release.yml

name: Ruby Release

on:
  workflow_dispatch:
    inputs:
      dry_run:
        description: "Dry run (build only, do not publish)"
        required: false
        type: boolean

permissions:
  contents: read

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v6
        with:
          submodules: true
      - uses: ruby/setup-ruby@v1
        with:
          ruby-version: "3.3"
          bundler-cache: true
      - name: Verify submodule checkout
        run: |
          set -euo pipefail
          git submodule status --recursive
          for path in submodules/mlx submodules/mlx-onnx submodules/mlx-ruby-examples; do
            git submodule status -- "$path" >/dev/null
          done
      - name: Set Ruby crash report path
        run: echo "RUBY_CRASH_REPORT=${RUNNER_TEMP}/ruby-crash-report.log" >> "$GITHUB_ENV"
      - name: Install build tools
        run: |
          sudo apt-get update
          sudo apt-get install -y build-essential cmake libopenblas-dev liblapacke-dev

      - name: Build native extension
        run: |
          cd ext/mlx
          ruby extconf.rb
          make -j2
      - name: Install dependencies
        run: bundle install
      - name: Run test suite
        env:
          RUBYOPT: -W:deprecated -W:performance
        run: bundle exec rake test:all
      - name: Smoke test packaged gem install and load
        env:
          TEST: test/gem/gem_test.rb
        run: bundle exec rake test:gem
      - name: Show Ruby crash report (if present)
        if: always()
        run: |
          if [ -f "${RUBY_CRASH_REPORT}" ]; then
            echo "::group::Ruby crash report"
            cat "${RUBY_CRASH_REPORT}"
            echo "::endgroup::"
          else
            echo "No Ruby crash report emitted."
          fi
      - name: Build gem
        run: gem build mlx.gemspec
      - name: Upload gem artifact
        uses: actions/upload-artifact@v4
        with:
          name: mlx-gem
          path: mlx-*.gem
          if-no-files-found: error

  publish:
    if: ${{ !inputs.dry_run }}
    needs: build
    runs-on: ubuntu-latest
    permissions:
      contents: write
    steps:
      - uses: actions/download-artifact@v4
        with:
          name: mlx-gem
          path: pkg
      - name: Push to RubyGems
        if: secrets.RUBYGEMS_API_KEY != ''
        env:
          RUBYGEMS_API_KEY: ${{ secrets.RUBYGEMS_API_KEY }}
        run: |
          set -euo pipefail
          mkdir -p ~/.gem
          cat > ~/.gem/credentials <<EOF
          ---
          :rubygems_api_key: ${RUBYGEMS_API_KEY}
          EOF
          chmod 0600 ~/.gem/credentials
          gem push pkg/mlx-*.gem --key rubygems --host https://rubygems.org