Clean up packaging and build system (#167)

* Tell git to not ignore egg files that are not the correct .egg-info/ dir
* Tell git to ignore the dist/ directory where sdist/bdist files are stored
* Make the setup.py executable without prefixing it with python
* Migrate packaging metadata from setup.py to declarative setup.cfg
* Add PEP-518 pyproject.toml file

Author: pabs3

.gitignore

@@ -1,5 +1,5 @@
 *.pyc
-*egg*
+pytest_rerunfailures.egg-info/
 .DS_Store
 .Python
 .cache/
@@ -8,6 +8,7 @@
 .tox*
 bin/
 build/*
+dist/
 include/
 lib/
 pip-selfcheck.json

HEADER.rst

@@ -0,0 +1 @@
+.. contents::

pyproject.toml

@@ -0,0 +1,5 @@
+[build-system]
+requires = [
+    "setuptools >= 40.0",
+]
+build-backend = "setuptools.build_meta"

setup.cfg

@@ -4,3 +4,45 @@ universal = 0
 [check-manifest]
 ignore =
     .pre-commit-config.yaml
+
+[metadata]
+name = pytest-rerunfailures
+version = 10.2.dev0
+url = https://github.com/pytest-dev/pytest-rerunfailures
+description = pytest plugin to re-run tests to eliminate flaky failures
+long_description = file: HEADER.rst, README.rst, CHANGES.rst
+author = Leah Klearman
+author_email = lklrmn@gmail.com
+license = Mozilla Public License 2.0 (MPL 2.0)
+keywords = py.test pytest rerun failures flaky
+classifiers =
+    Development Status :: 5 - Production/Stable
+    Framework :: Pytest
+    Intended Audience :: Developers
+    License :: OSI Approved :: Mozilla Public License 2.0 (MPL 2.0)
+    Operating System :: POSIX
+    Operating System :: Microsoft :: Windows
+    Operating System :: MacOS :: MacOS X
+    Topic :: Software Development :: Quality Assurance
+    Topic :: Software Development :: Testing
+    Topic :: Utilities
+    Programming Language :: Python :: 3
+    Programming Language :: Python :: 3.6
+    Programming Language :: Python :: 3.7
+    Programming Language :: Python :: 3.8
+    Programming Language :: Python :: 3.9
+    Programming Language :: Python :: 3 :: Only
+    Programming Language :: Python :: Implementation :: CPython
+    Programming Language :: Python :: Implementation :: PyPy
+
+[options]
+zip_safe = False
+py_modules = pytest_rerunfailures
+python_requires = >= 3.6
+install_requires =
+    setuptools >= 40.0
+    pytest >= 5.3
+
+[options.entry_points]
+pytest11 =
+    rerunfailures = pytest_rerunfailures

setup.py

@@ -1,44 +1,4 @@
+#!/usr/bin/env python
 from setuptools import setup
 
-with open("README.rst") as readme, open("CHANGES.rst") as changelog:
-    long_description = ".. contents::\n\n" + readme.read() + "\n\n" + changelog.read()
-
-setup(
-    name="pytest-rerunfailures",
-    version="10.2.dev0",
-    description="pytest plugin to re-run tests to eliminate flaky failures",
-    long_description=long_description,
-    author="Leah Klearman",
-    author_email="lklrmn@gmail.com",
-    url="https://github.com/pytest-dev/pytest-rerunfailures",
-    py_modules=["pytest_rerunfailures"],
-    entry_points={"pytest11": ["rerunfailures = pytest_rerunfailures"]},
-    install_requires=[
-        "setuptools>=40.0",
-        "pytest >= 5.3",
-    ],
-    python_requires=">=3.6",
-    license="Mozilla Public License 2.0 (MPL 2.0)",
-    keywords="py.test pytest rerun failures flaky",
-    zip_safe=False,
-    classifiers=[
-        "Development Status :: 5 - Production/Stable",
-        "Framework :: Pytest",
-        "Intended Audience :: Developers",
-        "License :: OSI Approved :: Mozilla Public License 2.0 (MPL 2.0)",
-        "Operating System :: POSIX",
-        "Operating System :: Microsoft :: Windows",
-        "Operating System :: MacOS :: MacOS X",
-        "Topic :: Software Development :: Quality Assurance",
-        "Topic :: Software Development :: Testing",
-        "Topic :: Utilities",
-        "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.6",
-        "Programming Language :: Python :: 3.7",
-        "Programming Language :: Python :: 3.8",
-        "Programming Language :: Python :: 3.9",
-        "Programming Language :: Python :: 3 :: Only",
-        "Programming Language :: Python :: Implementation :: CPython",
-        "Programming Language :: Python :: Implementation :: PyPy",
-    ],
-)
+setup()