Add GitHub Actions workflow for PyPI publishing

Author: ef1500

.github/workflows/publish.yml

@@ -0,0 +1,63 @@
+name: Build and Publish to PyPI
+
+on:
+  release:
+    types: [published]
+  # Optional: Allow manually running this workflow from the "Actions" tab for testing
+  workflow_dispatch:
+
+jobs:
+  build_wheels:
+    name: Build wheels on ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        # Mac, Windows, and Linux
+        os: [ubuntu-latest, windows-latest, macos-latest]
+
+    steps:
+      - uses: actions/checkout@v4
+
+      # Used to build the wheels
+      - name: Build wheels
+        uses: pypa/cibuildwheel@v2.16.5
+        env:
+          CIBW_SKIP: "cp36-* cp37-*"
+
+          # Ensure we build for both x86_64 and arm64 on Mac (Apple Silicon support)
+          CIBW_ARCHS_MACOS: x86_64 arm64
+
+      - uses: actions/upload-artifact@v3
+        with:
+          path: ./wheelhouse/*.whl
+
+  build_sdist:
+    name: Build source distribution
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Build sdist
+        run: pipx run build --sdist
+
+      - uses: actions/upload-artifact@v3
+        with:
+          path: dist/*.tar.gz
+
+  upload_pypi:
+    needs: [build_wheels, build_sdist]
+    runs-on: ubuntu-latest
+    
+    # Only upload to PyPI if this is a Release (not a manual test run)
+    if: github.event_name == 'release' && github.event.action == 'published'
+    
+    steps:
+      - uses: actions/download-artifact@v3
+        with:
+          name: artifact
+          path: dist
+
+      - uses: pypa/gh-action-pypi-publish@v1.8.10
+        with:
+          user: __token__
+          password: ${{ secrets.PYPI_API_TOKEN }}