refactor: convert 'setup()' metadata to TOML

pyproject.toml

@@ -0,0 +1,71 @@
+[build-system]
+requires = [
+    "setuptools",
+    "wheel",
+    "cffi ; platform_python_implementation == 'CPython'",
+    "cffi @ git+https://github.com/python-cffi/cffi.git ; platform_python_implementation == 'CPython' and python_version >= '3.13a0'",
+]
+build-backend = "setuptools.build_meta"
+
+
+[project]
+name = "persistent"
+version = "5.3.dev0"
+dynamic = ["readme"]
+authors = [
+    {name = "Zope Foundation and Contributors", email = "[email protected]"},
+]
+description = "Translucent persistent objects"
+requires-python = ">=3.7"
+license = {text = "ZPL 2.1"}
+classifiers = [
+    "Development Status :: 6 - Mature",
+    "License :: OSI Approved :: Zope Public License",
+    "Programming Language :: Python",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.7",
+    "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 :: Implementation :: CPython",
+    "Programming Language :: Python :: Implementation :: PyPy",
+    "Framework :: ZODB",
+    "Topic :: Database",
+    "Topic :: Software Development :: Libraries :: Python Modules",
+    "Operating System :: Microsoft :: Windows",
+    "Operating System :: Unix",
+]
+dependencies = [
+    "zope.deferredimport",
+    "zope.interface",
+    "cffi ; platform_python_implementation == 'CPython'",
+    "cffi @ git+https://github.com/python-cffi/cffi.git ; platform_python_implementation == 'CPython' and python_version >= '3.13a0'",
+]
+
+[project.urls]
+documentation = "https://persistent.readthedocs.io"
+repository = "https://github.com/zopefoundation/persistent/"
+issue_tracker = "https://github.com/zopefoundation/persistent/issues"
+changelog = "https://github.com/zopefoundation/persistent/blob/master/CHANGES.rst"
+
+[project.optional-dependencies]
+test = [
+    "zope.testrunner",
+    "manuel",
+]
+testing = []   # backward-compatibility
+docs = [
+    "Sphinx",
+    "repoze.sphinx.autointerface",
+    "sphinx_rtd_theme",
+]
+
+
+[tool.setuptools.dynamic]
+readme = {file = ["README.rst", "CHANGES.rst"]}
+
+[tool.setuptools.packages.find]
+where = ["src"]
+include = ["persistent"]

setup.py

@@ -12,27 +12,12 @@
 #
 ##############################################################################
 
-import os
 import platform
 
 from setuptools import Extension
-from setuptools import find_packages
 from setuptools import setup
 
 
-version = '5.3.dev0'
-
-here = os.path.abspath(os.path.dirname(__file__))
-
-
-def _read_file(filename):
-    with open(os.path.join(here, filename)) as f:
-        return f.read()
-
-
-README = (_read_file('README.rst') + '\n\n' + _read_file('CHANGES.rst'))
-
-
 define_macros = (
     # We currently use macros like PyBytes_AS_STRING
     # and internal functions like _PyObject_GetDictPtr
@@ -86,64 +71,8 @@ def _read_file(filename):
         'src/persistent/ring.h',
     ]
 
-setup(name='persistent',
-      version=version,
-      description='Translucent persistent objects',
-      long_description=README,
-      classifiers=[
-          "Development Status :: 6 - Mature",
-          "License :: OSI Approved :: Zope Public License",
-          "Programming Language :: Python",
-          "Programming Language :: Python :: 3",
-          "Programming Language :: Python :: 3.7",
-          "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 :: Implementation :: CPython",
-          "Programming Language :: Python :: Implementation :: PyPy",
-          "Framework :: ZODB",
-          "Topic :: Database",
-          "Topic :: Software Development :: Libraries :: Python Modules",
-          "Operating System :: Microsoft :: Windows",
-          "Operating System :: Unix",
-      ],
-      author="Zope Foundation and Contributors",
-      author_email="[email protected]",
-      url="https://github.com/zopefoundation/persistent/",
-      project_urls={
-        'Documentation': 'https://persistent.readthedocs.io',
-        'Issue Tracker': 'https://github.com/zopefoundation/persistent/issues',
-        'Sources': 'https://github.com/zopefoundation/persistent',
-      },
-      license="ZPL 2.1",
-      packages=find_packages('src'),
-      package_dir={'': 'src'},
-      include_package_data=True,
-      zip_safe=False,
+setup(
       ext_modules=ext_modules,
       cffi_modules=['src/persistent/_ring_build.py:ffi'],
       headers=headers,
-      extras_require={
-          'test': [
-              'zope.testrunner',
-              'manuel',
-          ],
-          'testing': (),
-          'docs': [
-              'Sphinx',
-              'repoze.sphinx.autointerface',
-              'sphinx_rtd_theme',
-          ],
-      },
-      python_requires='>=3.7',
-      install_requires=[
-          'zope.deferredimport',
-          'zope.interface',
-          "cffi ; platform_python_implementation == 'CPython'",
-      ],
-      setup_requires=[
-          "cffi ; platform_python_implementation == 'CPython'",
-      ],
-      entry_points={})
+)

tox.ini

@@ -10,6 +10,7 @@ envlist =
     py310,py310-pure
     py311,py311-pure
     py312,py312-pure
+    py313,py313-pure
     pypy3
     docs
     coverage