anchor.diff:    };
   
     services = {
  -    gnome3.chrome-gnome-shell.enable = true;
       physlock.enable = true;
       fwupd.enable = true;
   
  
positive.code:       /etc/nixos/hardware-configuration.nix
      ];
  
    nixpkgs.config = {
      allowUnfree = true;
      packageOverrides = pkgs: {
        vaapiIntel = pkgs.vaapiIntel.override { enableHybridCodec = true; };
        unstable = import unstableTarball {
          config = config.nixpkgs.config;
        };
      };
  
negative.code:       };
      };
    };
  
    security.pam.services.lightdm.enableGnomeKeyring = true;
  
    time.timeZone = "Europe/London";
  
  