anchor.diff:  {
     name = "signal-desktop";
     meta = with pkgs.lib.maintainers; {
  -    maintainers = [ flokli ];
  +    maintainers = [ flokli primeos ];
     };
   
     machine = { ... }:
  
positive.code:     machine.wait_for_text("Signal")
      machine.wait_for_text("File Edit View Window Help")
      machine.screenshot("signal_desktop")
    '';
  })
  
negative.code: 
      services.xserver.enable = true;
      test-support.displayManager.auto.user = "alice";
      environment.systemPackages = with pkgs; [ signal-desktop file ];
      virtualisation.memorySize = 1024;
    };
  
  