Add pyproject.toml and switch setup.py to setup.cfg

pyproject.toml

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

setup.cfg

@@ -0,0 +1,36 @@
+[metadata]
+name = PySnooper
+version = attr: pysnooper.__version__
+author = Ram Rachum
+author_email = ram@rachum.com
+description = A poor man's debugger for Python.
+url = https://github.com/cool-RR/PySnooper
+long_description = file: README.md
+long_description_content_type = text/markdown
+classifiers =
+    Environment :: Console
+    Intended Audience :: Developers
+    Programming Language :: Python :: 2.7
+    Programming Language :: Python :: 3.4
+    Programming Language :: Python :: 3.5
+    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 :: 3.11
+    Programming Language :: Python :: Implementation :: CPython
+    Programming Language :: Python :: Implementation :: PyPy
+    License :: OSI Approved :: MIT License
+    Operating System :: OS Independent
+    Topic :: Software Development :: Debuggers
+
+[options]
+packages = find:
+install_requires = file: requirements.in
+
+[options.packages.find]
+exclude = tests*
+
+[options.extras_require]
+tests = pytest

setup.py

@@ -1,48 +0,0 @@
-# Copyright 2019 Ram Rachum and collaborators.
-# This program is distributed under the MIT license.
-import setuptools
-import re
-
-
-def read_file(filename):
-    with open(filename) as file:
-        return file.read()
-
-version = re.search("__version__ = '([0-9.]*)'",
-                    read_file('pysnooper/__init__.py')).group(1)
-
-setuptools.setup(
-    name='PySnooper',
-    version=version,
-    author='Ram Rachum',
-    author_email='ram@rachum.com',
-    description="A poor man's debugger for Python.",
-    long_description=read_file('README.md'),
-    long_description_content_type='text/markdown',
-    url='https://github.com/cool-RR/PySnooper',
-    packages=setuptools.find_packages(exclude=['tests*']),
-    install_requires=read_file('requirements.in'),
-    extras_require={
-        'tests': {
-            'pytest',
-        },
-    },
-    classifiers=[
-        'Environment :: Console',
-        'Intended Audience :: Developers',
-        'Programming Language :: Python :: 2.7',
-        'Programming Language :: Python :: 3.4',
-        'Programming Language :: Python :: 3.5',
-        '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 :: 3.11',
-        'Programming Language :: Python :: Implementation :: CPython',
-        'Programming Language :: Python :: Implementation :: PyPy',
-        'License :: OSI Approved :: MIT License',
-        'Operating System :: OS Independent',
-        'Topic :: Software Development :: Debuggers',
-    ],
-)