osx.yml

name: Build ARM64 Python on macOS

on: [push, pull_request]

jobs:
  build:
    runs-on: macos-latest
    steps:
      - name: Set up Rosetta 2
        run: |
          softwareupdate --install-rosetta --agree-to-license || true

      - name: Download Python 3.11.8 Source
        run: |
          curl -O https://www.python.org/ftp/python/3.11.8/Python-3.11.8.tgz
          tar -xf Python-3.11.8.tgz
          cd Python-3.11.8

      - name: Build Python 3.11.8 for ARM64
        run: |
          cd Python-3.11.8
          arch -arm64 ./configure --prefix=$HOME/python-arm64 --enable-optimizations
          arch -arm64 make -j$(sysctl -n hw.ncpu)
          arch -arm64 make install

      - name: Verify Build
        run: |
          $HOME/python-arm64/bin/python3 --version
          $HOME/python-arm64/bin/python3 -c "import platform; print(platform.architecture())"