Restrict python version for building manylinux wheels

.github/workflows/python-publish.yml

@@ -24,22 +24,31 @@ jobs:
       uses: actions/setup-python@v2
       with:
         python-version: ${{ matrix.python-version }}
+    - name: Format python version
+      run: echo Building wheels for cp${py_vs}-cp${py_vs}m
+      env:
+        py_vs: echo ${{ matrix.python-version }} | sed 's/\.//g'
+        manylinux_version: "cp${py_vs}-cp${py_vs}m"
+    - name: State Python version
+      run: echo Manylinux wheels built for $manylinux_version
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
         python -m pip install setuptools wheel twine
         python -m pip install -U cibuildwheel
     - name: Build manylinux Python wheels
+      env:
+        PY_VERSION: $( echo ${{ matrix.python-version }} | sed 's/\.//g')
       if: ${{ matrix.os != 'macos-latest' }}
       uses: RalfG/[email protected]
       with:
-        python-versions: 'cp36-cp36m cp37-cp37m cp38-cp38m'
+        python-versions: "cp${PY_VERSION}-cp${PY_VERSION}m"
         build-requirements: 'cython numpy'
     - name: Build Python wheels
       if: ${{ matrix.os == 'macos-latest' }}
       run: |
          python setup.py bdist_wheel
-    - name: Build and publish to PyPI
+    - name: Build source tarball and publish to PyPI
       env:
         TWINE_USERNAME: __token__
         TWINE_PASSWORD: ${{ secrets.PYPI_API_TOKEN }}