anchor.diff:  
   {
     imports =
  -    [ 
  +    [
         ./hardware-configuration.nix
       ];
     boot.loader.systemd-boot.enable = true;
  
positive.code:   services.autorandr = {
      enable = true;
    };
    
  
    # Configure keymap in X11
    # services.xserver.layout = "us";
  
negative.code:     gcc
      gnumake
      libtool
      ghc
    ];
  
    virtualisation.docker.enable = true;
  
    nixpkgs.config.allowUnfree = true;
  