Try to build wheels

Author: finsberg

.github/workflows/wheels.yml

@@ -0,0 +1,113 @@
+name: Build and Publish Wheels
+
+on:
+  push:
+    branches: [ "main" ]
+    tags: [ "v*.*.*" ]
+  pull_request:
+    branches: [ "main" ]
+  workflow_dispatch:
+
+jobs:
+  build_sdist:
+    name: Build source distribution
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.x"
+          
+      - name: Build SDist
+        run: |
+          pip install build
+          python -m build --sdist
+          
+      - uses: actions/upload-artifact@v4
+        with:
+          name: cibw-sdist
+          path: dist/*.tar.gz
+
+  build_wheels:
+    name: Build wheels on ${{ matrix.os }} (${{ matrix.arch }})
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          # Linux
+          - os: ubuntu-latest
+            arch: x86_64
+          - os: ubuntu-latest
+            arch: aarch64
+            
+          # macOS (Intel and Apple Silicon)
+          - os: macos-13
+            arch: x86_64
+          - os: macos-14
+            arch: arm64
+            
+          # Windows
+          - os: windows-latest
+            arch: AMD64
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up QEMU (for Linux ARM64)
+        if: runner.os == 'Linux' && matrix.arch == 'aarch64'
+        uses: docker/setup-qemu-action@v3
+
+      - name: Install dependencies (macOS)
+        if: runner.os == 'macOS'
+        run: |
+          brew install gcc ninja
+          
+      - name: Setup MSYS2 (Windows)
+        if: runner.os == 'Windows'
+        uses: msys2/setup-msys2@v2
+        with:
+          msystem: MINGW64
+          update: true
+          install: >-
+            mingw-w64-x86_64-gcc
+            mingw-w64-x86_64-gcc-fortran
+            mingw-w64-x86_64-cmake
+            mingw-w64-x86_64-ninja
+          # crucial to allow cibuildwheel to see the MSYS2 tools
+          path-type: inherit
+
+      - name: Build wheels
+        uses: pypa/cibuildwheel@v2.17.0
+        env:
+          CIBW_ARCHS: "${{ matrix.arch }}"
+
+      - uses: actions/upload-artifact@v4
+        with:
+          name: cibw-wheels-${{ matrix.os }}-${{ matrix.arch }}
+          path: ./wheelhouse/*.whl
+
+  upload_pypi:
+    name: Upload to PyPI
+    needs: [build_wheels, build_sdist]
+    runs-on: ubuntu-latest
+    # Only publish on version tags
+    if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags/v')
+    
+    # Required for PyPI Trusted Publishing (OIDC)
+    environment:
+      name: pypi
+      url: https://pypi.org/p/mpi-stubs
+    permissions:
+      id-token: write
+      
+    steps:
+      - uses: actions/download-artifact@v4
+        with:
+          pattern: cibw-*
+          merge-multiple: true
+          path: dist
+
+      - name: Publish package distributions to PyPI
+        uses: pypa/gh-action-pypi-publish@release/v1

pyproject.toml

@@ -30,3 +30,25 @@ mpiexec = "mpi_stubs:mpiexec"
 wheel.packages = ["python/mpi_stubs"]
 # Tell CMake to install its artifacts into an inner 'data' folder
 wheel.install-dir = "mpi_stubs/data"
+
+
+# ... (Keep existing pyproject.toml contents) ...
+
+[tool.cibuildwheel]
+# Skip PyPy (unless you specifically want to support it) and Musllinux (to save CI time, add back if needed)
+skip = ["pp*", "*-musllinux*"]
+build-frontend = "build"
+# Run a quick sanity check to ensure the python package imports correctly
+test-command = "python -c \"import mpi_stubs; print('Successfully imported mpi_stubs')\""
+
+[tool.cibuildwheel.linux]
+# manylinux images are CentOS/AlmaLinux based; we need to install gfortran before building
+before-all = "yum install -y gcc-gfortran"
+
+[tool.cibuildwheel.macos]
+# Force scikit-build-core to use the Homebrew gfortran we will install in the workflow
+environment = { FC = "$(ls $(brew --prefix)/bin/gfortran* | sort -V | tail -n 1)" }
+
+[tool.cibuildwheel.windows]
+# Force scikit-build-core to use MSYS2/MinGW toolchain instead of MSVC (which lacks Fortran)
+environment = { CC = "gcc", CXX = "g++", FC = "gfortran", CMAKE_GENERATOR = "MinGW Makefiles", PATH = "C:\\msys64\\mingw64\\bin;%PATH%" }