Use pipx for sdist

.github/workflows/pypi.yml

@@ -61,29 +61,29 @@ jobs:
           python-version: '3.x'
 
       - name: Build sdist
-        run: |
-            python -m pip install cython numpy setuptools_scm
-            python setup.py sdist
-
+        run: pipx run build --sdist
       - uses: actions/upload-artifact@v4
         with:
-          name: cibw-wheels-${{ matrix.os }}-${{ strategy.job-index }}
+          name: cibw-sdist
           path: dist/*.tar.gz
 
   upload_pypi:
     needs: [build_wheels, build_sdist]
     runs-on: ubuntu-latest
+    environment: pypi
     # upload to PyPI on every tag starting with 'v'
     # if: github.event_name == 'push' && startsWith(github.event.ref, 'refs/tags/v')
     # alternatively, to publish when a GitHub Release is created, use the following rule:
     if: github.event_name == 'release' && github.event.action == 'published'
     steps:
       - uses: actions/download-artifact@v4
-        with:
-          name: artifact
+      with:
+          # unpacks all CIBW artifacts into dist/
+          pattern: cibw-*
           path: dist
+          merge-multiple: true
 
-      - uses: pypa/gh-action-pypi-publish@master
+      - uses: pypa/gh-action-pypi-publish@release/v1
         with:
           user: __token__
           password: ${{ secrets.pypitoken }}