ci.yml

name: "Continuous Integration"

on:
  workflow_dispatch: # allows manual triggering
  push:

jobs:
  eval:
    runs-on: ubuntu-latest
    outputs:
      matrix: ${{ steps.eval-jobs.outputs.matrix }}
    steps:
    - uses: actions/checkout@v4
    - uses: cachix/install-nix-action@v25
    - name: Evaluate checks
      id: eval-jobs
      run: |
        MATRIX=$(nix eval \
          --accept-flake-config \
          --json \
          .#checks.x86_64-linux --apply builtins.attrNames \
        )
        echo "matrix=$MATRIX" >> $GITHUB_OUTPUT

  build:
    name: ${{ matrix.check }}
    needs: eval
    strategy:
      fail-fast: false
      matrix:
        check: ${{ fromJson(needs.eval.outputs.matrix) }}
        exclude:
          # Cannot cross-build on Github CI
          - check: qemu-tcg-9pstore-overlay-shutdown-command
          - check: qemu-tcg-9pstore-overlay-startup-shutdown
          - check: qemu-tcg-9pstore-overlay-systemd-shutdown-command
          - check: qemu-tcg-9pstore-overlay-systemd-startup-shutdown
          - check: qemu-tcg-9pstore-shutdown-command
          - check: qemu-tcg-9pstore-startup-shutdown
          - check: qemu-tcg-9pstore-systemd-shutdown-command
          - check: qemu-tcg-9pstore-systemd-startup-shutdown
          - check: qemu-tcg-overlay-shutdown-command
          - check: qemu-tcg-overlay-startup-shutdown
          - check: qemu-tcg-overlay-systemd-shutdown-command
          - check: qemu-tcg-overlay-systemd-startup-shutdown
          - check: qemu-tcg-shutdown-command
          - check: qemu-tcg-startup-shutdown
          - check: qemu-tcg-systemd-shutdown-command
          - check: qemu-tcg-systemd-startup-shutdown
          # Known broken
          - check: cloud-hypervisor-overlay-startup-shutdown
          - check: cloud-hypervisor-overlay-shutdown-command
          - check: cloud-hypervisor-overlay-systemd-startup-shutdown
          - check: cloud-hypervisor-overlay-systemd-shutdown-command
          - check: firecracker-overlay-shutdown-command
          - check: firecracker-overlay-startup-shutdown
          - check: firecracker-overlay-overlay-startup-shutdown
          - check: vm-firecracker
          - check: vm-firecracker-iperf
          # Not finishing
          - check: firecracker-overlay-systemd-startup-shutdown
          - check: qemu-overlay-startup-shutdown
          - check: qemu-overlay-systemd-startup-shutdown
    runs-on: ubuntu-latest
    env:
      NIX_ATTR: 'checks.x86_64-linux.${{ matrix.check }}'
    steps:
      - name: Enable KVM group perms
        run: |
          echo 'KERNEL=="kvm", GROUP="kvm", MODE="0666", OPTIONS+="static_node=kvm"' | sudo tee /etc/udev/rules.d/99-kvm4all.rules
          sudo udevadm control --reload-rules
          sudo udevadm trigger --name-match=kvm
      - uses: actions/checkout@v4
      - uses: cachix/install-nix-action@v25
      - uses: DeterminateSystems/magic-nix-cache-action@v3
      - name: Build ${{ matrix.check }}
        run: |
          nix build \
            -L \
            --accept-flake-config \
            ".#$NIX_ATTR"
          if [ -e result/summary.md ]; then
            cat result/summary.md >> $GITHUB_STEP_SUMMARY
          fi