environment_dependencies_complex = dependencies_complex\n\n        return self._environment_dependencies_complex\n\n    @property\n    def environment_dependencies(self) -> list[str]:\n        \"\"\"\n        The list of all [environment dependencies](../../config/environment/overview.md#dependencies).\n        \"\"\"\n        if self._environment_dependencies is None:\n            self._environment_dependencies = [str(dependency) for dependency in self.environment_dependencies_complex]\n\n        return self._environment_dependencies\n\n    @property\n    def dependencies_complex(self):\n        if self._dependencies_complex is None:\n            all_dependencies_complex = list(self.environment_dependencies_complex)\n\n            # Ensure these are checked last to speed up initial environment creation since\n            # they will already be installed along with the project\n            if (not self.skip_install and self.dev_mode) or self.features:\n                from hatch.utils.dep import get_project_dependencies_complex\n\n                dependencies_complex, optional_dependencies_complex = get_project_dependencies_complex(self)\n\n                if not self.skip_install and self.dev_mode:\n                    all_dependencies_complex.extend(dependencies_complex.values())\n\n                for feature in self.features:\n                    if feature not in optional_dependencies_complex:\n                        message = (\n                            f'Feature `{feature}` of field `tool.hatch.envs.{self.name}.features` is not '\n                            f'defined in the dynamic field `project.optional-dependencies`'\n                        )\n                        raise ValueError(message)\n\n                    all_dependencies_complex.extend(optional_dependencies_complex[feature].values())\n\n            self._dependencies_complex = all_dependencies_complex\n\n        return self._dependencies_complex\n\n    @property\n    def dependencies(self) -> list[str]:\n        \"\"\"\n        The list of all [project dependencies](../../config/metadata.md#dependencies) (if\n        [installed](../../config/environment/overview.md#skip-install) and in\n        [dev mode](../../config/environment/overview.md#dev-mode)), selected\n        [optional dependencies](../../config/environment/overview.md#features), and\n        [environment dependencies](../../config/environment/overview.md#dependencies).\n        \"\"\"\n        if self._dependencies is None:\n            self._dependencies = [str(dependency) for dependency in self.dependencies_complex]\n\n        return self._dependencies\n\n    @property\n    def platforms(self) -> list[str]:\n        \"\"\"\n        All names are stored as their lower-cased version.\n\n        ```toml config-example\n        [tool.hatch.envs.<ENV_NAME>]\n        platforms = [...]\n        ```\n        \"\"\"\n        if self._platforms is None:\n            platforms = self.config.get('platforms', [])\n            if not isinstance(platforms, list):\n                message = f'Field `tool.hatch.envs.{self.name}.platforms` must be an array'\n                raise TypeError(message)\n\n            for i, command in enumerate(platforms, 1):\n                if not isinstance(command, str):\n                    message = f'Platform #{i} of field `tool.hatch.envs.{self.name}.platforms` must be a string'\n                    raise TypeError(message)\n\n            self._platforms = [platform.lower() for platform in platforms]\n\n        return self._platforms\n\n    @property\n    def skip_install(self) -> bool:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.envs.<ENV_NAME>]\n        skip-install = ...\n        ```\n        \"\"\"\n        if self._skip_install is None:\n            skip_install = self.config.get('skip-install', not self.metadata.has_project_file())\n            if not isinstance(skip_install, bool):\n                message = f'Field `tool.hatch.envs.{self.name}.skip-install` must be a boolean'\n                raise TypeError(message)\n\n            self._skip_install = skip_install\n\n        return self._skip_install\n\n    @property\n    def dev_mode(self) -> bool:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.envs.<ENV_NAME>]\n        dev-mode = ...\n        ```\n        \"\"\"\n        if self._dev_mode is None:\n            dev_mode = self.config.get('dev-mode', True)\n            if not isinstance(dev_mode, bool):\n                message = f'Field `tool.hatch.envs.{self.name}.dev-mode` must be a boolean'\n                raise TypeError(message)\n\n            self._dev_mode = dev_mode\n\n        return self._dev_mode\n\n    @property\n    def features(self):\n        if self._features is None:\n            from hatchling.metadata.utils import normalize_project_name\n\n            features = self.config.get('features', [])\n            if not isinstance(features, list):\n                message = f'Field `tool.hatch.envs.{self.name}.features` must be an array of strings'\n                raise TypeError(message)\n\n            all_features = set()\n            for i, feature in enumerate(features, 1):\n                if not isinstance(feature, str):\n                    message = f'Feature #{i} of field `tool.hatch.envs.{self.name}.features` must be a string'\n                    raise TypeError(message)\n\n                if not feature:\n                    message = f'Feature #{i} of field `tool.hatch.envs.{self.name}.features` cannot be an empty string'\n                    raise ValueError(message)\n\n                normalized_feature = (\n                    feature\n                    if self.metadata.hatch.metadata.allow_ambiguous_features\n                    else normalize_project_name(feature)\n                )\n                if (\n                    not self.metadata.hatch.metadata.hook_config\n                    and normalized_feature not in self.metadata.core.optional_dependencies\n                ):\n                    message = (\n                        f'Feature `{normalized_feature}` of field `tool.hatch.envs.{self.name}.features` is not '\n                        f'defined in field `project.optional-dependencies`'\n                    )\n                    raise ValueError(message)\n\n                all_features.add(normalized_feature)\n\n            self._features = sorted(all_features)\n\n        return self._features\n\n    @property\n    def description(self) -> str:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.envs.<ENV_NAME>]\n        description = ...\n        ```\n        \"\"\"\n        if self._description is None:\n            description = self.config.get('description', '')\n            if not isinstance(description, str):\n                message = f'Field `tool.hatch.envs.{self.name}.description` must be a string'\n                raise TypeError(message)\n\n            self._description = description\n\n        return self._description\n\n    @property\n    def scripts(self):\n        if self._scripts is None:\n            script_config = self.config.get('scripts', {})\n            if not isinstance(script_config, dict):\n                message = f'Field `tool.hatch.envs.{self.name}.scripts` must be a table'\n                raise TypeError(message)\n\n            config = {}\n\n            for name, data in script_config.items():\n                if ' ' in name:\n                    message = (\n                        f'Script name `{name}` in field `tool.hatch.envs.{self.name}.scripts` must not contain spaces'\n                    )\n                    raise ValueError(message)\n\n                commands = []\n\n                if isinstance(data, str):\n                    commands.append(data)\n                elif isinstance(data, list):\n                    for i, command in enumerate(data, 1):\n                        if not isinstance(command, str):\n                            message = (\n                                f'Command #{i} in field `tool.hatch.envs.{self.name}.scripts.{name}` must be a string'\n                            )\n                            raise TypeError(message)\n\n                        commands.append(command)\n                else:\n                    message = (\n                        f'Field `tool.hatch.envs.{self.name}.scripts.{name}` must be a string or an array of strings'\n                    )\n                    raise TypeError(message)\n\n                config[name] = commands\n\n            seen = {}\n            active = []\n            for script_name, commands in config.items():\n                commands[:] = expand_script_commands(self.name, script_name, commands, config, seen, active)\n\n            self._scripts = config\n\n        return self._scripts\n\n    @property\n    def pre_install_commands(self):\n        if self._pre_install_commands is None:\n            pre_install_commands = self.config.get('pre-install-commands', [])\n            if not isinstance(pre_install_commands, list):\n                message = f'Field `tool.hatch.envs.{self.name}.pre-install-commands` must be an array'\n                raise TypeError(message)\n\n            for i, command in enumerate(pre_install_commands, 1):\n                if not isinstance(command, str):\n                    message = (\n                        f'Command #{i} of field `tool.hatch.envs.{self.name}.pre-install-commands` must be a string'\n                    )\n                    raise TypeError(message)\n\n            self._pre_install_commands = list(pre_install_commands)\n\n        return self._pre_install_commands\n\n    @property\n    def post_install_commands(self):\n        if self._post_install_commands is None:\n            post_install_commands = self.config.get('post-install-commands', [])\n            if not isinstance(post_install_commands, list):\n                message = f'Field `tool.hatch.envs.{self.name}.post-install-commands` must be an array'\n                raise TypeError(message)\n\n            for i, command in enumerate(post_install_commands, 1):\n                if not isinstance(command, str):\n                    message = (\n                        f'Command #{i} of field `tool.hatch.envs.{self.name}.post-install-commands` must be a string'\n                    )\n                    raise TypeError(message)\n\n            self._post_install_commands = list(post_install_commands)\n\n        return self._post_install_commands\n\n    def activate(self):\n        \"\"\"\n        A convenience method called when using the environment as a context manager:\n\n        ```python\n        with environment: ...\n        ```\n        \"\"\"\n\n    def deactivate(self):\n        \"\"\"\n        A convenience method called after using the environment as a context manager:\n\n        ```python\n        with environment: ...\n        ```\n        \"\"\"\n\n    @abstractmethod\n    def find(self):\n        \"\"\"\n        :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n        This should return information about how to locate the environment or represent its ID in\n        some way. Additionally, this is expected to return something even if the environment is\n        [incompatible](reference.md#hatch.env.plugin.interface.EnvironmentInterface.check_compatibility).\n        \"\"\"\n\n    @abstractmethod\n    def create(self):\n        \"\"\"\n        :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n        This should perform the necessary steps to set up the environment.\n        \"\"\"\n\n    @abstractmethod\n    def remove(self):\n        \"\"\"\n        :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n        This should perform the necessary steps to completely remove the environment from the system and will only\n        be triggered manually by users with the [`env remove`](../../cli/reference.md#hatch-env-remove) or\n        [`env prune`](../../cli/reference.md#hatch-env-prune) commands.\n\n        If the\n        [build environment](reference.md#hatch.env.plugin.interface.EnvironmentInterface.build_environment)\n        has a caching mechanism, this should remove that as well.\n        \"\"\"\n\n    @abstractmethod\n    def exists(self) -> bool:\n        \"\"\"\n        :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n        This should indicate whether or not the environment has already been created.\n        \"\"\"\n\n    @abstractmethod\n    def install_project(self):\n        \"\"\"\n        :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n        This should install the project in the environment.\n        \"\"\"\n\n    @abstractmethod\n    def install_project_dev_mode(self):\n        \"\"\"\n        :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n        This should install the project in the environment such that the environment\n        always reflects the current state of the project.\n        \"\"\"\n\n    @abstractmethod\n    def dependencies_in_sync(self) -> bool:\n        \"\"\"\n        :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n        This should indicate whether or not the environment is compatible with the current\n        [dependencies](reference.md#hatch.env.plugin.interface.EnvironmentInterface.dependencies).\n        \"\"\"\n\n    @abstractmethod\n    def sync_dependencies(self):\n        \"\"\"\n        :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n        This should install the\n        [dependencies](reference.md#hatch.env.plugin.interface.EnvironmentInterface.dependencies)\n        in the environment.\n        \"\"\"\n\n    def dependency_hash(self):\n        \"\"\"\n        This should return a hash of the environment's\n        [dependencies](reference.md#hatch.env.plugin.interface.EnvironmentInterface.dependencies)\n        and any other data that is handled by the\n        [sync_dependencies](reference.md#hatch.env.plugin.interface.EnvironmentInterface.sync_dependencies)\n        and\n        [dependencies_in_sync](reference.md#hatch.env.plugin.interface.EnvironmentInterface.dependencies_in_sync)\n        methods.\n        \"\"\"\n        from hatch.utils.dep import hash_dependencies\n\n        return hash_dependencies(self.dependencies_complex)\n\n    @contextmanager\n    def build_environment(\n        self,\n        dependencies: list[str],  # noqa: ARG002\n    ):\n        \"\"\"\n        This should set up an isolated environment in which to [`build`](../../cli/reference.md#hatch-build) the project\n        given a set of dependencies and must be a context manager:\n\n        ```python\n        with environment.build_environment([...]): ...\n        ```\n\n        The build environment should reflect any\n        [environment variables](reference.md#hatch.env.plugin.interface.EnvironmentInterface.get_env_vars)\n        the user defined either currently or at the time of\n        [creation](reference.md#hatch.env.plugin.interface.EnvironmentInterface.create).\n        \"\"\"\n        with self.get_env_vars():\n            yield\n\n    def run_builder(\n        self,\n        build_environment,  # noqa: ARG002\n        **kwargs,\n    ):\n        \"\"\"\n        This will be called when the\n        [build environment](reference.md#hatch.env.plugin.interface.EnvironmentInterface.build_environment)\n        is active:\n\n        ```python\n        with environment.build_environment([...]) as build_env:\n            process = environment.run_builder(build_env, ...)\n        ```\n\n        This should return the standard library's\n        [subprocess.CompletedProcess](https://docs.python.org/3/library/subprocess.html#subprocess.CompletedProcess).\n        The command is constructed by passing all keyword arguments to\n        [construct_build_command](reference.md#hatch.env.plugin.interface.EnvironmentInterface.construct_build_command).\n\n        For an example, open the default implementation below:\n        \"\"\"\n        return self.platform.run_command(self.construct_build_command(**kwargs))\n\n    def build_environment_exists(self):  # noqa: PLR6301\n        \"\"\"\n        If the\n        [build environment](reference.md#hatch.env.plugin.interface.EnvironmentInterface.build_environment)\n        has a caching mechanism, this should indicate whether or not it has already been created.\n        \"\"\"\n        return False\n\n    def enter_shell(\n        self,\n        name: str,  # noqa: ARG002\n        path: str,\n        args: Iterable[str],\n    ):\n        \"\"\"\n        Spawn a [shell](../../config/hatch.md#shell) within the environment.\n\n        This should either use\n        [command_context](reference.md#hatch.env.plugin.interface.EnvironmentInterface.command_context)\n        directly or provide the same guarantee.\n        \"\"\"\n        with self.command_context():\n            self.platform.exit_with_command([path, *args])\n\n    def run_shell_command(self, command: str, **kwargs):\n        \"\"\"\n        This should return the standard library's\n        [subprocess.CompletedProcess](https://docs.python.org/3/library/subprocess.html#subprocess.CompletedProcess)\n        and will always be called when the\n        [command_context](reference.md#hatch.env.plugin.interface.EnvironmentInterface.command_context)\n        is active, with the expectation of providing the same guarantee.\n        \"\"\"\n        kwargs.setdefault('shell', True)\n        return self.platform.run_command(command, **kwargs)\n\n    @contextmanager\n    def command_context(self):\n        \"\"\"\n        A context manager that when active should make executed shell commands reflect any\n        [environment variables](reference.md#hatch.env.plugin.interface.EnvironmentInterface.get_env_vars)\n        the user defined either currently or at the time of\n        [creation](reference.md#hatch.env.plugin.interface.EnvironmentInterface.create).\n\n        For an example, open the default implementation below:\n        \"\"\"\n        with self.get_env_vars():\n            yield\n\n    def resolve_commands(self, commands: list[str]):\n        \"\"\"\n        This expands each command into one or more commands based on any\n        [scripts](../../config/environment/overview.md#scripts) that the user defined.\n        \"\"\"\n        for command in commands:\n            yield from self.expand_command(command)\n\n    def expand_command(self, command):\n        possible_script, args, _ignore_exit_code = parse_script_command(command)\n\n        # Indicate undefined\n        if not args:\n            args = None\n\n        with self.apply_context():\n            if possible_script in self.scripts:\n                for cmd in self.scripts[possible_script]:\n                    yield self.metadata.context.format(cmd, args=args).strip()\n            else:\n                yield self.metadata.context.format(command, args=args).strip()\n\n    def construct_build_command(  # noqa: PLR6301\n        self,\n        *,\n        directory=None,\n        targets=(),\n        hooks_only=False,\n        no_hooks=False,\n        clean=False,\n        clean_hooks_after=False,\n        clean_only=False,\n    ):\n        \"\"\"\n        This is the canonical way [`build`](../../cli/reference.md#hatch-build) command options are translated to\n        a subprocess command issued to [builders](../builder/reference.md).\n        \"\"\"\n        command = ['python', '-u', '-m', 'hatchling', 'build']\n\n        if directory:\n            command.extend(('--directory', directory))\n\n        if targets:\n            for target in targets:\n                command.extend(('--target', target))\n\n        if hooks_only:\n            command.append('--hooks-only')\n\n        if no_hooks:\n            command.append('--no-hooks')\n\n        if clean:\n            command.append('--clean')\n\n        if clean_hooks_after:\n            command.append('--clean-hooks-after')\n\n        if clean_only:\n            command.append('--clean-only')\n\n        return command\n\n    def construct_pip_install_command(self, args: list[str]):\n        \"\"\"\n        A convenience method for constructing a [`pip install`](https://pip.pypa.io/en/stable/cli/pip_install/)\n        command with the given verbosity. The default verbosity is set to one less than Hatch's verbosity.\n        \"\"\"\n        command = ['python', '-u', '-m', 'pip', 'install', '--disable-pip-version-check', '--no-python-version-warning']\n\n        # Default to -1 verbosity\n        add_verbosity_flag(command, self.verbosity, adjustment=-1)\n\n        command.extend(args)\n        return command\n\n    def join_command_args(self, args: list[str]):\n        \"\"\"\n        This is used by the [`run`](../../cli/reference.md#hatch-run) command to construct the root command string\n        from the received arguments.\n        \"\"\"\n        return self.platform.join_command_args(args)\n\n    def apply_features(self, requirement: str):\n        \"\"\"\n        A convenience method that applies any user defined [features](../../config/environment/overview.md#features)\n        to the given requirement.\n        \"\"\"\n        if self.features:\n            features = ','.join(self.features)\n            return f'{requirement}[{features}]'\n\n        return requirement\n\n    def check_compatibility(self):\n        \"\"\"\n        This raises an exception if the environment is not compatible with the user's setup. The default behavior\n        checks for [platform compatibility](../../config/environment/overview.md#supported-platforms)\n        and any method override should keep this check.\n\n        This check is never performed if the environment has been\n        [created](reference.md#hatch.env.plugin.interface.EnvironmentInterface.create).\n        \"\"\"\n        if self.platforms and self.platform.name not in self.platforms:\n            message = 'unsupported platform'\n            raise OSError(message)\n\n    def get_env_vars(self) -> EnvVars:\n        \"\"\"\n        Returns a mapping of environment variables that should be available to the environment. The object can\n        be used as a context manager to temporarily apply the environment variables to the current process.\n\n        !!! note\n            The environment variable `HATCH_ENV_ACTIVE` will always be set to the name of the environment.\n        \"\"\"\n        return EnvVars(self.env_vars, self.env_include, self.env_exclude)\n\n    def get_env_var_option(self, option: str) -> str:\n        \"\"\"\n        Returns the value of the upper-cased environment variable `HATCH_ENV_TYPE_<PLUGIN_NAME>_<option>`.\n        \"\"\"\n        return os.environ.get(f'{AppEnvVars.ENV_OPTION_PREFIX}{self.PLUGIN_NAME}_{option}'.upper(), '')\n\n    def get_context(self):\n        \"\"\"\n        Returns a subclass of\n        [EnvironmentContextFormatter](../utilities.md#hatch.env.context.EnvironmentContextFormatter).\n        \"\"\"\n        from hatch.env.context import EnvironmentContextFormatter\n\n        return EnvironmentContextFormatter(self)\n\n    @staticmethod\n    def get_option_types() -> dict:\n        \"\"\"\n        Returns a mapping of supported options to their respective types so that they can be used by\n        [overrides](../../config/environment/advanced.md#option-overrides).\n        \"\"\"\n        return {}\n\n    @contextmanager\n    def apply_context(self):\n        with self.get_env_vars(), self.metadata.context.apply_context(self.context):\n            yield\n\n    def __enter__(self):\n        self.activate()\n        return self\n\n    def __exit__(self, exc_type, exc_value, traceback):\n        self.deactivate()\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.PLUGIN_NAME","title":"PLUGIN_NAME = '' class-attribute instance-attribute","text":"

The name used for selection.

"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.app","title":"app property","text":"

An instance of Application.

"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.root","title":"root property","text":"

The root of the project tree as a path-like object.

"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.name","title":"name: str property","text":"

The name of the environment.

"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.data_directory","title":"data_directory property","text":"

The directory this plugin should use for storage as a path-like object. If the user has not configured one then this will be the same as the isolated data directory.

"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.isolated_data_directory","title":"isolated_data_directory property","text":"

The default directory reserved exclusively for this plugin as a path-like object.

"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.config","title":"config: dict property","text":"pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\n
[envs.<ENV_NAME>]\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.platform","title":"platform property","text":"

An instance of Platform.

"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.environment_dependencies","title":"environment_dependencies: list[str] property","text":"

The list of all environment dependencies.

"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.dependencies","title":"dependencies: list[str] property","text":"

The list of all project dependencies (if installed and in dev mode), selected optional dependencies, and environment dependencies.

"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.env_vars","title":"env_vars: dict property","text":"pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>.env-vars]\n
[envs.<ENV_NAME>.env-vars]\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.env_include","title":"env_include: list[str] property","text":"pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\nenv-include = [...]\n
[envs.<ENV_NAME>]\nenv-include = [...]\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.env_exclude","title":"env_exclude: list[str] property","text":"pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\nenv-exclude = [...]\n
[envs.<ENV_NAME>]\nenv-exclude = [...]\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.platforms","title":"platforms: list[str] property","text":"

All names are stored as their lower-cased version.

pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\nplatforms = [...]\n
[envs.<ENV_NAME>]\nplatforms = [...]\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.skip_install","title":"skip_install: bool property","text":"pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\nskip-install = ...\n
[envs.<ENV_NAME>]\nskip-install = ...\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.dev_mode","title":"dev_mode: bool property","text":"pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\ndev-mode = ...\n
[envs.<ENV_NAME>]\ndev-mode = ...\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.description","title":"description: str property","text":"pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\ndescription = ...\n
[envs.<ENV_NAME>]\ndescription = ...\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.activate","title":"activate()","text":"

A convenience method called when using the environment as a context manager:

with environment: ...\n
Source code in src/hatch/env/plugin/interface.py 
def activate(self):\n    \"\"\"\n    A convenience method called when using the environment as a context manager:\n\n    ```python\n    with environment: ...\n    ```\n    \"\"\"\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.deactivate","title":"deactivate()","text":"

A convenience method called after using the environment as a context manager:

with environment: ...\n
Source code in src/hatch/env/plugin/interface.py 
def deactivate(self):\n    \"\"\"\n    A convenience method called after using the environment as a context manager:\n\n    ```python\n    with environment: ...\n    ```\n    \"\"\"\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.find","title":"find() abstractmethod","text":"

REQUIRED

This should return information about how to locate the environment or represent its ID in some way. Additionally, this is expected to return something even if the environment is incompatible.

Source code in src/hatch/env/plugin/interface.py 
@abstractmethod\ndef find(self):\n    \"\"\"\n    :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n    This should return information about how to locate the environment or represent its ID in\n    some way. Additionally, this is expected to return something even if the environment is\n    [incompatible](reference.md#hatch.env.plugin.interface.EnvironmentInterface.check_compatibility).\n    \"\"\"\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.create","title":"create() abstractmethod","text":"

REQUIRED

This should perform the necessary steps to set up the environment.

Source code in src/hatch/env/plugin/interface.py 
@abstractmethod\ndef create(self):\n    \"\"\"\n    :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n    This should perform the necessary steps to set up the environment.\n    \"\"\"\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.remove","title":"remove() abstractmethod","text":"

REQUIRED

This should perform the necessary steps to completely remove the environment from the system and will only be triggered manually by users with the env remove or env prune commands.

If the build environment has a caching mechanism, this should remove that as well.

Source code in src/hatch/env/plugin/interface.py 
@abstractmethod\ndef remove(self):\n    \"\"\"\n    :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n    This should perform the necessary steps to completely remove the environment from the system and will only\n    be triggered manually by users with the [`env remove`](../../cli/reference.md#hatch-env-remove) or\n    [`env prune`](../../cli/reference.md#hatch-env-prune) commands.\n\n    If the\n    [build environment](reference.md#hatch.env.plugin.interface.EnvironmentInterface.build_environment)\n    has a caching mechanism, this should remove that as well.\n    \"\"\"\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.exists","title":"exists() -> bool abstractmethod","text":"

REQUIRED

This should indicate whether or not the environment has already been created.

Source code in src/hatch/env/plugin/interface.py 
@abstractmethod\ndef exists(self) -> bool:\n    \"\"\"\n    :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n    This should indicate whether or not the environment has already been created.\n    \"\"\"\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.install_project","title":"install_project() abstractmethod","text":"

REQUIRED

This should install the project in the environment.

Source code in src/hatch/env/plugin/interface.py 
@abstractmethod\ndef install_project(self):\n    \"\"\"\n    :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n    This should install the project in the environment.\n    \"\"\"\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.install_project_dev_mode","title":"install_project_dev_mode() abstractmethod","text":"

REQUIRED

This should install the project in the environment such that the environment always reflects the current state of the project.

Source code in src/hatch/env/plugin/interface.py 
@abstractmethod\ndef install_project_dev_mode(self):\n    \"\"\"\n    :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n    This should install the project in the environment such that the environment\n    always reflects the current state of the project.\n    \"\"\"\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.dependencies_in_sync","title":"dependencies_in_sync() -> bool abstractmethod","text":"

REQUIRED

This should indicate whether or not the environment is compatible with the current dependencies.

Source code in src/hatch/env/plugin/interface.py 
@abstractmethod\ndef dependencies_in_sync(self) -> bool:\n    \"\"\"\n    :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n    This should indicate whether or not the environment is compatible with the current\n    [dependencies](reference.md#hatch.env.plugin.interface.EnvironmentInterface.dependencies).\n    \"\"\"\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.sync_dependencies","title":"sync_dependencies() abstractmethod","text":"

REQUIRED

This should install the dependencies in the environment.

Source code in src/hatch/env/plugin/interface.py 
@abstractmethod\ndef sync_dependencies(self):\n    \"\"\"\n    :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n    This should install the\n    [dependencies](reference.md#hatch.env.plugin.interface.EnvironmentInterface.dependencies)\n    in the environment.\n    \"\"\"\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.dependency_hash","title":"dependency_hash()","text":"

This should return a hash of the environment's dependencies and any other data that is handled by the sync_dependencies and dependencies_in_sync methods.

Source code in src/hatch/env/plugin/interface.py 
def dependency_hash(self):\n    \"\"\"\n    This should return a hash of the environment's\n    [dependencies](reference.md#hatch.env.plugin.interface.EnvironmentInterface.dependencies)\n    and any other data that is handled by the\n    [sync_dependencies](reference.md#hatch.env.plugin.interface.EnvironmentInterface.sync_dependencies)\n    and\n    [dependencies_in_sync](reference.md#hatch.env.plugin.interface.EnvironmentInterface.dependencies_in_sync)\n    methods.\n    \"\"\"\n    from hatch.utils.dep import hash_dependencies\n\n    return hash_dependencies(self.dependencies_complex)\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.build_environment","title":"build_environment(dependencies: list[str])","text":"

This should set up an isolated environment in which to build the project given a set of dependencies and must be a context manager:

with environment.build_environment([...]): ...\n

The build environment should reflect any environment variables the user defined either currently or at the time of creation.

Source code in src/hatch/env/plugin/interface.py 
@contextmanager\ndef build_environment(\n    self,\n    dependencies: list[str],  # noqa: ARG002\n):\n    \"\"\"\n    This should set up an isolated environment in which to [`build`](../../cli/reference.md#hatch-build) the project\n    given a set of dependencies and must be a context manager:\n\n    ```python\n    with environment.build_environment([...]): ...\n    ```\n\n    The build environment should reflect any\n    [environment variables](reference.md#hatch.env.plugin.interface.EnvironmentInterface.get_env_vars)\n    the user defined either currently or at the time of\n    [creation](reference.md#hatch.env.plugin.interface.EnvironmentInterface.create).\n    \"\"\"\n    with self.get_env_vars():\n        yield\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.build_environment_exists","title":"build_environment_exists()","text":"

If the build environment has a caching mechanism, this should indicate whether or not it has already been created.

Source code in src/hatch/env/plugin/interface.py 
def build_environment_exists(self):  # noqa: PLR6301\n    \"\"\"\n    If the\n    [build environment](reference.md#hatch.env.plugin.interface.EnvironmentInterface.build_environment)\n    has a caching mechanism, this should indicate whether or not it has already been created.\n    \"\"\"\n    return False\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.run_builder","title":"run_builder(build_environment, **kwargs)","text":"

This will be called when the build environment is active:

with environment.build_environment([...]) as build_env:\n    process = environment.run_builder(build_env, ...)\n

This should return the standard library's subprocess.CompletedProcess. The command is constructed by passing all keyword arguments to construct_build_command.

For an example, open the default implementation below:

Source code in src/hatch/env/plugin/interface.py 
def run_builder(\n    self,\n    build_environment,  # noqa: ARG002\n    **kwargs,\n):\n    \"\"\"\n    This will be called when the\n    [build environment](reference.md#hatch.env.plugin.interface.EnvironmentInterface.build_environment)\n    is active:\n\n    ```python\n    with environment.build_environment([...]) as build_env:\n        process = environment.run_builder(build_env, ...)\n    ```\n\n    This should return the standard library's\n    [subprocess.CompletedProcess](https://docs.python.org/3/library/subprocess.html#subprocess.CompletedProcess).\n    The command is constructed by passing all keyword arguments to\n    [construct_build_command](reference.md#hatch.env.plugin.interface.EnvironmentInterface.construct_build_command).\n\n    For an example, open the default implementation below:\n    \"\"\"\n    return self.platform.run_command(self.construct_build_command(**kwargs))\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.construct_build_command","title":"construct_build_command(*, directory=None, targets=(), hooks_only=False, no_hooks=False, clean=False, clean_hooks_after=False, clean_only=False)","text":"

This is the canonical way build command options are translated to a subprocess command issued to builders.

Source code in src/hatch/env/plugin/interface.py 
def construct_build_command(  # noqa: PLR6301\n    self,\n    *,\n    directory=None,\n    targets=(),\n    hooks_only=False,\n    no_hooks=False,\n    clean=False,\n    clean_hooks_after=False,\n    clean_only=False,\n):\n    \"\"\"\n    This is the canonical way [`build`](../../cli/reference.md#hatch-build) command options are translated to\n    a subprocess command issued to [builders](../builder/reference.md).\n    \"\"\"\n    command = ['python', '-u', '-m', 'hatchling', 'build']\n\n    if directory:\n        command.extend(('--directory', directory))\n\n    if targets:\n        for target in targets:\n            command.extend(('--target', target))\n\n    if hooks_only:\n        command.append('--hooks-only')\n\n    if no_hooks:\n        command.append('--no-hooks')\n\n    if clean:\n        command.append('--clean')\n\n    if clean_hooks_after:\n        command.append('--clean-hooks-after')\n\n    if clean_only:\n        command.append('--clean-only')\n\n    return command\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.command_context","title":"command_context()","text":"

A context manager that when active should make executed shell commands reflect any environment variables the user defined either currently or at the time of creation.

For an example, open the default implementation below:

Source code in src/hatch/env/plugin/interface.py 
@contextmanager\ndef command_context(self):\n    \"\"\"\n    A context manager that when active should make executed shell commands reflect any\n    [environment variables](reference.md#hatch.env.plugin.interface.EnvironmentInterface.get_env_vars)\n    the user defined either currently or at the time of\n    [creation](reference.md#hatch.env.plugin.interface.EnvironmentInterface.create).\n\n    For an example, open the default implementation below:\n    \"\"\"\n    with self.get_env_vars():\n        yield\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.enter_shell","title":"enter_shell(name: str, path: str, args: Iterable[str])","text":"

Spawn a shell within the environment.

This should either use command_context directly or provide the same guarantee.

Source code in src/hatch/env/plugin/interface.py 
def enter_shell(\n    self,\n    name: str,  # noqa: ARG002\n    path: str,\n    args: Iterable[str],\n):\n    \"\"\"\n    Spawn a [shell](../../config/hatch.md#shell) within the environment.\n\n    This should either use\n    [command_context](reference.md#hatch.env.plugin.interface.EnvironmentInterface.command_context)\n    directly or provide the same guarantee.\n    \"\"\"\n    with self.command_context():\n        self.platform.exit_with_command([path, *args])\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.run_shell_command","title":"run_shell_command(command: str, **kwargs)","text":"

This should return the standard library's subprocess.CompletedProcess and will always be called when the command_context is active, with the expectation of providing the same guarantee.

Source code in src/hatch/env/plugin/interface.py 
def run_shell_command(self, command: str, **kwargs):\n    \"\"\"\n    This should return the standard library's\n    [subprocess.CompletedProcess](https://docs.python.org/3/library/subprocess.html#subprocess.CompletedProcess)\n    and will always be called when the\n    [command_context](reference.md#hatch.env.plugin.interface.EnvironmentInterface.command_context)\n    is active, with the expectation of providing the same guarantee.\n    \"\"\"\n    kwargs.setdefault('shell', True)\n    return self.platform.run_command(command, **kwargs)\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.resolve_commands","title":"resolve_commands(commands: list[str])","text":"

This expands each command into one or more commands based on any scripts that the user defined.

Source code in src/hatch/env/plugin/interface.py 
def resolve_commands(self, commands: list[str]):\n    \"\"\"\n    This expands each command into one or more commands based on any\n    [scripts](../../config/environment/overview.md#scripts) that the user defined.\n    \"\"\"\n    for command in commands:\n        yield from self.expand_command(command)\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.get_env_vars","title":"get_env_vars() -> EnvVars","text":"

Returns a mapping of environment variables that should be available to the environment. The object can be used as a context manager to temporarily apply the environment variables to the current process.

Note

The environment variable HATCH_ENV_ACTIVE will always be set to the name of the environment.

Source code in src/hatch/env/plugin/interface.py 
def get_env_vars(self) -> EnvVars:\n    \"\"\"\n    Returns a mapping of environment variables that should be available to the environment. The object can\n    be used as a context manager to temporarily apply the environment variables to the current process.\n\n    !!! note\n        The environment variable `HATCH_ENV_ACTIVE` will always be set to the name of the environment.\n    \"\"\"\n    return EnvVars(self.env_vars, self.env_include, self.env_exclude)\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.apply_features","title":"apply_features(requirement: str)","text":"

A convenience method that applies any user defined features to the given requirement.

Source code in src/hatch/env/plugin/interface.py 
def apply_features(self, requirement: str):\n    \"\"\"\n    A convenience method that applies any user defined [features](../../config/environment/overview.md#features)\n    to the given requirement.\n    \"\"\"\n    if self.features:\n        features = ','.join(self.features)\n        return f'{requirement}[{features}]'\n\n    return requirement\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.construct_pip_install_command","title":"construct_pip_install_command(args: list[str])","text":"

A convenience method for constructing a pip install command with the given verbosity. The default verbosity is set to one less than Hatch's verbosity.

Source code in src/hatch/env/plugin/interface.py 
def construct_pip_install_command(self, args: list[str]):\n    \"\"\"\n    A convenience method for constructing a [`pip install`](https://pip.pypa.io/en/stable/cli/pip_install/)\n    command with the given verbosity. The default verbosity is set to one less than Hatch's verbosity.\n    \"\"\"\n    command = ['python', '-u', '-m', 'pip', 'install', '--disable-pip-version-check', '--no-python-version-warning']\n\n    # Default to -1 verbosity\n    add_verbosity_flag(command, self.verbosity, adjustment=-1)\n\n    command.extend(args)\n    return command\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.join_command_args","title":"join_command_args(args: list[str])","text":"

This is used by the run command to construct the root command string from the received arguments.

Source code in src/hatch/env/plugin/interface.py 
def join_command_args(self, args: list[str]):\n    \"\"\"\n    This is used by the [`run`](../../cli/reference.md#hatch-run) command to construct the root command string\n    from the received arguments.\n    \"\"\"\n    return self.platform.join_command_args(args)\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.check_compatibility","title":"check_compatibility()","text":"

This raises an exception if the environment is not compatible with the user's setup. The default behavior checks for platform compatibility and any method override should keep this check.

This check is never performed if the environment has been created.

Source code in src/hatch/env/plugin/interface.py 
def check_compatibility(self):\n    \"\"\"\n    This raises an exception if the environment is not compatible with the user's setup. The default behavior\n    checks for [platform compatibility](../../config/environment/overview.md#supported-platforms)\n    and any method override should keep this check.\n\n    This check is never performed if the environment has been\n    [created](reference.md#hatch.env.plugin.interface.EnvironmentInterface.create).\n    \"\"\"\n    if self.platforms and self.platform.name not in self.platforms:\n        message = 'unsupported platform'\n        raise OSError(message)\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.get_option_types","title":"get_option_types() -> dict staticmethod","text":"

Returns a mapping of supported options to their respective types so that they can be used by overrides.

Source code in src/hatch/env/plugin/interface.py 
@staticmethod\ndef get_option_types() -> dict:\n    \"\"\"\n    Returns a mapping of supported options to their respective types so that they can be used by\n    [overrides](../../config/environment/advanced.md#option-overrides).\n    \"\"\"\n    return {}\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.get_env_var_option","title":"get_env_var_option(option: str) -> str","text":"

Returns the value of the upper-cased environment variable HATCH_ENV_TYPE_<PLUGIN_NAME>_<option>.

Source code in src/hatch/env/plugin/interface.py 
def get_env_var_option(self, option: str) -> str:\n    \"\"\"\n    Returns the value of the upper-cased environment variable `HATCH_ENV_TYPE_<PLUGIN_NAME>_<option>`.\n    \"\"\"\n    return os.environ.get(f'{AppEnvVars.ENV_OPTION_PREFIX}{self.PLUGIN_NAME}_{option}'.upper(), '')\n
"},{"location":"plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.get_context","title":"get_context()","text":"

Returns a subclass of EnvironmentContextFormatter.

Source code in src/hatch/env/plugin/interface.py 
def get_context(self):\n    \"\"\"\n    Returns a subclass of\n    [EnvironmentContextFormatter](../utilities.md#hatch.env.context.EnvironmentContextFormatter).\n    \"\"\"\n    from hatch.env.context import EnvironmentContextFormatter\n\n    return EnvironmentContextFormatter(self)\n
"},{"location":"plugins/environment/virtual/","title":"Virtual environment","text":"

This uses virtual environments backed by the standard virtualenv tool.

"},{"location":"plugins/environment/virtual/#configuration","title":"Configuration","text":"

The environment plugin name is virtual.

pyproject.toml hatch.toml 
[tool.hatch.envs.<ENV_NAME>]\ntype = \"virtual\"\n
[envs.<ENV_NAME>]\ntype = \"virtual\"\n
"},{"location":"plugins/environment/virtual/#options","title":"Options","text":"Option Default Description python The version of Python to find on your system and subsequently use to create the environment, defaulting to the HATCH_PYTHON environment variable, followed by the normal resolution logic. Setting the HATCH_PYTHON environment variable to self will force the use of the Python executable Hatch is running on. For more information, see the documentation. python-sources ['external', 'internal'] This may be set to an array of strings that are either the literal internal or external. External considers only Python executables that are already on PATH. Internal considers only internally managed Python distributions. path An explicit path to the virtual environment. The path may be absolute or relative to the project root. Any environments that inherit this option will also use this path. The environment variable HATCH_ENV_TYPE_VIRTUAL_PATH may be used, which will take precedence. system-packages false Whether or not to give the virtual environment access to the system site-packages directory"},{"location":"plugins/environment/virtual/#location","title":"Location","text":"

The location of environments is determined in the following heuristic order:

  1. The path option
  2. A directory named after the environment within the configured virtual environment directory if the directory resides somewhere within the project root or if it is set to a .virtualenvs directory within the user's home directory
  3. Otherwise, environments are stored within the configured virtual environment directory in a deeply nested structure in order to support multiple projects

Additionally, when the path option is not used, the name of the directory for the default environment will be the normalized project name to provide a more meaningful default shell prompt.

"},{"location":"plugins/environment/virtual/#python-resolution","title":"Python resolution","text":"

Virtual environments necessarily require a parent installation of Python. The following rules determine how the parent is resolved.

The Python choice is determined by the python option followed by the HATCH_PYTHON environment variable. If the choice is via the environment variable, then resolution stops and that path is used unconditionally.

The resolvers will be based on the python-sources option and all resolved interpreters will ensure compatibility with the project's defined Python support.

If a Python version has been chosen then each resolver will try to find an interpreter that satisfies that version.

If no version has been chosen, then each resolver will try to find a version that matches the version of Python that Hatch is currently running on. If not found then each resolver will try to find the highest compatible version.

Note

Some external Python paths are considered unstable and are ignored during resolution. For example, if Hatch is installed via Homebrew then sys.executable will be ignored because the interpreter could change or be removed at any time.

Note

When resolution finds a match using an internally managed distribution and an update is available, the latest distribution will automatically be downloaded before environment creation.

"},{"location":"plugins/environment/virtual/#internal-distributions","title":"Internal distributions","text":"

The following options are recognized for internal Python resolution.

"},{"location":"plugins/environment/virtual/#cpython","title":"CPython","text":"ID 3.7 3.8 3.9 3.10 3.11 3.12

The source of distributions is the python-build-standalone project.

Some distributions have variants that may be configured with the HATCH_PYTHON_VARIANT_<PLATFORM> environment variable where <PLATFORM> is the uppercase version of one of the following:

Platform Options Linux Windows "},{"location":"plugins/environment/virtual/#pypy","title":"PyPy","text":"ID pypy2.7 pypy3.9 pypy3.10

The source of distributions is the PyPy project.

"},{"location":"plugins/environment/virtual/#troubleshooting","title":"Troubleshooting","text":""},{"location":"plugins/environment/virtual/#macos-sip","title":"macOS SIP","text":"

If you need to set linker environment variables like those starting with DYLD_ or LD_, any executable secured by System Integrity Protection that is invoked when running commands will not see those environment variable modifications as macOS strips those.

Hatch interprets such commands as shell commands but deliberately ignores such paths to protected shells. This workaround suffices for the majority of use cases but there are 2 situations in which it may not:

  1. There are no unprotected sh, bash, zsh, nor fish executables found along PATH.
  2. The desired executable is a project's script, and the location of environments contains spaces or is longer than 1241 characters. In this case pip and other installers will create such an entry point with a shebang pointing to /bin/sh (which is protected) to avoid shebang limitations. Rather than changing the location, you could invoke the script as e.g. python -m pytest (if the project supports that method of invocation by shipping a __main__.py).

  1. The shebang length limit is usually 127 but 3 characters surround the executable path: #!<EXE_PATH>\\n \u21a9

"},{"location":"plugins/environment-collector/custom/","title":"Custom environment collector","text":"

This is a custom class in a given Python file that inherits from the EnvironmentCollectorInterface.

"},{"location":"plugins/environment-collector/custom/#configuration","title":"Configuration","text":"

The environment collector plugin name is custom.

pyproject.toml hatch.toml 
[tool.hatch.env.collectors.custom]\n
[env.collectors.custom]\n
"},{"location":"plugins/environment-collector/custom/#options","title":"Options","text":"Option Default Description path hatch_plugins.py The path of the Python file"},{"location":"plugins/environment-collector/custom/#example","title":"Example","text":"hatch_plugins.py 
    from hatch.env.collectors.plugin.interface import EnvironmentCollectorInterface\n\n\n    class CustomEnvironmentCollector(EnvironmentCollectorInterface):\n        ...\n

If multiple subclasses are found, you must define a function named get_environment_collector that returns the desired environment collector.

Note

Any defined PLUGIN_NAME is ignored and will always be custom.

"},{"location":"plugins/environment-collector/default/","title":"Default environment collector","text":"

This adds the default environment with type set to virtual and will always be applied.

"},{"location":"plugins/environment-collector/default/#configuration","title":"Configuration","text":"

The environment collector plugin name is default.

pyproject.toml hatch.toml 
[tool.hatch.env.collectors.default]\n
[env.collectors.default]\n
"},{"location":"plugins/environment-collector/default/#options","title":"Options","text":"

There are no options available currently.

"},{"location":"plugins/environment-collector/reference/","title":"Environment collector plugins","text":"

Environment collectors allow for dynamically modifying environments or adding environments beyond those defined in config. Users can override default values provided by each environment.

"},{"location":"plugins/environment-collector/reference/#known-third-party","title":"Known third-party","text":""},{"location":"plugins/environment-collector/reference/#installation","title":"Installation","text":"

Any required environment collectors that are not built-in must be manually installed alongside Hatch or listed in the tool.hatch.env.requires array for automatic management:

pyproject.toml hatch.toml 
[tool.hatch.env]\nrequires = [\n  \"...\",\n]\n
[env]\nrequires = [\n  \"...\",\n]\n
"},{"location":"plugins/environment-collector/reference/#hatch.env.collectors.plugin.interface.EnvironmentCollectorInterface","title":"EnvironmentCollectorInterface","text":"

Example usage:

plugin.py hooks.py 
    from hatch.env.collectors.plugin.interface import EnvironmentCollectorInterface\n\n\n    class SpecialEnvironmentCollector(EnvironmentCollectorInterface):\n        PLUGIN_NAME = 'special'\n        ...\n
    from hatchling.plugin import hookimpl\n\n    from .plugin import SpecialEnvironmentCollector\n\n\n    @hookimpl\n    def hatch_register_environment_collector():\n        return SpecialEnvironmentCollector\n
Source code in src/hatch/env/collectors/plugin/interface.py 
class EnvironmentCollectorInterface:\n    \"\"\"\n    Example usage:\n\n    ```python tab=\"plugin.py\"\n        from hatch.env.collectors.plugin.interface import EnvironmentCollectorInterface\n\n\n        class SpecialEnvironmentCollector(EnvironmentCollectorInterface):\n            PLUGIN_NAME = 'special'\n            ...\n    ```\n\n    ```python tab=\"hooks.py\"\n        from hatchling.plugin import hookimpl\n\n        from .plugin import SpecialEnvironmentCollector\n\n\n        @hookimpl\n        def hatch_register_environment_collector():\n            return SpecialEnvironmentCollector\n    ```\n    \"\"\"\n\n    PLUGIN_NAME = ''\n    \"\"\"The name used for selection.\"\"\"\n\n    def __init__(self, root, config):\n        self.__root = root\n        self.__config = config\n\n    @property\n    def root(self):\n        \"\"\"\n        The root of the project tree as a path-like object.\n        \"\"\"\n        return self.__root\n\n    @property\n    def config(self) -> dict:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.env.collectors.<PLUGIN_NAME>]\n        ```\n        \"\"\"\n        return self.__config\n\n    def get_initial_config(self) -> dict[str, dict]:  # noqa: PLR6301\n        \"\"\"\n        Returns configuration for environments keyed by the environment or matrix name.\n        \"\"\"\n        return {}\n\n    def finalize_config(self, config: dict[str, dict]):\n        \"\"\"\n        Finalizes configuration for environments keyed by the environment or matrix name. This will override\n        any user-defined settings and any collectors that ran before this call.\n\n        This is called before matrices are turned into concrete environments.\n        \"\"\"\n\n    def finalize_environments(self, config: dict[str, dict]):\n        \"\"\"\n        Finalizes configuration for environments keyed by the environment name. This will override\n        any user-defined settings and any collectors that ran before this call.\n\n        This is called after matrices are turned into concrete environments.\n        \"\"\"\n
"},{"location":"plugins/environment-collector/reference/#hatch.env.collectors.plugin.interface.EnvironmentCollectorInterface.PLUGIN_NAME","title":"PLUGIN_NAME = '' class-attribute instance-attribute","text":"

The name used for selection.

"},{"location":"plugins/environment-collector/reference/#hatch.env.collectors.plugin.interface.EnvironmentCollectorInterface.root","title":"root property","text":"

The root of the project tree as a path-like object.

"},{"location":"plugins/environment-collector/reference/#hatch.env.collectors.plugin.interface.EnvironmentCollectorInterface.config","title":"config: dict property","text":"pyproject.toml hatch.toml 
[tool.hatch.env.collectors.<PLUGIN_NAME>]\n
[env.collectors.<PLUGIN_NAME>]\n
"},{"location":"plugins/environment-collector/reference/#hatch.env.collectors.plugin.interface.EnvironmentCollectorInterface.get_initial_config","title":"get_initial_config() -> dict[str, dict]","text":"

Returns configuration for environments keyed by the environment or matrix name.

Source code in src/hatch/env/collectors/plugin/interface.py 
def get_initial_config(self) -> dict[str, dict]:  # noqa: PLR6301\n    \"\"\"\n    Returns configuration for environments keyed by the environment or matrix name.\n    \"\"\"\n    return {}\n
"},{"location":"plugins/environment-collector/reference/#hatch.env.collectors.plugin.interface.EnvironmentCollectorInterface.finalize_config","title":"finalize_config(config: dict[str, dict])","text":"

Finalizes configuration for environments keyed by the environment or matrix name. This will override any user-defined settings and any collectors that ran before this call.

This is called before matrices are turned into concrete environments.

Source code in src/hatch/env/collectors/plugin/interface.py 
def finalize_config(self, config: dict[str, dict]):\n    \"\"\"\n    Finalizes configuration for environments keyed by the environment or matrix name. This will override\n    any user-defined settings and any collectors that ran before this call.\n\n    This is called before matrices are turned into concrete environments.\n    \"\"\"\n
"},{"location":"plugins/environment-collector/reference/#hatch.env.collectors.plugin.interface.EnvironmentCollectorInterface.finalize_environments","title":"finalize_environments(config: dict[str, dict])","text":"

Finalizes configuration for environments keyed by the environment name. This will override any user-defined settings and any collectors that ran before this call.

This is called after matrices are turned into concrete environments.

Source code in src/hatch/env/collectors/plugin/interface.py 
def finalize_environments(self, config: dict[str, dict]):\n    \"\"\"\n    Finalizes configuration for environments keyed by the environment name. This will override\n    any user-defined settings and any collectors that ran before this call.\n\n    This is called after matrices are turned into concrete environments.\n    \"\"\"\n
"},{"location":"plugins/metadata-hook/custom/","title":"Custom metadata hook","text":"

This is a custom class in a given Python file that inherits from the MetadataHookInterface.

"},{"location":"plugins/metadata-hook/custom/#configuration","title":"Configuration","text":"

The metadata hook plugin name is custom.

pyproject.toml hatch.toml 
[tool.hatch.metadata.hooks.custom]\n
[metadata.hooks.custom]\n
"},{"location":"plugins/metadata-hook/custom/#options","title":"Options","text":"Option Default Description path hatch_build.py The path of the Python file"},{"location":"plugins/metadata-hook/custom/#example","title":"Example","text":"hatch_build.py 
    from hatchling.metadata.plugin.interface import MetadataHookInterface\n\n\n    class CustomMetadataHook(MetadataHookInterface):\n        ...\n

If multiple subclasses are found, you must define a function named get_metadata_hook that returns the desired build hook.

Note

Any defined PLUGIN_NAME is ignored and will always be custom.

"},{"location":"plugins/metadata-hook/reference/","title":"Metadata hook plugins","text":"

Metadata hooks allow for the modification of project metadata after it has been loaded.

"},{"location":"plugins/metadata-hook/reference/#known-third-party","title":"Known third-party","text":""},{"location":"plugins/metadata-hook/reference/#hatchling.metadata.plugin.interface.MetadataHookInterface","title":"MetadataHookInterface","text":"

Example usage:

plugin.py hooks.py 
from hatchling.metadata.plugin.interface import MetadataHookInterface\n\n\nclass SpecialMetadataHook(MetadataHookInterface):\n    PLUGIN_NAME = 'special'\n    ...\n
from hatchling.plugin import hookimpl\n\nfrom .plugin import SpecialMetadataHook\n\n\n@hookimpl\ndef hatch_register_metadata_hook():\n    return SpecialMetadataHook\n
Source code in backend/src/hatchling/metadata/plugin/interface.py 
class MetadataHookInterface(ABC):  # no cov\n    \"\"\"\n    Example usage:\n\n    ```python tab=\"plugin.py\"\n    from hatchling.metadata.plugin.interface import MetadataHookInterface\n\n\n    class SpecialMetadataHook(MetadataHookInterface):\n        PLUGIN_NAME = 'special'\n        ...\n    ```\n\n    ```python tab=\"hooks.py\"\n    from hatchling.plugin import hookimpl\n\n    from .plugin import SpecialMetadataHook\n\n\n    @hookimpl\n    def hatch_register_metadata_hook():\n        return SpecialMetadataHook\n    ```\n    \"\"\"\n\n    PLUGIN_NAME = ''\n    \"\"\"The name used for selection.\"\"\"\n\n    def __init__(self, root: str, config: dict) -> None:\n        self.__root = root\n        self.__config = config\n\n    @property\n    def root(self) -> str:\n        \"\"\"\n        The root of the project tree.\n        \"\"\"\n        return self.__root\n\n    @property\n    def config(self) -> dict:\n        \"\"\"\n        The hook configuration.\n\n        ```toml config-example\n        [tool.hatch.metadata.hooks.<PLUGIN_NAME>]\n        ```\n        \"\"\"\n        return self.__config\n\n    @abstractmethod\n    def update(self, metadata: dict) -> None:\n        \"\"\"\n        This updates the metadata mapping of the `project` table in-place.\n        \"\"\"\n\n    def get_known_classifiers(self) -> list[str]:  # noqa: PLR6301\n        \"\"\"\n        This returns extra classifiers that should be considered valid in addition to the ones known to PyPI.\n        \"\"\"\n        return []\n
"},{"location":"plugins/metadata-hook/reference/#hatchling.metadata.plugin.interface.MetadataHookInterface.PLUGIN_NAME","title":"PLUGIN_NAME = '' class-attribute instance-attribute","text":"

The name used for selection.

"},{"location":"plugins/metadata-hook/reference/#hatchling.metadata.plugin.interface.MetadataHookInterface.root","title":"root: str property","text":"

The root of the project tree.

"},{"location":"plugins/metadata-hook/reference/#hatchling.metadata.plugin.interface.MetadataHookInterface.config","title":"config: dict property","text":"

The hook configuration.

pyproject.toml hatch.toml 
[tool.hatch.metadata.hooks.<PLUGIN_NAME>]\n
[metadata.hooks.<PLUGIN_NAME>]\n
"},{"location":"plugins/metadata-hook/reference/#hatchling.metadata.plugin.interface.MetadataHookInterface.update","title":"update(metadata: dict) -> None abstractmethod","text":"

This updates the metadata mapping of the project table in-place.

Source code in backend/src/hatchling/metadata/plugin/interface.py 
@abstractmethod\ndef update(self, metadata: dict) -> None:\n    \"\"\"\n    This updates the metadata mapping of the `project` table in-place.\n    \"\"\"\n
"},{"location":"plugins/metadata-hook/reference/#hatchling.metadata.plugin.interface.MetadataHookInterface.get_known_classifiers","title":"get_known_classifiers() -> list[str]","text":"

This returns extra classifiers that should be considered valid in addition to the ones known to PyPI.

Source code in backend/src/hatchling/metadata/plugin/interface.py 
def get_known_classifiers(self) -> list[str]:  # noqa: PLR6301\n    \"\"\"\n    This returns extra classifiers that should be considered valid in addition to the ones known to PyPI.\n    \"\"\"\n    return []\n
"},{"location":"plugins/publisher/package-index/","title":"Index publisher","text":"

See the documentation for publishing.

"},{"location":"plugins/publisher/package-index/#configuration","title":"Configuration","text":"

The publisher plugin name is index.

config.toml 
[publish.index]\n
"},{"location":"plugins/publisher/package-index/#options","title":"Options","text":"Flag Config name Description -r/--repo repo The repository with which to publish artifacts -u/--user user The user with which to authenticate -a/--auth auth The credentials to use for authentication --ca-cert ca-cert The path to a CA bundle --client-cert client-cert The path to a client certificate, optionally containing the private key --client-key client-key The path to the client certificate's private key repos A table of named repositories to their respective options"},{"location":"plugins/publisher/package-index/#repositories","title":"Repositories","text":"

All top-level options can be overridden per repository using the repos table with a required url attribute for each repository. The following shows the default configuration:

config.toml 
[publish.index.repos.main]\nurl = \"https://upload.pypi.org/legacy/\"\n\n[publish.index.repos.test]\nurl = \"https://test.pypi.org/legacy/\"\n

The repo and repos options have no effect.

"},{"location":"plugins/publisher/reference/","title":"Publisher plugins","text":""},{"location":"plugins/publisher/reference/#hatch.publish.plugin.interface.PublisherInterface","title":"PublisherInterface","text":"

Example usage:

plugin.py hooks.py 
    from hatch.publish.plugin.interface import PublisherInterface\n\n\n    class SpecialPublisher(PublisherInterface):\n        PLUGIN_NAME = 'special'\n        ...\n
    from hatchling.plugin import hookimpl\n\n    from .plugin import SpecialPublisher\n\n\n    @hookimpl\n    def hatch_register_publisher():\n        return SpecialPublisher\n
Source code in src/hatch/publish/plugin/interface.py 
class PublisherInterface(ABC):\n    \"\"\"\n    Example usage:\n\n    ```python tab=\"plugin.py\"\n        from hatch.publish.plugin.interface import PublisherInterface\n\n\n        class SpecialPublisher(PublisherInterface):\n            PLUGIN_NAME = 'special'\n            ...\n    ```\n\n    ```python tab=\"hooks.py\"\n        from hatchling.plugin import hookimpl\n\n        from .plugin import SpecialPublisher\n\n\n        @hookimpl\n        def hatch_register_publisher():\n            return SpecialPublisher\n    ```\n    \"\"\"\n\n    PLUGIN_NAME = ''\n    \"\"\"The name used for selection.\"\"\"\n\n    def __init__(self, app, root, cache_dir, project_config, plugin_config):\n        self.__app = app\n        self.__root = root\n        self.__cache_dir = cache_dir\n        self.__project_config = project_config\n        self.__plugin_config = plugin_config\n\n        self.__disable = None\n\n    @property\n    def app(self):\n        \"\"\"\n        An instance of [Application](../utilities.md#hatchling.bridge.app.Application).\n        \"\"\"\n        return self.__app\n\n    @property\n    def root(self):\n        \"\"\"\n        The root of the project tree as a path-like object.\n        \"\"\"\n        return self.__root\n\n    @property\n    def cache_dir(self):\n        \"\"\"\n        The directory reserved exclusively for this plugin as a path-like object.\n        \"\"\"\n        return self.__cache_dir\n\n    @property\n    def project_config(self) -> dict:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.publish.<PLUGIN_NAME>]\n        ```\n        \"\"\"\n        return self.__project_config\n\n    @property\n    def plugin_config(self) -> dict:\n        \"\"\"\n        This is defined in Hatch's [config file](../../config/hatch.md).\n\n        ```toml tab=\"config.toml\"\n        [publish.<PLUGIN_NAME>]\n        ```\n        \"\"\"\n        return self.__plugin_config\n\n    @property\n    def disable(self):\n        \"\"\"\n        Whether this plugin is disabled, thus requiring confirmation when publishing. Local\n        [project configuration](reference.md#hatch.publish.plugin.interface.PublisherInterface.project_config)\n        takes precedence over global\n        [plugin configuration](reference.md#hatch.publish.plugin.interface.PublisherInterface.plugin_config).\n        \"\"\"\n        if self.__disable is None:\n            if 'disable' in self.project_config:\n                disable = self.project_config['disable']\n                if not isinstance(disable, bool):\n                    message = f'Field `tool.hatch.publish.{self.PLUGIN_NAME}.disable` must be a boolean'\n                    raise TypeError(message)\n            else:\n                disable = self.plugin_config.get('disable', False)\n                if not isinstance(disable, bool):\n                    message = f'Global plugin configuration `publish.{self.PLUGIN_NAME}.disable` must be a boolean'\n                    raise TypeError(message)\n\n            self.__disable = disable\n\n        return self.__disable\n\n    @abstractmethod\n    def publish(self, artifacts: list[str], options: dict):\n        \"\"\"\n        :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n        This is called directly by the [`publish`](../../cli/reference.md#hatch-publish) command\n        with the arguments and options it receives.\n        \"\"\"\n
"},{"location":"plugins/publisher/reference/#hatch.publish.plugin.interface.PublisherInterface.PLUGIN_NAME","title":"PLUGIN_NAME = '' class-attribute instance-attribute","text":"

The name used for selection.

"},{"location":"plugins/publisher/reference/#hatch.publish.plugin.interface.PublisherInterface.app","title":"app property","text":"

An instance of Application.

"},{"location":"plugins/publisher/reference/#hatch.publish.plugin.interface.PublisherInterface.root","title":"root property","text":"

The root of the project tree as a path-like object.

"},{"location":"plugins/publisher/reference/#hatch.publish.plugin.interface.PublisherInterface.cache_dir","title":"cache_dir property","text":"

The directory reserved exclusively for this plugin as a path-like object.

"},{"location":"plugins/publisher/reference/#hatch.publish.plugin.interface.PublisherInterface.project_config","title":"project_config: dict property","text":"pyproject.toml hatch.toml 
[tool.hatch.publish.<PLUGIN_NAME>]\n
[publish.<PLUGIN_NAME>]\n
"},{"location":"plugins/publisher/reference/#hatch.publish.plugin.interface.PublisherInterface.plugin_config","title":"plugin_config: dict property","text":"

This is defined in Hatch's config file.

config.toml 
[publish.<PLUGIN_NAME>]\n
"},{"location":"plugins/publisher/reference/#hatch.publish.plugin.interface.PublisherInterface.disable","title":"disable property","text":"

Whether this plugin is disabled, thus requiring confirmation when publishing. Local project configuration takes precedence over global plugin configuration.

"},{"location":"plugins/publisher/reference/#hatch.publish.plugin.interface.PublisherInterface.publish","title":"publish(artifacts: list[str], options: dict) abstractmethod","text":"

REQUIRED

This is called directly by the publish command with the arguments and options it receives.

Source code in src/hatch/publish/plugin/interface.py 
@abstractmethod\ndef publish(self, artifacts: list[str], options: dict):\n    \"\"\"\n    :material-align-horizontal-left: **REQUIRED** :material-align-horizontal-right:\n\n    This is called directly by the [`publish`](../../cli/reference.md#hatch-publish) command\n    with the arguments and options it receives.\n    \"\"\"\n
"},{"location":"plugins/version-scheme/reference/","title":"Version scheme plugins","text":""},{"location":"plugins/version-scheme/reference/#known-third-party","title":"Known third-party","text":""},{"location":"plugins/version-scheme/reference/#hatchling.version.scheme.plugin.interface.VersionSchemeInterface","title":"VersionSchemeInterface","text":"

Example usage:

plugin.py hooks.py 
from hatchling.version.scheme.plugin.interface import VersionSchemeInterface\n\n\nclass SpecialVersionScheme(VersionSchemeInterface):\n    PLUGIN_NAME = 'special'\n    ...\n
from hatchling.plugin import hookimpl\n\nfrom .plugin import SpecialVersionScheme\n\n\n@hookimpl\ndef hatch_register_version_scheme():\n    return SpecialVersionScheme\n
Source code in backend/src/hatchling/version/scheme/plugin/interface.py 
class VersionSchemeInterface(ABC):  # no cov\n    \"\"\"\n    Example usage:\n\n    ```python tab=\"plugin.py\"\n    from hatchling.version.scheme.plugin.interface import VersionSchemeInterface\n\n\n    class SpecialVersionScheme(VersionSchemeInterface):\n        PLUGIN_NAME = 'special'\n        ...\n    ```\n\n    ```python tab=\"hooks.py\"\n    from hatchling.plugin import hookimpl\n\n    from .plugin import SpecialVersionScheme\n\n\n    @hookimpl\n    def hatch_register_version_scheme():\n        return SpecialVersionScheme\n    ```\n    \"\"\"\n\n    PLUGIN_NAME = ''\n    \"\"\"The name used for selection.\"\"\"\n\n    def __init__(self, root: str, config: dict) -> None:\n        self.__root = root\n        self.__config = config\n\n    @property\n    def root(self) -> str:\n        \"\"\"\n        The root of the project tree as a string.\n        \"\"\"\n        return self.__root\n\n    @property\n    def config(self) -> dict:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.version]\n        ```\n        \"\"\"\n        return self.__config\n\n    @abstractmethod\n    def update(self, desired_version: str, original_version: str, version_data: dict) -> str:\n        \"\"\"\n        This should return a normalized form of the desired version and verify that it\n        is higher than the original version.\n        \"\"\"\n
"},{"location":"plugins/version-scheme/reference/#hatchling.version.scheme.plugin.interface.VersionSchemeInterface.PLUGIN_NAME","title":"PLUGIN_NAME = '' class-attribute instance-attribute","text":"

The name used for selection.

"},{"location":"plugins/version-scheme/reference/#hatchling.version.scheme.plugin.interface.VersionSchemeInterface.root","title":"root: str property","text":"

The root of the project tree as a string.

"},{"location":"plugins/version-scheme/reference/#hatchling.version.scheme.plugin.interface.VersionSchemeInterface.config","title":"config: dict property","text":"pyproject.toml hatch.toml 
[tool.hatch.version]\n
[version]\n
"},{"location":"plugins/version-scheme/reference/#hatchling.version.scheme.plugin.interface.VersionSchemeInterface.update","title":"update(desired_version: str, original_version: str, version_data: dict) -> str abstractmethod","text":"

This should return a normalized form of the desired version and verify that it is higher than the original version.

Source code in backend/src/hatchling/version/scheme/plugin/interface.py 
@abstractmethod\ndef update(self, desired_version: str, original_version: str, version_data: dict) -> str:\n    \"\"\"\n    This should return a normalized form of the desired version and verify that it\n    is higher than the original version.\n    \"\"\"\n
"},{"location":"plugins/version-scheme/standard/","title":"Standard version scheme","text":"

See the documentation for versioning.

"},{"location":"plugins/version-scheme/standard/#configuration","title":"Configuration","text":"

The version scheme plugin name is standard.

pyproject.toml hatch.toml 
[tool.hatch.version]\nscheme = \"standard\"\n
[version]\nscheme = \"standard\"\n
"},{"location":"plugins/version-scheme/standard/#options","title":"Options","text":"Option Description validate-bump When setting a specific version, this determines whether to check that the new version is higher than the original. The default is true."},{"location":"plugins/version-source/code/","title":"Code version source","text":""},{"location":"plugins/version-source/code/#updates","title":"Updates","text":"

Setting the version is not supported.

"},{"location":"plugins/version-source/code/#configuration","title":"Configuration","text":"

The version source plugin name is code.

pyproject.toml hatch.toml 
[tool.hatch.version]\nsource = \"code\"\n
[version]\nsource = \"code\"\n
"},{"location":"plugins/version-source/code/#options","title":"Options","text":"Option Description path (required) A relative path to a Python file or extension module that will be loaded expression A Python expression that when evaluated in the context of the loaded file returns the version. The default expression is simply __version__. search-paths A list of relative paths to directories that will be prepended to Python's search path"},{"location":"plugins/version-source/code/#missing-imports","title":"Missing imports","text":"

If the chosen path imports another module in your project, then you'll need to use absolute imports coupled with the search-paths option. For example, say you need to load the following file:

src/pkg/__init__.py 
    from ._version import get_version\n\n    __version__ = get_version()\n

You should change it to:

src/pkg/__init__.py 
    from pkg._version import get_version\n\n    __version__ = get_version()\n

and the configuration would become:

pyproject.toml hatch.toml 
[tool.hatch.version]\nsource = \"code\"\npath = \"src/pkg/__init__.py\"\nsearch-paths = [\"src\"]\n
[version]\nsource = \"code\"\npath = \"src/pkg/__init__.py\"\nsearch-paths = [\"src\"]\n
"},{"location":"plugins/version-source/env/","title":"Environment version source","text":"

Retrieves the version from an environment variable. This can be useful in build pipelines where the version is set by an external trigger.

"},{"location":"plugins/version-source/env/#updates","title":"Updates","text":"

Setting the version is not supported.

"},{"location":"plugins/version-source/env/#configuration","title":"Configuration","text":"

The version source plugin name is env.

pyproject.toml hatch.toml 
[tool.hatch.version]\nsource = \"env\"\n
[version]\nsource = \"env\"\n
"},{"location":"plugins/version-source/env/#options","title":"Options","text":"Option Description variable (required) The name of the environment variable"},{"location":"plugins/version-source/reference/","title":"Version source plugins","text":""},{"location":"plugins/version-source/reference/#known-third-party","title":"Known third-party","text":""},{"location":"plugins/version-source/reference/#hatchling.version.source.plugin.interface.VersionSourceInterface","title":"VersionSourceInterface","text":"

Example usage:

plugin.py hooks.py 
from hatchling.version.source.plugin.interface import VersionSourceInterface\n\n\nclass SpecialVersionSource(VersionSourceInterface):\n    PLUGIN_NAME = 'special'\n    ...\n
from hatchling.plugin import hookimpl\n\nfrom .plugin import SpecialVersionSource\n\n\n@hookimpl\ndef hatch_register_version_source():\n    return SpecialVersionSource\n
Source code in backend/src/hatchling/version/source/plugin/interface.py 
class VersionSourceInterface(ABC):  # no cov\n    \"\"\"\n    Example usage:\n\n    ```python tab=\"plugin.py\"\n    from hatchling.version.source.plugin.interface import VersionSourceInterface\n\n\n    class SpecialVersionSource(VersionSourceInterface):\n        PLUGIN_NAME = 'special'\n        ...\n    ```\n\n    ```python tab=\"hooks.py\"\n    from hatchling.plugin import hookimpl\n\n    from .plugin import SpecialVersionSource\n\n\n    @hookimpl\n    def hatch_register_version_source():\n        return SpecialVersionSource\n    ```\n    \"\"\"\n\n    PLUGIN_NAME = ''\n    \"\"\"The name used for selection.\"\"\"\n\n    def __init__(self, root: str, config: dict) -> None:\n        self.__root = root\n        self.__config = config\n\n    @property\n    def root(self) -> str:\n        \"\"\"\n        The root of the project tree as a string.\n        \"\"\"\n        return self.__root\n\n    @property\n    def config(self) -> dict:\n        \"\"\"\n        ```toml config-example\n        [tool.hatch.version]\n        ```\n        \"\"\"\n        return self.__config\n\n    @abstractmethod\n    def get_version_data(self) -> dict:\n        \"\"\"\n        This should return a mapping with a `version` key representing the current version of the project and will be\n        displayed when invoking the [`version`](../../cli/reference.md#hatch-version) command without any arguments.\n\n        The mapping can contain anything else and will be passed to\n        [set_version](reference.md#hatchling.version.source.plugin.interface.VersionSourceInterface.set_version)\n        when updating the version.\n        \"\"\"\n\n    def set_version(self, version: str, version_data: dict) -> None:\n        \"\"\"\n        This should update the version to the first argument with the data provided during retrieval.\n        \"\"\"\n        raise NotImplementedError\n
"},{"location":"plugins/version-source/reference/#hatchling.version.source.plugin.interface.VersionSourceInterface.PLUGIN_NAME","title":"PLUGIN_NAME = '' class-attribute instance-attribute","text":"

The name used for selection.

"},{"location":"plugins/version-source/reference/#hatchling.version.source.plugin.interface.VersionSourceInterface.root","title":"root: str property","text":"

The root of the project tree as a string.

"},{"location":"plugins/version-source/reference/#hatchling.version.source.plugin.interface.VersionSourceInterface.config","title":"config: dict property","text":"pyproject.toml hatch.toml 
[tool.hatch.version]\n
[version]\n
"},{"location":"plugins/version-source/reference/#hatchling.version.source.plugin.interface.VersionSourceInterface.get_version_data","title":"get_version_data() -> dict abstractmethod","text":"

This should return a mapping with a version key representing the current version of the project and will be displayed when invoking the version command without any arguments.

The mapping can contain anything else and will be passed to set_version when updating the version.

Source code in backend/src/hatchling/version/source/plugin/interface.py 
@abstractmethod\ndef get_version_data(self) -> dict:\n    \"\"\"\n    This should return a mapping with a `version` key representing the current version of the project and will be\n    displayed when invoking the [`version`](../../cli/reference.md#hatch-version) command without any arguments.\n\n    The mapping can contain anything else and will be passed to\n    [set_version](reference.md#hatchling.version.source.plugin.interface.VersionSourceInterface.set_version)\n    when updating the version.\n    \"\"\"\n
"},{"location":"plugins/version-source/reference/#hatchling.version.source.plugin.interface.VersionSourceInterface.set_version","title":"set_version(version: str, version_data: dict) -> None","text":"

This should update the version to the first argument with the data provided during retrieval.

Source code in backend/src/hatchling/version/source/plugin/interface.py 
def set_version(self, version: str, version_data: dict) -> None:\n    \"\"\"\n    This should update the version to the first argument with the data provided during retrieval.\n    \"\"\"\n    raise NotImplementedError\n
"},{"location":"plugins/version-source/regex/","title":"Regex version source","text":"

See the documentation for versioning.

"},{"location":"plugins/version-source/regex/#updates","title":"Updates","text":"

Setting the version is supported.

"},{"location":"plugins/version-source/regex/#configuration","title":"Configuration","text":"

The version source plugin name is regex.

pyproject.toml hatch.toml 
[tool.hatch.version]\nsource = \"regex\"\n
[version]\nsource = \"regex\"\n
"},{"location":"plugins/version-source/regex/#options","title":"Options","text":"Option Description path (required) A relative path to a file containing the project's version pattern A regular expression that has a named group called version that represents the version. The default pattern looks for a variable named __version__ or VERSION that is set to a string containing the version, optionally prefixed with the lowercase letter v."},{"location":"blog/archive/2023/","title":"2023","text":""},{"location":"blog/archive/2022/","title":"2022","text":""},{"location":"blog/category/release/","title":"Release","text":""}]} \ No newline at end of file