name: build and cache machines and homes
on:
  workflow_dispatch:
  push:
  pull_request:
jobs:
  build-machines:
    strategy:
      matrix:
        machine:
          - chunk
          - ytnix
          - titan
        os:
          - ubuntu-latest
    runs-on: ${{ matrix.os }}
    continue-on-error: true
    steps:
      - name: Maximize build disk space
        uses: easimon/maximize-build-space@v10
        with:
          overprovision-lvm: true
          swap-size-mb: 1024
          remove-dotnet: 'true'
          remove-android: 'true'
          remove-haskell: 'true'
          remove-codeql: 'true'
          remove-docker-images: 'true'
          build-mount-path: /nix
      - name: Install Nix
        uses: cachix/install-nix-action@v30
        with:
          install_url: https://releases.nixos.org/nix/nix-2.25.4/install
          extra_nix_config: 'accept-flake-config = true'
      - name: Sync repository
        uses: actions/checkout@v4
        with:
          persist-credentials: false
      - uses: cachix/cachix-action@v14
        with:
          name: cything
          authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
          useDaemon: false
          installCommand: nix profile install nixpkgs#cachix
      - name: Setup Attic cache
        uses: ryanccn/attic-action@v0
        with:
          endpoint: ${{ vars.ATTIC_ENDPOINT }}
          cache: ${{ vars.ATTIC_CACHE }}
          token: ${{ secrets.ATTIC_TOKEN }}
      - name: Restore and cache Nix store
        uses: nix-community/cache-nix-action@v5.1.0
        with:
          # restore and save a cache using this key
          primary-key: nix-${{ runner.os }}-${{ matrix.machine }}-${{ hashFiles('**/*.nix', 'flake.lock') }}
          # if there's no cache hit, restore a cache by this prefix
          restore-prefixes-first-match: nix-${{ runner.os }}-${{ matrix.machine }}-
          # do purge caches
          purge: true
          # purge all versions of the cache
          purge-prefixes: nix-${{ runner.os }}-
          # created more than this number of seconds ago relative to the start of the `Post Restore` phase
          purge-last-accessed: 86400
          # except the version with the `primary-key`, if it exists
          purge-primary-key: never
          # always save the cache
          save-always: true
      - run: nix build -L .#nixosConfigurations.${{ matrix.machine }}.config.system.build.toplevel
  build-homes:
    strategy:
      matrix:
        home:
          - yt@ytnix
          - yt@chunk
        os:
          - ubuntu-latest
          # - macos-latest
    runs-on: ${{ matrix.os }}
    continue-on-error: true
    steps:
      - name: Maximize build disk space
        uses: easimon/maximize-build-space@v10
        with:
          overprovision-lvm: true
          swap-size-mb: 1024
          remove-dotnet: 'true'
          remove-android: 'true'
          remove-haskell: 'true'
          remove-codeql: 'true'
          remove-docker-images: 'true'
          build-mount-path: /nix
      - uses: nixbuild/nix-quick-install-action@master
      - name: Sync repository
        uses: actions/checkout@v4
        with:
          persist-credentials: false
      - uses: cachix/cachix-action@v14
        with:
          name: cything
          authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
          useDaemon: false
          installCommand: nix profile install nixpkgs#cachix
      - name: Setup Attic cache
        uses: ryanccn/attic-action@v0
        with:
          endpoint: ${{ vars.ATTIC_ENDPOINT }}
          cache: ${{ vars.ATTIC_CACHE }}
          token: ${{ secrets.ATTIC_TOKEN }}
      - name: Restore and cache Nix store
        uses: nix-community/cache-nix-action@v5.1.0
        with:
          # restore and save a cache using this key
          primary-key: nix-${{ runner.os }}-${{ matrix.home }}-${{ hashFiles('**/*.nix', 'flake.lock') }}
          # if there's no cache hit, restore a cache by this prefix
          restore-prefixes-first-match: nix-${{ runner.os }}-${{ matrix.home }}-
          # do purge caches
          purge: true
          # purge all versions of the cache
          purge-prefixes: nix-${{ runner.os }}-
          # created more than this number of seconds ago relative to the start of the `Post Restore` phase
          purge-last-accessed: 86400
          # except the version with the `primary-key`, if it exists
          purge-primary-key: never
          # always save the cache
          save-always: true
      - run: nix build -L .#homeConfigurations."${{ matrix.home }}".activationPackage