build.yml

name: Build
on:
  push:
    branches:
      - main
  pull_request:

jobs:
  metadata:
    name: Check if version changed
    runs-on: ubuntu-latest
    outputs:
      optimize-build: ${{ github.event_name == 'push' }}
      release: ${{ github.event_name == 'push' && github.repository == 'Quantco/pixi-pack' && steps.version-metadata.outputs.changed == 'true' }}
      version: ${{ steps.version-metadata.outputs.newVersion }}
    steps:
      - name: Checkout source code
        uses: actions/checkout@v4
      - uses: Quantco/ui-actions/version-metadata@a0653e9fc0ee3c4be9f7cc88e509e40536e9f3c1
        id: version-metadata
        with:
          file: ./Cargo.toml
          token: ${{ secrets.GITHUB_TOKEN }}
          version-extraction-override: 'regex:version = "(.*)"'

  build:
    name: Build Binary
    runs-on: ${{ matrix.os }}
    needs: [metadata]
    strategy:
      fail-fast: false
      matrix:
        include:
          - target: x86_64-unknown-linux-musl
            os: ubuntu-latest-4core
          - target: aarch64-unknown-linux-musl
            os: ubuntu-latest-arm-4core
          - target: x86_64-pc-windows-msvc
            os: windows-latest
          - target: aarch64-apple-darwin
            os: macos-latest
          - target: x86_64-apple-darwin
            os: macos-13
    env:
      #
      # These are some environment variables that configure the build so that the binary size is reduced.
      # Inspiration was taken from this blog: https://arusahni.net/blog/2020/03/optimizing-rust-binary-size.html
      # They're only enable it on main and releases.
      #

      # Enable Link Time Optimization (LTO) for our release builds. This increases link time but drastically reduces
      # binary size.
      CARGO_PROFILE_RELEASE_LTO: ${{ needs.metadata.outputs.optimize-build }}

      # Use a single code gen unit, this effectively disables parallel linking but ensures that everything is linked
      # together in a single unit which reduces the file-size at the cost of link time.
      # Default for a release build is 16
      CARGO_PROFILE_RELEASE_CODEGEN_UNITS: ${{ needs.metadata.outputs.optimize-build && 1 || 16 }}

      # Strip the binaries. This reduces the filesize of the final release.
      CARGO_PROFILE_RELEASE_STRIP: ${{ needs.metadata.outputs.optimize-build && 'symbols' || 'false' }}

      # Optimize the binary for size. This reduces the filesize at the cost of a slower binary.
      CARGO_PROFILE_OPT_LEVEL: ${{ needs.metadata.outputs.optimize-build && 's' || '0' }}
    steps:
      - name: Checkout source code
        uses: actions/checkout@v4

      - name: Set up pixi
        uses: prefix-dev/setup-pixi@ba3bb36eb2066252b2363392b7739741bb777659
        with:
          activate-environment: true

      - name: Use static CRT on Windows
        shell: bash
        run: echo "RUSTFLAGS=${RUSTFLAGS} -C target-feature=+crt-static" >> "${GITHUB_ENV}"
        if: endsWith(matrix.target, 'windows-msvc')

      - uses: Swatinem/rust-cache@23bce251a8cd2ffc3c1075eaa2367cf899916d84
        with:
          key: build-${{ matrix.target }}

      - name: Show version information (Rust, cargo, GCC)
        run: |
          gcc --version || true
          rustup -V
          rustup toolchain list
          cargo -V
          rustc -V

      - name: Use rustls on musl targets.
        id: build-options
        if: contains(matrix.target, '-musl')
        run: |
          echo "CARGO_BUILD_OPTIONS=${CARGO_BUILD_OPTIONS} --no-default-features --features rustls-tls" >> $GITHUB_OUTPUT

      - name: Build
        run: >
          cargo build
          --locked
          --release
          ${{ steps.build-options.outputs.CARGO_BUILD_OPTIONS }}

      - name: "Artifact upload: binary"
        uses: actions/upload-artifact@v4
        with:
          name: pixi-pack-${{ matrix.target }}${{ endsWith(matrix.target, 'windows-msvc') && '.exe' || '' }}
          path: target/${{ matrix.target }}/release/pixi-pack${{ endsWith(matrix.target, 'windows-msvc') && '.exe' || '' }}

  release:
    name: Create Release
    needs: [metadata, build]
    if: needs.metadata.outputs.release
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - name: Download artifacts
        uses: actions/download-artifact@v4
        with:
          name: pixi-pack-*
          path: target
      - run: |
          tree target
      # - name: Push v${{ needs.metadata.outputs.version }} tag
      #   run: |
      #     git tag v${{ needs.metadata.outputs.version }}
      #     git push origin v${{ needs.metadata.outputs.version }}
      # - name: Create Release
      #   uses: softprops/action-gh-release@69320dbe05506a9a39fc8ae11030b214ec2d1f87
      #   if: needs.metadata.outputs.release
      #   with:
      #     generate_release_notes: true
      #     tag_name: v${{ needs.metadata.outputs.version }}
      #     draft: true
      #     files: |
      #       target/*/release/pixi-pack*