release.yml

# Package up release artifacts, and attach them to a new GitHub prerelease.

name: Release

# Triggers:
#   - Push a version tag (e.g. git tag v0.1.0 && git push --tags) for a real release.
#   - workflow_dispatch for ad-hoc test builds without creating a tag.
#     Wheels are uploaded as GitHub Actions artifacts and no GitHub Release is created.
on:
  push:
    tags:
      - "v*"
  pull_request:
    paths:
      - ".github/workflows/release.yml"
  workflow_dispatch:

# Minimal permissions by default; create-github-release job adds write where needed.
permissions:
  contents: read

env:
  # Bump these in one place when upgrading toolchains or maturin.
  # RUST_STABLE and RUST_NIGHTLY must also be kept in sync with the defaults
  # in .github/actions/setup-rust/action.yml.
  PYTHON_VERSION: "3.12"
  RUST_STABLE: "1.92.0"
  RUST_NIGHTLY: "nightly-2026-04-27"
  MATURIN_VERSION: "v1.13.3"

jobs:
  # Verify that the versions in pyproject.toml and Cargo.toml match the tag
  # (or the manually-supplied version label) before spending time on builds.
  check-version:
    name: "Check version consistency"
    runs-on: ubuntu-24.04
    steps:
      - uses: actions/checkout@v6

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: ${{ env.PYTHON_VERSION }}

      - name: Verify versions match
        shell: bash
        run: |
          if [[ "${{ github.ref }}" == refs/tags/v* ]]; then
            python scripts/check_version_sync.py --tag "${{ github.ref_name }}"
          else
            python scripts/check_version_sync.py
          fi

  # Build CPython for WASI on a Linux runner and upload it as an artifact.
  # Since WASI is platform-independent, this artifact is reused by both the
  # macOS and Windows runner jobs to completely avoid compiling CPython from
  # source (which adds CI time and is problematic on Windows).
  build-cpython-wasi:
    name: "Build CPython for WASI"
    runs-on: ubuntu-24.04
    needs: [check-version]
    steps:
      - uses: actions/checkout@v6

      - name: Set up Rust toolchains
        uses: ./.github/actions/setup-rust
        with:
          rust-stable: ${{ env.RUST_STABLE }}
          rust-nightly: ${{ env.RUST_NIGHTLY }}

      - name: Build CPython WASI via cargo check
        run: |
          cargo fetch
          # Trigger execution of build scripts by running cargo check.
          # This fully compiles CPython inside componentize-py's build.rs,
          # but skips compiling heavy Rust machine code, saving massive time!
          cargo check --locked --manifest-path crates/fastly-compute-py/Cargo.toml

      - name: Package CPython WASI builddir
        shell: bash
        run: |
          MANIFEST_DIR="$(python .github/scripts/get-componentize-py-dir.py)"
          echo "Found componentize-py at $MANIFEST_DIR"
          tar -czf cpython-wasi.tar.gz -C "$MANIFEST_DIR" --exclude="*/bin/*" --exclude="*.pc" --exclude="*/man/*" cpython/builddir/wasi

      - name: Upload CPython WASI artifact
        uses: actions/upload-artifact@v4
        with:
          name: cpython-wasi
          path: cpython-wasi.tar.gz
          if-no-files-found: error

  # Linux wheels are built inside manylinux_2_28 containers via maturin-action.
  # We explicitly target manylinux 2_28; auto likely would too but pinning
  # avoids unexpected wheel renames. See https://github.com/pypa/manylinux.
  #
  # The composite setup-rust action cannot run inside the maturin-action
  # container, so toolchain setup is handled via before-script-linux instead.
  build-linux:
    name: "Linux ${{ matrix.target }}"
    runs-on: ubuntu-24.04
    needs: [check-version, build-cpython-wasi]
    strategy:
      fail-fast: false
      matrix:
        include:
          - target: x86_64-unknown-linux-gnu
            manylinux: "2_28"
          - target: aarch64-unknown-linux-gnu
            manylinux: "2_28"

    steps:
      - uses: actions/checkout@v6

      - name: Download CPython WASI artifact
        uses: actions/download-artifact@v4
        with:
          name: cpython-wasi

      - name: Build wheels
        uses: PyO3/maturin-action@v1
        with:
          maturin-version: ${{ env.MATURIN_VERSION }}
          target: ${{ matrix.target }}
          manylinux: ${{ matrix.manylinux }}
          rust-toolchain: ${{ env.RUST_STABLE }}
          # abi3-py312 is set in [tool.maturin] features; no -i needed.
          args: --release --locked --compatibility pypi
          before-script-linux: |
            .github/scripts/setup-nightly.sh ${{ env.RUST_NIGHTLY }}
            rustup target add wasm32-unknown-unknown
            cargo fetch
            MANIFEST_DIR="$(python .github/scripts/get-componentize-py-dir.py)"
            echo "Found componentize-py inside container at $MANIFEST_DIR"
            tar -xzf cpython-wasi.tar.gz -C "$MANIFEST_DIR"

      - name: Upload wheels
        uses: actions/upload-artifact@v4
        with:
          name: wheels-linux-${{ matrix.target }}
          path: target/wheels/*.whl
          if-no-files-found: error

  # macOS wheels — native builds on GitHub-hosted runners.
  # macos-14 is Apple Silicon (aarch64); macos-13 is Intel (x86_64).
  build-macos:
    name: "macOS ${{ matrix.target }}"
    runs-on: ${{ matrix.runner }}
    needs: [check-version, build-cpython-wasi]
    strategy:
      fail-fast: false
      matrix:
        include:
          - target: x86_64-apple-darwin
            runner: macos-26-intel
            # Maturin defaults to 10.12 for x86_64, but componentize-py's
            # build.rs compiles a native CPython host binary that requires
            # >=10.15 (sqlite3_create_window_function) with Xcode 26's SDK.
            # Python 3.12 itself requires 10.13+, so 10.15 is a safe minimum.
            macosx_deployment_target: "10.15"
          - target: aarch64-apple-darwin
            runner: macos-26
            macosx_deployment_target: "11.0"

    steps:
      - uses: actions/checkout@v6

      - name: Set up Rust toolchains
        uses: ./.github/actions/setup-rust
        with:
          rust-stable: ${{ env.RUST_STABLE }}
          rust-nightly: ${{ env.RUST_NIGHTLY }}

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: ${{ env.PYTHON_VERSION }}

      - name: Download CPython WASI artifact
        uses: actions/download-artifact@v4
        with:
          name: cpython-wasi

      - name: Restore CPython WASI
        shell: bash
        run: |
          cargo fetch
          MANIFEST_DIR="$(python .github/scripts/get-componentize-py-dir.py)"
          echo "Found componentize-py at $MANIFEST_DIR"
          tar -xzf cpython-wasi.tar.gz -C "$MANIFEST_DIR"

      - name: Build wheels
        uses: PyO3/maturin-action@v1
        with:
          maturin-version: ${{ env.MATURIN_VERSION }}
          target: ${{ matrix.target }}
          # container: off is implied for non-Linux but set explicitly for clarity.
          container: "off"
          # abi3-py312 is set in [tool.maturin] features; no -i needed.
          args: --release --locked
        env:
          MACOSX_DEPLOYMENT_TARGET: ${{ matrix.macosx_deployment_target }}

      - name: Upload wheels
        uses: actions/upload-artifact@v4
        with:
          name: wheels-macos-${{ matrix.target }}
          path: target/wheels/*.whl
          if-no-files-found: error

  # Windows wheel — native build on windows-latest (x86_64).
  build-windows:
    name: "Windows x86_64"
    runs-on: windows-latest
    needs: [check-version, build-cpython-wasi]

    steps:
      - uses: actions/checkout@v6

      - name: Set up Rust toolchains
        uses: ./.github/actions/setup-rust
        with:
          rust-stable: ${{ env.RUST_STABLE }}
          rust-nightly: ${{ env.RUST_NIGHTLY }}

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: ${{ env.PYTHON_VERSION }}

      - name: Download CPython WASI artifact
        uses: actions/download-artifact@v4
        with:
          name: cpython-wasi

      - name: Restore CPython WASI
        shell: bash
        run: |
          cargo fetch
          MANIFEST_DIR="$(python .github/scripts/get-componentize-py-dir.py)"
          echo "Found componentize-py at $MANIFEST_DIR"
          tar -xzf cpython-wasi.tar.gz -C "$MANIFEST_DIR"

      - name: Build wheels
        uses: PyO3/maturin-action@v1
        with:
          maturin-version: ${{ env.MATURIN_VERSION }}
          target: x86_64-pc-windows-msvc
          container: "off"
          # abi3-py312 is set in [tool.maturin] features; no -i needed.
          args: --release --locked

      - name: Upload wheels
        uses: actions/upload-artifact@v4
        with:
          name: wheels-windows-x86_64
          path: target/wheels/*.whl
          if-no-files-found: error

  # Build a source distribution for PyPI alongside the binary wheels.
  build-sdist:
    name: "Build sdist"
    runs-on: ubuntu-24.04
    needs: [check-version]
    steps:
      - uses: actions/checkout@v6

      - name: Build sdist
        uses: PyO3/maturin-action@v1
        with:
          maturin-version: ${{ env.MATURIN_VERSION }}
          command: sdist
          args: --out dist

      - name: Upload sdist
        uses: actions/upload-artifact@v4
        with:
          name: sdist
          path: dist/*.tar.gz
          if-no-files-found: error

  # Collect all release artifacts (wheels + sdist) into a single artifact,
  # generate SHA256 checksums, and upload everything together.
  collect-artifacts:
    name: "Collect release artifacts"
    needs: [build-linux, build-macos, build-windows, build-sdist]
    runs-on: ubuntu-24.04

    steps:
      - name: Download all wheel artifacts
        uses: actions/download-artifact@v4
        with:
          pattern: wheels-*
          path: dist/
          merge-multiple: true

      - name: Download sdist
        uses: actions/download-artifact@v4
        with:
          name: sdist
          path: dist/

      - name: Generate SHA256 checksums
        run: |
          cd dist
          sha256sum *.whl *.tar.gz > checksums.txt
          cat checksums.txt

      - name: List artifacts
        run: ls -lh dist/

      - name: Upload combined artifact
        uses: actions/upload-artifact@v4
        with:
          name: release-artifacts
          path: dist/
          if-no-files-found: error

  # Create a GitHub Release and attach all artifacts.
  # Only runs on tag pushes, workflow_dispatch builds stop at collect-artifacts,
  # presumed to be used for testing CI or related.
  create-github-release:
    name: "Create GitHub Release"
    needs: [collect-artifacts]
    runs-on: ubuntu-24.04
    if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags/v')
    permissions:
      contents: write  # Required to create releases and upload assets.

    steps:
      - uses: actions/checkout@v6

      - name: Download release artifacts
        uses: actions/download-artifact@v4
        with:
          name: release-artifacts
          path: dist/

      - name: Create GitHub Release
        env:
          GH_TOKEN: ${{ github.token }}
        run: |
          TAG="${{ github.ref_name }}"
          gh release create "$TAG" dist/*.whl dist/*.tar.gz dist/checksums.txt \
            --title "$TAG" \
            --prerelease \
            --generate-notes \
            --notes-start-tag "$(git describe --tags --abbrev=0 HEAD^ 2>/dev/null || echo '')"