name: Build and populate cache

on:
  workflow_dispatch:
  workflow_call:
    inputs:
      ref:
        required: false
        type: string

permissions:
  contents: read

jobs:
  build:
    name: Build (${{ matrix.system }})
    runs-on: ${{ matrix.os }}

    strategy:
      fail-fast: false
      matrix:
        include:
          - os: ubuntu-latest
            system: x86_64-linux
          - os: macos-latest
            system: aarch64-darwin
          - os: ubuntu-24.04-arm
            system: aarch64-linux

    steps:
      - name: Checkout
        uses: actions/checkout@v5
        with:
          persist-credentials: false
          ref: ${{ inputs.ref && inputs.ref || github.ref_name }}

      - name: Install Nix
        uses: DeterminateSystems/nix-installer-action@main

      - name: Build
        run: nix build -L