Add pyproject.toml

.github/fetch_version.py

@@ -0,0 +1,13 @@
+from policyengine_core.__version__ import __version__
+
+
+def fetch_version():
+    try:
+        return __version__
+    except Exception as e:
+        print(f"Error fetching version: {e}")
+        return None
+
+
+if __name__ == "__main__":
+    print(fetch_version())

.github/is-version-number-acceptable.sh

@@ -12,7 +12,7 @@ then
     exit 0
 fi
 
-current_version=`python setup.py --version`
+current_version=`python .github/fetch_version.py`
 
 if git rev-parse --verify --quiet $current_version
 then

.github/publish-git-tag.sh

@@ -1,4 +1,4 @@
 #! /usr/bin/env bash
 
-git tag `python setup.py --version`
+git tag `python .github/fetch_version.py`
 git push --tags || true  # update the repository version

Makefile

@@ -21,11 +21,11 @@ test: test-country-template
 	coverage xml -i
 
 build:
-	python setup.py sdist bdist_wheel
+	python -m build
 
 changelog:
 	build-changelog changelog.yaml --output changelog.yaml --update-last-date --start-from 0.1.0 --append-file changelog_entry.yaml
 	build-changelog changelog.yaml --org PolicyEngine --repo policyengine-core --output CHANGELOG.md --template .github/changelog_template.md
-	bump-version changelog.yaml setup.py
+	bump-version changelog.yaml pyproject.toml
 	rm changelog_entry.yaml || true
 	touch changelog_entry.yaml

changelog_entry.yaml

@@ -0,0 +1,7 @@
+- bump: minor
+  changes:
+    added:
+      - pyproject.toml, transforming from setup.py
+      - testing for pyproject.toml
+    changed:
+      - edited dependencies in setup.py to avoid overwriting

policyengine_core/__version__.py

@@ -0,0 +1,9 @@
+import importlib.metadata
+import tomli
+
+try:
+    with open("pyproject.toml", "rb") as f:
+        pyproject = tomli.load(f)
+    __version__ = pyproject["project"]["version"]
+except Exception as e:
+    __version__ = importlib.metadata.version("policyengine_core")

pyproject.toml

@@ -0,0 +1,74 @@
+[build-system]
+requires = ["setuptools"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "policyengine-core"
+version = "3.6.3"
+dependencies = [
+    "pytest>=8,<9",
+    "numpy~=1.26.4",
+    "black",
+    "linecheck<1",
+    "yaml-changelog<1",
+    "coverage",
+    "sortedcontainers<3",
+    "numexpr<3",
+    "dpath<3",
+    "psutil<6",
+    "wheel<1",
+    "h5py>=3,<4",
+    "requests>=2.27.1,<3",
+    "pandas>=1",
+    "plotly>=5.6.0,<6",
+    "ipython>=7.17.0,<8",
+    "pyvis>=0.3.2",
+    "tomli==2.0.1",
+    "build==1.2.2",
+]
+requires-python = ">=3.9"
+authors = [
+    {name = "PolicyEngine", email = "[email protected]"}
+]
+description = "Core microsimulation engine enabling country-specific policy models."
+readme = "README.md"
+license = {file = "LICENSE"}
+keywords = ["tax", "benefit", "microsimulation", "framework"]
+classifiers = [
+    "Development Status :: 5 - Production/Stable",
+    "License :: OSI Approved :: GNU Affero General Public License v3",
+    "Operating System :: POSIX",
+    "Programming Language :: Python",
+    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Topic :: Scientific/Engineering :: Information Analysis",
+]
+dynamic = ["scripts"]
+
+[project.optional-dependencies]
+dev = [
+    "jupyter-book<1",
+    "furo<2023",
+    "markupsafe==2.0.1",
+    "coverage",
+    "furo",
+    "mypy<2",
+    "sphinx==5.0.0",
+    "sphinx-argparse==0.4.0",
+    "sphinx-math-dollar==1.2.1",
+    "types-PyYAML==6.0.12.2",
+    "types-requests==2.28.11.7",
+    "types-setuptools==65.6.0.2",
+    "types-urllib3==1.26.25.4",
+]
+
+[project.urls]
+Homepage = "https://github.com/policyengine/policyengine-core"
+
+[tool.setuptools]
+include-package-data = true
+
+[project.entry-points.console_scripts]
+policyengine-core = "policyengine_core.scripts.policyengine_command:main"

tests/core/test_toml.py

@@ -0,0 +1,41 @@
+import os
+from pathlib import Path
+
+import pytest
+import tomli
+
+
+@pytest.fixture(scope="module")
+def toml_data():
+    # get the path of current file and find pyproject.toml relatively
+    file_path = (
+        Path(os.path.abspath(os.path.dirname(__file__))).parents[1]
+        / "pyproject.toml"
+    )
+    if not file_path.exists():
+        pytest.fail(f"pyproject.toml not found in the current directory.")
+    with open(file_path, "rb") as f:
+        return tomli.load(f)
+
+
+def test_toml_syntax(toml_data):
+    try:
+        toml_data
+    except tomli.TOMLDecodeError as e:
+        pytest.fail(f"TOML syntax error: {e}")
+
+
+def test_required_fields(toml_data):
+    required_fields = ["name", "version", "dependencies"]
+    for field in required_fields:
+        assert field in toml_data.get(
+            "project", {}
+        ), f"Missing required field: {field}"
+
+
+def test_build_system(toml_data):
+    build_system = toml_data.get("build-system", {})
+    assert "requires" in build_system, "Build system 'requires' is missing."
+    assert (
+        "build-backend" in build_system
+    ), "Build system 'build-backend' is missing."