[Fix] Fix manylinux pkg build workflow.

.github/workflows/python-publish.yml

@@ -5,58 +5,42 @@
 # They are provided by a third-party and are governed by
 # separate terms of service, privacy policy, and support
 # documentation.
-
-name: Upload Python Package
+name: Python package build and publish
 
 on:
   release:
-    types: [published]
+    types: [created]
 
 jobs:
   deploy:
-
     runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        python-version: [3.7]
-
     steps:
     - uses: actions/checkout@v2
-    - name: Set up Python ${{ matrix.python-version }} 
-      uses: actions/setup-python@v2
+    - name: Set up Python
+      uses: actions/setup-python@v1
       with:
-        python-version: '3.x'
-        #python-version: ${{ matrix.python-version }}
-    - name: Config 
-      run: |
-        sudo apt-get update
-        sudo apt-get install zip unzip wget python-is-python3
-        which python
-        which python3
+        python-version: 3.8
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        pip install build twine flake8
+        pip install twine flake8
     - name: Lint with flake8 for syntax errors
       run: |
         pip install flake8
         flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
         flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
-        pwd
-        ls -lh
     - name: Build manylinux Python wheels
       #uses: RalfG/[email protected]_x86_64
       uses: RalfG/[email protected]_x86_64
       with:
-        python-versions: 'cp37-cp37m cp38-cp38m cp39-cp39m'
+        # Note that starting with CPython 3.8, default sys.abiflags became an empty string: 
+        # the m flag for pymalloc became useless (builds with and without pymalloc are ABI 
+        # compatible) and so has been removed. (e.g. /opt/python/cp38-cp38)
+        python-versions: 'cp37-cp37m cp38-cp38 cp39-cp39'
         build-requirements: 'cython'
         package-path: './'
         system-packages: 'zip unzip wget git glibc'
         pip-wheel-args: '-w ./dist --no-deps -vvv'
-    - name: Build package
-      #run: python -m build
-      run: ls -lh
     - name: Publish wheels to PyPI
       env:
         TWINE_USERNAME: ${{ secrets.PYPI_USERNAME }}