❯ poetry install
The "poetry.dev-dependencies" section is deprecated and will be removed in a future version. Use "poetry.group.dev.dependencies" instead.
Installing dependencies from lock file

Package operations: 35 installs, 0 updates, 0 removals

  - Installing pillow (10.3.0): Failed

PEP517 build of a dependency failed

Backend subprocess exited when trying to invoke get_requires_for_build_wheel

    | Command '['/var/folders/w1/k59hb6y575dd_l15jdsfffq40000gq/T/tmpm8oplqpi/.venv/bin/python', '/opt/homebrew/Cellar/poetry/2.0.1/libexec/lib/python3.13/site-packages/pyproject_hooks/_in_process/_in_process.py', 'get_requires_for_build_wheel', '/var/folders/w1/k59hb6y575dd_l15jdsfffq40000gq/T/tmpzswgksny']' returned non-zero exit status 1.
    |
    | Traceback (most recent call last):
    |   File "/opt/homebrew/Cellar/poetry/2.0.1/libexec/lib/python3.13/site-packages/pyproject_hooks/_in_process/_in_process.py", line 389, in <module>
    |     main()
    |     ~~~~^^
    |   File "/opt/homebrew/Cellar/poetry/2.0.1/libexec/lib/python3.13/site-packages/pyproject_hooks/_in_process/_in_process.py", line 373, in main
    |     json_out["return_val"] = hook(**hook_input["kwargs"])
    |                              ~~~~^^^^^^^^^^^^^^^^^^^^^^^^
    |   File "/opt/homebrew/Cellar/poetry/2.0.1/libexec/lib/python3.13/site-packages/pyproject_hooks/_in_process/_in_process.py", line 143, in get_requires_for_build_wheel
    |     return hook(config_settings)
    |   File "/private/var/folders/w1/k59hb6y575dd_l15jdsfffq40000gq/T/tmpm8oplqpi/.venv/lib/python3.13/site-packages/setuptools/build_meta.py", line 334, in get_requires_for_build_wheel
    |     return self._get_build_requires(config_settings, requirements=[])
    |            ~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |   File "/private/var/folders/w1/k59hb6y575dd_l15jdsfffq40000gq/T/tmpm8oplqpi/.venv/lib/python3.13/site-packages/setuptools/build_meta.py", line 304, in _get_build_requires
    |     self.run_setup()
    |     ~~~~~~~~~~~~~~^^
    |   File "/private/var/folders/w1/k59hb6y575dd_l15jdsfffq40000gq/T/tmpm8oplqpi/.venv/lib/python3.13/site-packages/setuptools/build_meta.py", line 320, in run_setup
    |     exec(code, locals())
    |     ~~~~^^^^^^^^^^^^^^^^
    |   File "<string>", line 33, in <module>
    |   File "<string>", line 27, in get_version
    | KeyError: '__version__'

Note: This error originates from the build backend, and is likely not a problem with poetry but one of the following issues with pillow (10.3.0)

  - not supporting PEP 517 builds
  - not specifying PEP 517 build requirements correctly
  - the build requirements are incompatible with your operating system or Python version
  - the build requirements are missing system dependencies (eg: compilers, libraries, headers).

You can verify this by running pip wheel --no-cache-dir --use-pep517 "pillow (==10.3.0)".

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