name: Build NixOS (on demand)

on:
  workflow_dispatch:
    inputs:
      hosts:
        description: "list of hosts to build"
        required: true
        type: string
        default: "othalan,algiz"
      lockFile:
        description: "flake.lock file"
        type: string
      extraArgs:
        description: "postional args forwared to nix"
        type: string
        default: "--keep-going"

  workflow_call:
    inputs:
      hosts:
        description: "list of hosts to build"
        default: ",othalan,algiz"
        type: string

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}-${{ inputs.host }}
  cancel-in-progress: true

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - uses: ./.github/actions/nix
        with:
          attic_token: ${{ secrets.ATTIC_TOKEN }}
          # clean: true
          btrfs: true

      - name: write lock file
        if: "${{ inputs.lockFile != '' }}"
        run: |
          echo '${{ inputs.lockFile }}' > flake.lock
          git diff

      - name: Pre-build Oizys
        run: nix build . --print-build-logs

      - name: Build
        run: >
          nix run .
          --
          cache
          --host,="${{ inputs.hosts }}"
          --flake .
          -vv
          --
          ${{ inputs.extraArgs }}