checks.yml

name: Checks

on:
  push:
    branches: ["*"]
  pull_request:
    branches: ["main"]
  merge_group:
  workflow_run:
    workflows: ["Update rust-overlay"]
    types:
      - completed

concurrency:
  group: ${{ github.ref }}
  cancel-in-progress: ${{ github.ref != 'refs/heads/main' }}

permissions:
  contents: read

jobs:
  check:
    runs-on: ubuntu-latest
    env:
      TARGET_BRANCH: ${{ github.ref }}

    strategy:
      matrix:
        rust:
          - base
          - stable
          - beta
          - nightly

    steps:
      - name: Switch to rust-overlay branch if triggered by update
        if: ${{ github.event_name == 'workflow_run' }}
        run: echo "TARGET_BRANCH=rust-overlay" >> $GITHUB_ENV

      - uses: actions/checkout@v4
        with:
          ref: ${{ env.TARGET_BRANCH }}

      - uses: cachix/install-nix-action@v27
        with:
          nix_path: nixpkgs=channel:nixos-unstable

      - uses:  DeterminateSystems/magic-nix-cache-action@v6

      - name: Run checks
        run: nix build .#checks.x86_64-linux.${{ matrix.rust }}