Adjust publish workflow

.github/workflows/pypi.yml

@@ -3,13 +3,14 @@ name: Publish Python 🐍 distribution 📦 to PyPI and TestPyPI
 on: push
 
 jobs:
-  build:
+  build_wheels:
     name: Build wheels on ${{ matrix.os }}
     runs-on: ${{ matrix.os }}
+    if: startsWith(github.ref, 'refs/tags/')  # only build on tag pushes
     strategy:
       matrix:
         # macos-13 is an intel runner, macos-14 is apple silicon
-        os: [ubuntu-latest, ] # windows-latest, macos-13, macos-14]
+        os: [ubuntu-latest, ] #windows-latest, macos-13, macos-14]
 
     steps:
       - uses: actions/checkout@v4
@@ -29,27 +30,43 @@ jobs:
           name: cibw-wheels-${{ matrix.os }}-${{ strategy.job-index }}
           path: ./wheelhouse/*.whl
 
-  publish-to-pypi:
-    name: >-
-      Publish Python 🐍 distribution 📦 to PyPI
-    if: startsWith(github.ref, 'refs/tags/')  # only publish to PyPI on tag pushes
-    needs:
-    - build
+  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@v4
+        with:
+          name: cibw-sdist
+          path: dist/*.tar.gz
+
+  upload_pypi:
+    needs: [build_wheels, build_sdist]
     runs-on: ubuntu-latest
     environment:
       name: pypi
       url: https://pypi.org/p/extrainterpreters
     permissions:
-      id-token: write  # IMPORTANT: mandatory for trusted publishing
-
+      id-token: write
+    if: startsWith(github.ref, 'refs/tags/')  # only publish to PyPI on tag pushes
+    # if: github.event_name == 'release' && github.event.action == 'published'
+    # or, alternatively, upload to PyPI on every tag starting with 'v' (remove on: release above to use this)
+    # if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags/v')
     steps:
-    - name: Download all the dists
-      uses: actions/[email protected]
-      with:
-        name: python-package-distributions
-        path: wheelhouse/
-    - name: Publish distribution 📦 to PyPI
-      uses: pypa/gh-action-pypi-publish@release/v1
+      - uses: actions/download-artifact@v4
+        with:
+          # unpacks all CIBW artifacts into dist/
+          pattern: cibw-*
+          path: dist
+          merge-multiple: true
+
+      - uses: pypa/gh-action-pypi-publish@release/v1
+        #with:
+          ## To test: repository-url: https://test.pypi.org/legacy/
 
   github-release:
     name: >-
@@ -67,10 +84,12 @@ jobs:
 
     steps:
     - name: Download all the dists
-      uses: actions/[email protected]
-      with:
-        name: python-package-distributions
-        path: dist/
+      - uses: actions/download-artifact@v4
+        with:
+          # unpacks all CIBW artifacts into dist/
+          pattern: cibw-*
+          path: dist
+          merge-multiple: true
     - name: Sign the dists with Sigstore
       uses: sigstore/[email protected]
       with: