Move most packaging metadata to pyproject.toml (#129)

* move most metadata to pyproject.toml
* use environment marker for conditional pycparser dep

* fix version test

pyproject.toml

@@ -5,3 +5,46 @@ requires = [
     "setuptools >= 66.1"
 ]
 build-backend = "setuptools.build_meta"
+
+[project]
+name = "cffi"
+version = "1.18.0.dev0"
+dependencies = [
+    "pycparser; implementation_name != 'PyPy'",
+]
+requires-python = ">=3.8"
+
+description = "Foreign Function Interface for Python calling C code."
+readme = {file = "README.md", content-type = "text/markdown"}
+classifiers = [
+    "Programming Language :: Python",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.8",
+    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
+    "Programming Language :: Python :: Implementation :: CPython",
+    "Programming Language :: Python :: Implementation :: PyPy",
+    "License :: OSI Approved :: MIT License",
+]
+authors = [
+    {name = "Armin Rigo"},
+    {name = "Maciej Fijalkowski"},
+]
+maintainers = [
+    {name = "Matt Davis"},
+    {name = "Matt Clay"},
+]
+
+[project.entry-points."distutils.setup_keywords"]
+cffi_modules = "cffi.setuptools_ext:cffi_modules"
+
+[project.urls]
+Documentation = "https://cffi.readthedocs.io/"
+Changelog = "https://cffi.readthedocs.io/en/latest/whatsnew.html"
+Downloads = "https://github.com/python-cffi/cffi/releases"
+Contact = "https://groups.google.com/forum/#!forum/python-cffi"
+"Source Code" = "https://github.com/python-cffi/cffi"
+"Issue Tracker" = "https://github.com/python-cffi/cffi/issues"

setup.py

@@ -176,40 +176,14 @@ def has_ext_modules(self):
     # arguments mostly empty in this case.
     cpython = ('_cffi_backend' not in sys.builtin_module_names)
 
-    install_requires = []
-    if cpython:
-        install_requires.append('pycparser')
-
     setup(
-        name='cffi',
-        description='Foreign Function Interface for Python calling C code.',
-        long_description="""
-CFFI
-====
-
-Foreign Function Interface for Python calling C code.
-Please see the `Documentation <http://cffi.readthedocs.org/>`_.
-
-Contact
--------
-
-`Mailing list <https://groups.google.com/forum/#!forum/python-cffi>`_
-""",
-        version='1.18.0.dev0',
-        python_requires='>=3.8',
         packages=['cffi'] if cpython else [],
         package_dir={"": "src"},
         package_data={'cffi': ['_cffi_include.h', 'parse_c_type.h', 
                                '_embedding.h', '_cffi_errors.h']}
                      if cpython else {},
         zip_safe=False,
 
-        url='http://cffi.readthedocs.org',
-        author='Armin Rigo, Maciej Fijalkowski',
-        author_email='python-cffi@googlegroups.com',
-
-        license='MIT',
-
         distclass=CFFIDistribution,
         ext_modules=[Extension(
             name='_cffi_backend',
@@ -222,26 +196,4 @@ def has_ext_modules(self):
             extra_link_args=extra_link_args,
             extra_objects=forced_extra_objs,
         )] if cpython else [],
-
-        install_requires=install_requires,
-
-        entry_points = {
-            "distutils.setup_keywords": [
-                "cffi_modules = cffi.setuptools_ext:cffi_modules",
-            ],
-        },
-
-        classifiers=[
-            'Programming Language :: Python',
-            'Programming Language :: Python :: 3',
-            'Programming Language :: Python :: 3.8',
-            'Programming Language :: Python :: 3.9',
-            'Programming Language :: Python :: 3.10',
-            'Programming Language :: Python :: 3.11',
-            'Programming Language :: Python :: 3.12',
-            'Programming Language :: Python :: 3.13',
-            'Programming Language :: Python :: Implementation :: CPython',
-            'Programming Language :: Python :: Implementation :: PyPy',
-            'License :: OSI Approved :: MIT License',
-        ],
     )

testing/cffi0/test_version.py

@@ -38,13 +38,13 @@ def test_doc_version():
     assert ("version = '%s'\n" % v[:4]) in content
     assert ("release = '%s'\n" % v) in content
 
-def test_setup_version():
+def test_pyproject_version():
     cffi_root = Path(os.path.dirname(__file__)).parent.parent
-    p = cffi_root / 'setup.py'
+    p = cffi_root / 'pyproject.toml'
     content = _read(p)
     #
     v = cffi.__version__.replace('+', '')
-    assert ("version='%s'" % v) in content
+    assert f'version = "{v}"' in content
 
 def test_c_version():
     cffi_root = Path(os.path.dirname(__file__)).parent.parent