Move package configuration to declarative config (#557)

* Add pyproject.toml declaring build dependency on setuptools.

* Reformat using ruff (to avoid diffs for editors with ruff autosave).

* Fix typo in package_data

* Move Description to setup.cfg

* Remove 'license' field, which is redundant and recommended against.

* Move 'version' to setup.cfg

* Move the remaining metadata into setup.cfg.

* Remove build_py cmdclass as it's the default.

pyproject.toml

@@ -0,0 +1,3 @@
+[build-system]
+requires = ["setuptools>=61.2"]
+build-backend = "setuptools.build_meta"

setup.cfg

@@ -1,2 +1,47 @@
+[metadata]
+name = comtypes
+description = Pure Python COM package
+author = Thomas Heller
+author_email = theller@python.net
+url = https://github.com/enthought/comtypes
+download_url = https://github.com/enthought/comtypes/releases
+version = attr:comtypes.__version__
+long_description = file:README.md
+long_description_content_type = text/markdown
+classifiers =
+	Development Status :: 5 - Production/Stable
+	Intended Audience :: Developers
+	License :: OSI Approved :: MIT License
+	Operating System :: Microsoft :: Windows
+	Programming Language :: Python
+	Programming Language :: Python :: 3
+	Topic :: Software Development :: Libraries :: Python Modules
+
 [options]
 python_requires = >=3.7
+
+packages =
+	comtypes
+	comtypes.client
+	comtypes.server
+	comtypes.tools
+	comtypes.tools.codegenerator
+	comtypes.test
+
+[options.package_data]
+comtypes.test =
+	TestComServer.idl
+	TestComServer.tlb
+	TestDispServer.idl
+	TestDispServer.tlb
+	mytypelib.idl
+	mylib.idl
+	mylib.tlb
+	urlhist.tlb
+	test_jscript.js
+comtypes =
+	hints.pyi
+
+[options.entry_points]
+console_scripts =
+	clear_comtypes_cache = comtypes.clear_cache:main

setup.py

@@ -1,15 +1,11 @@
 """comtypes package install script"""
+
 import sys
 import os
 import subprocess
 
 from setuptools import Command, setup
 from setuptools.command.install import install
-from setuptools.command.build_py import build_py
-
-
-with open('README.md') as readme_stream:
-    readme = readme_stream.read()
 
 
 class test(Command):
@@ -18,14 +14,19 @@ class test(Command):
     description = "run tests"
 
     user_options = [
-        ('tests=', 't',
-         "comma-separated list of packages that contain test modules"),
-        ('use-resources=', 'u',
-         "resources to use - resource names are defined by tests"),
-        ('refcounts', 'r',
-         "repeat tests to search for refcount leaks (requires "
-         "'sys.gettotalrefcount')"),
-        ]
+        ('tests=', 't', "comma-separated list of packages that contain test modules"),
+        (
+            'use-resources=',
+            'u',
+            "resources to use - resource names are defined by tests",
+        ),
+        (
+            'refcounts',
+            'r',
+            "repeat tests to search for refcount leaks (requires "
+            "'sys.gettotalrefcount')",
+        ),
+    ]
 
     boolean_options = ["refcounts"]
 
@@ -49,55 +50,36 @@ def run(self):
 
         # Register our ATL COM tester dll
         import comtypes.test
+
         script_path = os.path.dirname(__file__)
         source_dir = os.path.abspath(os.path.join(script_path, "source"))
         comtypes.test.register_server(source_dir)
 
         comtypes.test.use_resources.extend(self.use_resources)
         for name in self.tests:
             package = __import__(name, globals(), locals(), ['*'])
-            sys.stdout.write("Testing package %s %s\n"
-                             % (name, (sys.version, sys.platform, os.name)))
-            package_failure = comtypes.test.run_tests(package,
-                                                      "test_*.py",
-                                                      self.verbose,
-                                                      self.refcounts)
+            sys.stdout.write(
+                "Testing package %s %s\n" % (name, (sys.version, sys.platform, os.name))
+            )
+            package_failure = comtypes.test.run_tests(
+                package, "test_*.py", self.verbose, self.refcounts
+            )
             self.failure = self.failure or package_failure
 
 
-classifiers = [
-    'Development Status :: 5 - Production/Stable',
-    'Intended Audience :: Developers',
-    'License :: OSI Approved :: MIT License',
-    'Operating System :: Microsoft :: Windows',
-    'Programming Language :: Python',
-    'Programming Language :: Python :: 3',
-    'Topic :: Software Development :: Libraries :: Python Modules',
-    ]
-
-
-def read_version():
-    # Determine the version number by reading it from the file
-    # 'comtypes\__init__.py'.  We cannot import this file (with py3,
-    # at least) because it is in py2.x syntax.
-    for line in open("comtypes/__init__.py"):
-        if line.startswith("__version__ = "):
-            var, value = line.split('=')
-            return value.strip().strip('"').strip("'")
-    raise NotImplementedError("__version__ is not found in __init__.py")
-
-
 class post_install(install):
-
     # both this static variable and method initialize_options() help to avoid
     # weird setuptools error with "pip install comtypes", details are here:
     # https://github.com/enthought/comtypes/issues/155
     # the working solution was found here:
     # https://github.com/pypa/setuptools/blob/3b90be7bb6323eb44d0f28864509c1d47aa098de/setuptools/command/install.py
     user_options = install.user_options + [
         ('old-and-unmanageable', None, "Try not to use this!"),
-        ('single-version-externally-managed', None,
-         "used by system package builders to create 'flat' eggs"),
+        (
+            'single-version-externally-managed',
+            None,
+            "used by system package builders to create 'flat' eggs",
+        ),
     ]
 
     def initialize_options(self):
@@ -112,61 +94,23 @@ def run(self):
             print("Executing post install script...")
             print(f'"{sys.executable}" -m comtypes.clear_cache -y')
             try:
-                subprocess.check_call([sys.executable, "-m", "comtypes.clear_cache", '-y'])
+                subprocess.check_call([
+                    sys.executable,
+                    "-m",
+                    "comtypes.clear_cache",
+                    '-y',
+                ])
             except subprocess.CalledProcessError:
                 print("Failed to run post install script!")
 
 
-setup_params = dict(
-    name="comtypes",
-    description="Pure Python COM package",
-    long_description=readme,
-    long_description_content_type="text/markdown",
-    author="Thomas Heller",
-    author_email="theller@python.net",
-    url="https://github.com/enthought/comtypes",
-    download_url="https://github.com/enthought/comtypes/releases",
-    license="MIT License",
-    package_data={
-        "comtypes.test": [
-            "TestComServer.idl",
-            "TestComServer.tlb",
-            "TestDispServer.idl",
-            "TestDispServer.tlb",
-            "mytypelib.idl",
-            "mylib.idl",
-            "mylib.tlb"
-            "urlhist.tlb",
-            "test_jscript.js",
-        ],
-        "comtypes": [
-            "hints.pyi"
-        ]},
-    classifiers=classifiers,
-
-    entry_points={
-        "console_scripts": ["clear_comtypes_cache=comtypes.clear_cache:main"]
-    },
-
-    cmdclass={
-        'test': test,
-        'build_py': build_py,
-        'install': post_install,
-    },
-
-    version=read_version(),
-    packages=[
-        "comtypes",
-        "comtypes.client",
-        "comtypes.server",
-        "comtypes.tools",
-        "comtypes.tools.codegenerator",
-        "comtypes.test",
-    ],
-)
-
 if __name__ == '__main__':
-    dist = setup(**setup_params)
+    dist = setup(
+        cmdclass={
+            'test': test,
+            'install': post_install,
+        },
+    )
     # Exit with a failure code if only running the tests and they failed
     if dist.commands == ['test']:
         command = dist.command_obj['test']