Added separate wheel builder for python 3.8 or older (using numpy 1.x)

Author: translearn

.github/workflows/wheel_builder.yml

@@ -23,7 +23,7 @@ jobs:
         run: |
           python -m cibuildwheel --output-dir dist
         env:
-          CIBW_BUILD: cp36-* cp37-* cp38-* cp39-* cp310-* cp311-* cp312-* cp313-*
+          CIBW_BUILD: cp39-* cp310-* cp311-* cp312-* cp313-*
           CIBW_BEFORE_BUILD: python -m pip install cython
 
       - name: Publish package distributions to PyPI

.github/workflows/wheel_builder_python_3.8_or_older.yml

@@ -0,0 +1,32 @@
+name: build wheels python 3.6 to 3.8
+on:
+  workflow_dispatch:
+jobs:
+  build_wheels:
+    name: build wheels on ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-20.04]
+    environment: pypi
+    permissions:
+      id-token: write
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-python@v2
+
+      - name: cibuildwheel installation
+        run: python -m pip install cibuildwheel==1.11.0 twine
+          
+      - name: build specified wheels on ubuntu
+        if: matrix.os == 'ubuntu-20.04'
+        run: |
+          python -m cibuildwheel --output-dir dist
+        env:
+          CIBW_BUILD: cp36-* cp37-* cp38-*
+          CIBW_BEFORE_BUILD: python -m pip install cython
+          
+      - name: Publish package distributions to PyPI
+        uses: pypa/gh-action-pypi-publish@release/v1
+        with:
+          skip-existing: true