Move to pyproject.toml for setuptools data (#572)

This requires more modern versions of setuptools to build, but results
in declarative metadata with fewer pieces of disparate config.

The setup.py stub is kept for now to reduce the number of steps
redistributors of nose2 will have to take to adapt. It can be removed
in a subsequent release.

Also, remove a defunct `graft` rule from `MANIFEST.in`.
Apply a fix from pre-commit hooks.

MANIFEST.in

@@ -5,7 +5,6 @@ include README.rst
 include license.txt
 recursive-include nose2/tests/functional/support *.py *.txt *.cfg *.rst *.json *.egg .coveragerc
 recursive-include docs *.inc *.py *.rst Makefile
-graft bin
 global-exclude __pycache__
 global-exclude *~
 global-exclude *.pyc

docs/changelog.rst

@@ -15,9 +15,14 @@ testsuites.
 
 * Remove support for python2 and older python3 versions
 
-* Fix support for python3.12 to avoid warnings about `addDuration`.
+* Fix support for python3.12 to avoid warnings about ``addDuration``.
   Thanks to :user:`cclauss` for the fix!
 
+* ``nose2`` package metadata is converted to pyproject.toml format, using
+  ``setuptools``. Building ``nose2`` packages from source now requires
+  ``setuptools>=61.0.0`` or a PEP 517 compatible build frontend
+  (e.g. ``build``).
+
 0.12.0 (2022-07-16)
 -------------------
 

nose2/tests/functional/test_junitxml_plugin.py

@@ -24,7 +24,7 @@ def run_with_junitxml_loaded(self, scenario, *args, **kwargs):
             "-s%s" % test_dir,
             "--plugin=nose2.plugins.junitxml",
             "-v",
-            *(config_args + args)
+            *(config_args + args),
         )
         return junit_report, proc
 

pyproject.toml

@@ -1,3 +1,62 @@
+[build-system]
+build-backend = "setuptools.build_meta"
+requires = [
+  "setuptools",
+]
+
+[project]
+name = "nose2"
+description = "unittest with plugins"
+readme = "README.rst"
+keywords= [
+  "testing",
+  "tests",
+  "unittest",
+]
+authors = [
+  { name = "Stephen Rosen", email = "[email protected]" },
+]
+requires-python = ">=3.6"
+classifiers=[
+  "Development Status :: 4 - Beta",
+  "Environment :: Console",
+  "Intended Audience :: Developers",
+  "License :: OSI Approved :: BSD License",
+  "Programming Language :: Python",
+  "Programming Language :: Python :: 3.6",
+  "Programming Language :: Python :: 3.7",
+  "Programming Language :: Python :: 3.8",
+  "Programming Language :: Python :: 3.9",
+  "Programming Language :: Python :: 3.10",
+  "Programming Language :: Python :: Implementation :: CPython",
+  "Programming Language :: Python :: Implementation :: PyPy",
+  "Operating System :: OS Independent",
+  "Topic :: Software Development :: Libraries",
+  "Topic :: Software Development :: Libraries :: Python Modules",
+  "Topic :: Software Development :: Testing",
+]
+dynamic = [
+  "version",
+]
+[project.optional-dependencies]
+coverage_plugin = [
+  "coverage",
+]
+dev = [
+  "Sphinx",
+  "sphinx-issues",
+  "sphinx_rtd_theme",
+]
+[project.urls]
+changelog = "https://docs.nose2.io/en/latest/changelog.html"
+documentation = "https://docs.nose2.io/"
+repository = "https://github.com/nose-devs/nose2"
+[project.scripts]
+nose2 = "nose2:discover"
+
+[tool.setuptools.dynamic]
+version = {attr = "nose2.__version__"}
+
 [tool.ruff]
 select = [
   "B",       # flake8-bugbear

setup.py

@@ -1,61 +1,3 @@
-import os
-import re
+from setuptools import setup
 
-from setuptools import find_packages, setup
-
-
-def read_version(filename):
-    # use of " over ' will be enforced by "black"
-    version_pattern = re.compile(r'__version__ = "([^"]*)"')
-    with open(filename) as fp:
-        for line in fp:
-            m = version_pattern.match(line)
-            if m:
-                return m.group(1)
-    raise Exception(f"could not parse version from {filename}")
-
-
-MAINTAINER = "Stephen Rosen"
-MAINTAINER_EMAIL = "[email protected]"
-
-LONG_DESCRIPTION = open(os.path.join(os.path.dirname(__file__), "README.rst")).read()
-
-setup(
-    name="nose2",
-    version=read_version("nose2/__init__.py"),
-    packages=find_packages(),
-    extras_require={
-        "coverage_plugin": ["coverage"],
-        "dev": [
-            "Sphinx",
-            "sphinx_rtd_theme",
-            "sphinx-issues",
-        ],
-    },
-    entry_points={"console_scripts": ["nose2 = nose2:discover"]},
-    # descriptive package info below
-    description="unittest2 with plugins, the successor to nose",
-    long_description=LONG_DESCRIPTION,
-    maintainer=MAINTAINER,
-    maintainer_email=MAINTAINER_EMAIL,
-    url="https://github.com/nose-devs/nose2",
-    classifiers=[
-        "Development Status :: 4 - Beta",
-        "Environment :: Console",
-        "Intended Audience :: Developers",
-        "License :: OSI Approved :: BSD License",
-        "Programming Language :: Python",
-        "Programming Language :: Python :: 3.6",
-        "Programming Language :: Python :: 3.7",
-        "Programming Language :: Python :: 3.8",
-        "Programming Language :: Python :: 3.9",
-        "Programming Language :: Python :: 3.10",
-        "Programming Language :: Python :: Implementation :: CPython",
-        "Programming Language :: Python :: Implementation :: PyPy",
-        "Operating System :: OS Independent",
-        "Topic :: Software Development :: Libraries",
-        "Topic :: Software Development :: Libraries :: Python Modules",
-        "Topic :: Software Development :: Testing",
-    ],
-    keywords=["unittest", "testing", "tests"],
-)
+setup()