depot/third_party/nixpkgs/nixos/tests/seatd.nix

import ./make-test-python.nix (
  { pkgs, lib, ... }:

  let
    seatd-test = pkgs.writeShellApplication {
      name = "seatd-client-pid";
      text = ''
        journalctl -u seatd --no-pager -b | while read -r line; do
            case "$line" in
            *"New client connected"*)
                line="''${line##*pid: }"
                pid="''${line%%,*}"
                ;;
            *"Opened client"*)
                echo "$pid"
                exit
            esac
        done;
      '';
    };
  in
  {
    name = "seatd";
    meta.maintainers = with lib.maintainers; [ sinanmohd ];

    nodes.machine =
      { ... }:
      {
        imports = [ ./common/user-account.nix ];
        services.getty.autologinUser = "alice";
        users.users.alice.extraGroups = [
          "seat"
          "wheel"
        ];

        fonts.enableDefaultPackages = true;
        environment.systemPackages = with pkgs; [
          dwl
          foot
          seatd-test
        ];

        programs.bash.loginShellInit = ''
          [ "$(tty)" = "/dev/tty1" ] &&
              dwl -s 'foot touch /tmp/foot_started'
        '';

        hardware.graphics.enable = true;
        virtualisation.qemu.options = [ "-vga none -device virtio-gpu-pci" ];
        services.seatd.enable = true;
      };

    testScript = ''
      machine.wait_for_file("/tmp/foot_started")
      machine.succeed("test $(seatd-client-pid) = $(pgrep dwl)")
    '';
  }
)