simplify and streamline release GitHub workflow

Simplify: use only one command to build both the wheel and source distribution using the build module, as recommended by packaging.python.org

Streamline: only trigger the upload_test_pypi job when manually running the workflow. Before, it would also trigger on releases, but this is unnecessary. This way, the test.pypi.org channel can also be used to test an upload without having to bump the version.

.github/workflows/release.yml

@@ -7,67 +7,44 @@ on:
       - published
 
 jobs:
-  build_wheel:
-    name: Build universal wheel
+  build:
+    name: Build universal wheel and source distribution
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-
       - uses: ./.github/actions/install-python-and-package
         with:
           extras-require: publishing
-
-      - name: Build wheel
-        run: python setup.py bdist_wheel
-
+      - name: Build wheel and source distribution
+        run: python -m build
       - uses: actions/upload-artifact@v3
         with:
-          path: dist/*.whl
-
-  build_sdist:
-    name: Build source distribution
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v3
-
-      - uses: ./.github/actions/install-python-and-package
-        with:
-          extras-require: publishing
-
-      - name: Build sdist
-        run: python setup.py sdist
-
-      - uses: actions/upload-artifact@v3
-        with:
-          path: dist/*.tar.gz
-
+          path: dist/*
 
   upload_test_pypi:
-    needs: [build_wheel, build_sdist]
+    needs: [build]
     runs-on: ubuntu-latest
+    if: github.event_name == 'workflow_dispatch'
     steps:
       - uses: actions/download-artifact@v3
         with:
           name: artifact
           path: dist
-
       - uses: pypa/[email protected]
         with:
           user: __token__
           password: ${{ secrets.TEST_PYPI_TOKEN }}
           repository_url: https://test.pypi.org/legacy/
 
-
   upload_pypi:
-    needs: [build_wheel, build_sdist]
+    needs: [build]
     runs-on: ubuntu-latest
     if: github.event_name == 'release' && github.event.action == 'published'
     steps:
       - uses: actions/download-artifact@v3
         with:
           name: artifact
           path: dist
-
       - uses: pypa/[email protected]
         with:
           user: __token__

setup.cfg

@@ -72,6 +72,7 @@ dev =
     pandoc
     myst-parser
 publishing =
+    build
     twine
     wheel
 notebooks =