Split sdist and pypi uploads into separate jobs

.github/workflows/build.yml

@@ -1,8 +1,36 @@
-name: Build
+name: Build wheels
 
 on: [push, pull_request]
 
 jobs:
+  build_sdist:
+    name: Build source
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+
+    steps:
+    - uses: actions/checkout@master
+      with:
+        submodules: 'recursive'
+
+    - uses: actions/setup-python@v5
+      name: Install Python
+      with:
+        python-version: '3.12'
+
+    - name: Build source
+      run: |
+        python -m pip install build
+        python -m build --sdist --outdir=wheelhouse
+
+    - name: Upload sdist to github
+      uses: actions/upload-artifact@v4
+      with:
+        name: wheels-sdist
+        path: wheelhouse/*.tar.gz
+        if-no-files-found: error
+
   build_wheels:
     name: Build wheel on ${{ matrix.os }}
     runs-on: ${{ matrix.os }}
@@ -56,35 +84,34 @@ jobs:
         CIBW_ENVIRONMENT_WINDOWS: CMAKE_GENERATOR="Visual Studio 17 2022" CMAKE_GENERATOR_PLATFORM=x64
         CIBW_BUILD_VERBOSITY: 1
 
-    - name: Build source
-      if: startsWith(matrix.os, 'ubuntu')
-      run: |
-        python -m build --sdist --outdir=wheelhouse
-
-    - name: Release to pypi
-      if: github.event_name == 'push' && startsWith(github.event.ref, 'refs/tags')
-      env:
-        TWINE_USERNAME: __token__
-        TWINE_PASSWORD: ${{ secrets.pypi_password }}
-      run: |
-        python -m pip install --upgrade twine
-        twine upload wheelhouse/*
-
     - name: Upload artifacts to github
       uses: actions/upload-artifact@v4
       with:
         name: wheels-${{ matrix.os }}
-        path: ./wheelhouse
+        path: ./wheelhouse/*.whl
         if-no-files-found: error
 
-  merge_artifacts:
-    name: Merge wheel artifacts from build_wheels OS matrix jobs
+  publish_to_pypi:
+    name: Publish wheels to PyPi
+    if: github.event_name == 'push' && startsWith(github.event.ref, 'refs/tags')
+    needs: [build_sdist, build_wheels]
     runs-on: ubuntu-latest
-    needs: build_wheels
+
     steps:
-      - name: Merge artifacts
-        uses: actions/upload-artifact/merge@v4
+      - name: Download packages
+        uses: actions/download-artifact@v4
         with:
-          name: wheels
           pattern: wheels-*
-          delete-merged: true
+          path: wheelhouse
+          merge-multiple: true
+
+      - name: Print out packages
+        run: ls wheelhouse
+
+      - name: Upload wheels to pypi
+        env:
+          TWINE_USERNAME: __token__
+          TWINE_PASSWORD: ${{ secrets.pypi_password }}
+        run: |
+          python -m pip install --upgrade twine
+          twine upload wheelhouse/*