Actions: Only build as a pure-Python wheel

Workflow was copy-pasted from a Cython project...

Author: olivierdelree

.github/workflows/wheels.yml

@@ -9,56 +9,44 @@ permissions:
 
 jobs:
   build_wheels:
-    name: Build wheels on ${{ matrix.os }}
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        os: [ubuntu-latest, ubuntu-24.04-arm, windows-latest, macos-13, macos-14]
+    name: Build distribution
+    runs-on: ubuntu-latest
 
     steps:
       - uses: actions/checkout@v4
 
-      - name: Build wheels
-        uses: pypa/cibuildwheel@v2.23.3
-        env:
-          CIBW_SKIP: "*i686"  # Ignore i686, takes a long time and we don't need it
-
-      - uses: actions/upload-artifact@v4
+      - name: Setup python
+        uses: actions/setup-python@v5
         with:
-          name: cibw-wheel-${{ matrix.os }}-${{ strategy.job-index }}
-          path: wheelhouse/*.whl
+          python-version: "3.12"
 
-  make_sdist:
-    name: Make SDist
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
+      - name: Install pypa/build
+        run: python3 -m pip install build --user
 
-      - name: Build SDist
-        run: pipx run build --sdist
+      - name: Build wheel
+        run: python3 -m build
 
-      - uses: actions/upload-artifact@v4
+      - name: Store build
+        uses: actions/upload-artifact@v4
         with:
-          name: cibw-sdist
-          path: dist/*.tar.gz
+          name: python-package-distributions
+          path: dist/
 
   release:
-    needs: [build_wheels, make_sdist]
+    needs: [build_wheels]
     name: Release
     runs-on: ubuntu-latest
     steps:
       - uses: actions/download-artifact@v4
         with:
-          pattern: cibw-*
-          path: dist
-          merge-multiple: true
+          path: dist/
 
       - uses: ncipollo/release-action@v1
         with:
           artifacts: "dist/*"
 
   upload_all:
-    needs: [build_wheels, make_sdist]
+    needs: [build_wheels]
     name: Upload to PyPI
     environment: pypi
     permissions:
@@ -67,9 +55,7 @@ jobs:
     steps:
       - uses: actions/download-artifact@v4
         with:
-          pattern: cibw-*
-          path: dist
-          merge-multiple: true
+          path: dist/
 
       - uses: pypa/gh-action-pypi-publish@release/v1