packaging: update publish flow to latest setuptools

.github/workflows/python-package.yml

@@ -35,7 +35,6 @@ jobs:
       run: |
         python -m pip install --upgrade pip
         python -m pip install flake8 nose lit
-        python -m pip install -r requirements.txt
     - name: Lint with flake8
       run: |
         # stop the build if there are Python syntax errors or undefined names

.github/workflows/python-publish.yml

@@ -17,12 +17,12 @@ jobs:
         python-version: '3.x'
     - name: Install dependencies
       run: |
-        python -m pip install --upgrade pip
-        pip install setuptools wheel twine
+        python3 -m pip install --upgrade pip
+        python3 -m pip install --upgrade build twine
     - name: Build and publish
       env:
         TWINE_USERNAME: ${{ secrets.PYPI_USERNAME }}
         TWINE_PASSWORD: ${{ secrets.PYPI_PASSWORD }}
       run: |
-        python setup.py sdist bdist_wheel
-        twine upload dist/*
+        python3 -m build
+        python3 -m twine upload dist/*

pyproject.toml

@@ -0,0 +1,6 @@
+[build-system]
+requires = [
+    "setuptools>=42",
+    "wheel"
+]
+build-backend = "setuptools.build_meta"

setup.py

@@ -1,9 +1,13 @@
 #!/usr/bin/env python
 # -*- coding: utf-8 -*-
 
-from setuptools import setup
+import setuptools
 
-setup(
+with open("README.rst", "r", encoding="utf-8") as fh:
+    long_description = fh.read()
+
+
+setuptools.setup(
     name='scan-build',
     version='2.0.20',
     author='László Nagy',
@@ -12,9 +16,10 @@
     url='https://github.com/rizsotto/scan-build',
     license='LICENSE.txt',
     description='static code analyzer wrapper for Clang.',
-    long_description=open('README.rst').read(),
+    long_description=long_description,
+    long_description_content_type="text/x-rst",
     zip_safe=False,
-    install_requires=['typing; python_version < "3.5"'],
+    python_requires=">=3.6",
     packages=['libscanbuild', 'libear'],
     package_data={'libscanbuild': ['resources/*'],
                   'libear': ['config.h.in', 'ear.c']},
@@ -42,4 +47,5 @@
         "Programming Language :: Python :: 3.9",
         "Topic :: Software Development :: Compilers",
         "Topic :: Software Development :: Quality Assurance"
-    ])
+    ]
+)