anchor.diff:    # Enable the X11 windowing system.
     services.xserver.enable = true;
     services.xserver.layout = "us";
  -  services.xserver.xkbOptions = "ctrl:nocaps"; 
  +  services.xserver.xkbOptions = "ctrl:nocaps";
   
     # Enable touchpad support.
     # services.xserver.libinput.enable = true;
  
positive.code:     zathura
      zotero
    ];
    
    nixpkgs.config = {
      allowUnfree = true;
    }; 
   
    # Some programs need SUID wrappers, can be configured further or are
    # started in user sessions.
    programs.bash.enableCompletion = true;
  
negative.code:     ];
  
    boot.kernelModules = [ "tp_smapi" ];
    boot.extraModulePackages = [ config.boot.kernelPackages.tp_smapi ];
  
    # handle lid close hibernate, suspend, or ignore
    systemd.extraConfig = "";
  