Build binary wheels for PyPI with cibuildwheel

.github/workflows/release.yml

@@ -7,7 +7,7 @@ on:
 
 jobs:
   build:
-    name: Upload Release Asset
+    name: Build sdist
     runs-on: ubuntu-latest
     steps:
       - name: Set up Python
@@ -22,31 +22,79 @@ jobs:
           pip install setuptools
           python setup.py sdist
 
-      - name: Create Release
-        id: create_release
-        uses: actions/create-release@v1
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      - uses: actions/upload-artifact@v4
         with:
-          tag_name: ${{ github.ref }}
-          release_name: ${{ github.ref }}
-          draft: false
-          prerelease: false
+          path: "dist/*.tar.gz"
+          name: dist
 
-      - name: Get Name of Artifact
+  build_wheels:
+    name: Build wheels on ${{ matrix.os }}, arch ${{ matrix.arch }}
+    runs-on: ${{ matrix.os }}
+    needs: build
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - os: ubuntu-latest
+            arch: x86_64
+          - os: ubuntu-latest
+            arch: i686
+          - os: macos-13
+            arch: auto
+          - os: macos-14
+            arch: auto
+    env:
+      # SPKGs to install as system packages
+      SPKGS: _bootstrap _prereq
+      # Non-Python packages to install as spkgs
+      TARGETS_PRE: gmp mpfr mpc fplll-ensure
+      # Disable building PyPy wheels on all platforms
+      CIBW_SKIP: "pp*"
+      #
+      CIBW_ARCHS: ${{ matrix.arch }}
+      # https://cibuildwheel.readthedocs.io/en/stable/options/#requires-python
+      CIBW_PROJECT_REQUIRES_PYTHON: ">=3.9"
+      # Environment during wheel build
+      CIBW_ENVIRONMENT: "PATH=$(pwd)/local/bin:$PATH CPATH=$(pwd)/local/include:$CPATH LIBRARY_PATH=$(pwd)/local/lib:$LIBRARY_PATH LD_LIBRARY_PATH=$(pwd)/local/lib:$LD_LIBRARY_PATH PKG_CONFIG_PATH=$(pwd)/local/share/pkgconfig:$PKG_CONFIG_PATH ACLOCAL_PATH=/usr/share/aclocal"
+      # Use 'build', not 'pip wheel'
+      CIBW_BUILD_FRONTEND: build
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          repository:   sagemath/sage
+          ref:          develop
+
+      - uses: actions/download-artifact@v4
+        with:
+          name: dist
+          path: dist
+
+      - uses: actions/setup-python@v5
+        # As of 2024-02-03, the macOS M1 runners do not have preinstalled python or pipx.
+        # Installing pipx follows the approach of https://github.com/pypa/cibuildwheel/pull/1743
+        id: python
+        with:
+          python-version: "3.8 - 3.12"
+          update-environment: false
+
+      - name: Build platform wheels
+        # We build the wheel from the sdist.
+        # But we must run cibuildwheel with the unpacked source directory, not a tarball,
+        # so that SAGE_ROOT is copied into the build containers.
+        #
+        # In the CIBW_BEFORE_ALL phase, we install libraries using the Sage distribution.
+        # https://cibuildwheel.readthedocs.io/en/stable/options/#before-all
         run: |
-          ARTIFACT_PATHNAME=$(ls dist/fpylll-*.tar.gz | head -n 1)
-          ARTIFACT_NAME=$(basename $ARTIFACT_PATHNAME)
-          echo "ARTIFACT_NAME=${ARTIFACT_NAME}" >> $GITHUB_ENV
-          echo "ARTIFACT_PATHNAME=${ARTIFACT_PATHNAME}" >> $GITHUB_ENV
-
-      - name: Upload Release Asset
-        id: upload-release-asset 
-        uses: actions/upload-release-asset@v1
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          "${{ steps.python.outputs.python-path }}" -m pip install pipx
+          export PATH=build/bin:$PATH
+          export CIBW_BEFORE_ALL="( $(sage-print-system-package-command debian --yes --no-install-recommends install $(sage-get-system-packages debian $SPKGS)) || $(sage-print-system-package-command fedora --yes --no-install-recommends install $(sage-get-system-packages fedora $SPKGS | sed s/pkg-config/pkgconfig/)) || ( $(sage-print-system-package-command homebrew --yes --no-install-recommends install $(sage-get-system-packages homebrew $SPKGS)) || $(sage-print-system-package-command alpine --yes --no-install-recommends install $(sage-get-system-packages alpine $SPKGS)) || echo error ignored) ) && ./bootstrap && ./configure --enable-build-as-root --enable-fat-binary && MAKE=\"make -j6\" make V=0 $TARGETS_PRE"
+          mkdir -p unpacked
+          for pkg in fpylll; do
+              (cd unpacked && tar xfz - ) < dist/$pkg*.tar.gz
+              "${{ steps.python.outputs.python-path }}" -m pipx run cibuildwheel==2.21.3 unpacked/$pkg*
+          done
+
+      - uses: actions/upload-artifact@v4
         with:
-          upload_url: ${{ steps.create_release.outputs.upload_url }}
-          asset_path: ${{ env.ARTIFACT_PATHNAME }}
-          asset_name: ${{ env.ARTIFACT_NAME }}
-          asset_content_type: application/gzip
+          name: wheels
+          path: ./wheelhouse/*.whl