nix/.github/workflows/ci.yml

name: CI

on:
  pull_request:
    types: [opened, synchronize, reopened]
  push:
    branches:
      - master
  merge_group:
    types: [checks_requested]

permissions:
  contents: read 

env: 
  MSRV: 1.69.0

jobs:

  macos:
    runs-on: macos-13
    env: 
      TARGET: x86_64-apple-darwin
    steps:
      - name: checkout
        uses: actions/checkout@v4

      - name: setup Rust
        uses: dtolnay/rust-toolchain@master
        with: 
          toolchain: '${{ env.MSRV }}'
          components: clippy

      - name: build
        uses: ./.github/actions/build
        with:
          TARGET: '${{ env.TARGET }}'

      - name: test
        uses: ./.github/actions/test
        with:
          TARGET: '${{ env.TARGET }}'

      - name: before_cache_script
        run: rm -rf $CARGO_HOME/registry/index


  # Use cross for QEMU-based testing
  # cross needs to execute Docker, GitHub Action already has it installed
  cross:
    runs-on: ubuntu-20.04 
    needs: [rustfmt, minver, macos, linux_native_builds, rust_stable]
    strategy:
      fail-fast: false
      matrix:
        target: [
          arm-unknown-linux-gnueabi,
          armv7-unknown-linux-gnueabihf,
          i686-unknown-linux-gnu,
          i686-unknown-linux-musl,
          mips-unknown-linux-gnu,
          mips64-unknown-linux-gnuabi64,
          mips64el-unknown-linux-gnuabi64,
          mipsel-unknown-linux-gnu,
          powerpc64le-unknown-linux-gnu,
        ]

    steps:
      - name: checkout
        uses: actions/checkout@v4

      - name: setup Rust
        uses: dtolnay/rust-toolchain@master
        with: 
          toolchain: '${{ env.MSRV }}'
          components: clippy

      # cross relies on docker or podman, GitHub Acton already has it installed.
      - name: Set up cross
        uses: taiki-e/install-action@v2
        with:
          tool: cross@0.2.5

      - name: build
        uses: ./.github/actions/build
        with:
          TARGET: '${{ matrix.target }}'
          TOOL: cross
          RUSTFLAGS: --cfg qemu -D warnings

      - name: test
        uses: ./.github/actions/test
        with:
          TARGET: '${{ matrix.target }}'
          TOOL: cross
          RUSTFLAGS: --cfg qemu -D warnings

      - name: before_cache_script
        run: rm -rf $CARGO_HOME/registry/index



  # Tasks for Linux native builds
  # Only test x86_64 targets on GitHub Action, leave aarch64 one in Cirrus CI.
  linux_native_builds:
    runs-on: ubuntu-20.04
    strategy:
      fail-fast: false
      matrix:
        target: [
          x86_64-unknown-linux-gnu,
          x86_64-unknown-linux-musl,
        ]

    steps:
      - name: checkout
        uses: actions/checkout@v4

      - name: setup Rust
        uses: dtolnay/rust-toolchain@master
        with: 
          toolchain: '${{ env.MSRV }}'
          components: clippy

      - name: install targets
        run: rustup target add ${{ matrix.target }}

      - name: build
        uses: ./.github/actions/build
        with:
          TARGET: '${{ matrix.TARGET }}'

      - name: test
        uses: ./.github/actions/test
        with:
          TARGET: '${{ matrix.TARGET }}'

      - name: before_cache_script
        run: rm -rf $CARGO_HOME/registry/index

  rust_stable:
    runs-on: ubuntu-20.04
    env: 
      TARGET: x86_64-unknown-linux-gnu
    steps:
      - name: checkout
        uses: actions/checkout@v4

      - name: setup Rust
        uses: dtolnay/rust-toolchain@stable
        with: 
          components: clippy

      - name: build
        uses: ./.github/actions/build
        with:
          TARGET: '${{ env.TARGET }}'

      - name: test
        uses: ./.github/actions/test
        with:
          TARGET: '${{ env.TARGET }}'

      - name: before_cache_script
        run: rm -rf $CARGO_HOME/registry/index



  # Tasks for cross-compiling, but no testing
  cross_compiling:
    runs-on: ubuntu-20.04
    needs: [rustfmt, minver, macos, linux_native_builds, rust_stable]
    env:
      BUILD: check
    strategy:
      fail-fast: false
      matrix:
        include:
          # Cross claims to support Android, but when it tries to run Nix's tests it
          # reports undefined symbol references.
          - target: aarch64-linux-android
          - target: arm-linux-androideabi
          - target: armv7-linux-androideabi
          - target: i686-linux-android
          - target: x86_64-linux-android
          - target: arm-unknown-linux-musleabi
          - target: x86_64-unknown-fuchsia
          - target: x86_64-unknown-illumos
          # Cross claims to support running tests on iOS, but it actually doesn't.
          # https://github.com/rust-embedded/cross/issues/535
          - target: aarch64-apple-ios 
          # cargo hack tries to invoke the iphonesimulator SDK for iOS
            NOHACK: true
          # Cross claims to support Linux powerpc64, but it really doesn't.
          # https://github.com/rust-embedded/cross/issues/441
          - target: powerpc64-unknown-linux-gnu
          - target: s390x-unknown-linux-gnu
          - target: x86_64-unknown-linux-gnux32
          - target: x86_64-unknown-netbsd

    steps:
      - name: checkout
        uses: actions/checkout@v4

      - name: setup Rust
        uses: dtolnay/rust-toolchain@master
        with: 
          toolchain: '${{ env.MSRV }}'
          components: clippy

      - name: install targets
        run: rustup target add ${{ matrix.target }}

      - name: build
        uses: ./.github/actions/build
        with:
          TARGET: '${{ matrix.target }}'
          BUILD: '${{ env.BUILD }}'
          NOHACK: '${{ matrix.NOHACK  }}'

      - name: before_cache_script
        run: rm -rf $CARGO_HOME/registry/index
  

  redox:
    runs-on: ubuntu-20.04
    needs: [rustfmt, minver, macos, linux_native_builds, rust_stable]
    env: 
      TARGET: x86_64-unknown-redox
      CLIPPYFLAGS: -D warnings
      BUILD: check
    steps:
      - name: checkout
        uses: actions/checkout@v4

      - name: setup Rust
        # Redox's MSRV policy is unclear.  Until they define it, use nightly.
        uses: dtolnay/rust-toolchain@nightly
        with: 
          components: clippy
       
      - name: install targets
        run: rustup target add ${{ env.TARGET }}

      - name: build
        uses: ./.github/actions/build
        with:
          TARGET: '${{ env.TARGET }}'
          BUILD: '${{ env.BUILD }}'
          CLIPPYFLAGS: '${{ env.CLIPPYFLAGS }}'

      - name: before_cache_script
        run: rm -rf $CARGO_HOME/registry/index
  


  # Rust Tier 3 targets can't use Rustup
  tier3:
    runs-on: ubuntu-20.04
    env: 
      BUILD: check
      ZFLAGS: -Zbuild-std
      CLIPPYFLAGS: -D warnings
    strategy:
      fail-fast: false
      matrix:
        include:
          - target: x86_64-unknown-dragonfly
          - target: x86_64-unknown-openbsd
          # Temporarily disable armv7-unknown-linux-uclibceabihf
          # https://github.com/nix-rust/nix/issues/2200
          #- target: armv7-unknown-linux-uclibceabihf
          - target: x86_64-unknown-haiku
    steps:
      - name: checkout
        uses: actions/checkout@v4

      - name: setup Rust
        uses: dtolnay/rust-toolchain@nightly
        with: 
          components: clippy

      - name: install src
        run: rustup component add rust-src

      - name: build
        uses: ./.github/actions/build
        with:
          TARGET: '${{ matrix.target }}'
          BUILD: '${{ env.BUILD }}'
          ZFLAGS: '${{ env.ZFLAGS }}'
          CLIPPYFLAGS: '${{ env.CLIPPYFLAGS }}'

      - name: before_cache_script
        run: rm -rf $CARGO_HOME/registry/index


  # Test that we can build with the lowest version of all dependencies.
  # "cargo test" doesn't work because some of our dev-dependencies, like
  # rand, can't build with their own minimal dependencies.
  minver:
    runs-on: ubuntu-20.04
    env: 
      TARGET: x86_64-unknown-linux-gnu
    steps:
      - name: checkout
        uses: actions/checkout@v4

      - name: setup Rust
        uses: dtolnay/rust-toolchain@nightly

      - name: setup 
        run: cargo update -Zminimal-versions

      - name: check
        run: cargo check

      - name: before_cache_script
        run: rm -rf $CARGO_HOME/registry/index

  # Tasks that checks if the code is formatted right using `cargo fmt` tool
  rustfmt:
    runs-on: ubuntu-20.04
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Setup Rust
        uses: dtolnay/rust-toolchain@stable
        with:
          components: rustfmt

      - name: Check format
        run: cargo fmt --all -- --check **/*.rs

      - name: before_cache_script
        run: rm -rf $CARGO_HOME/registry/index