anchor.diff:      };
       
       boot.initrd.kernelModules = mkOption {
  -      default = [
  -      ];
  +      default = [];
         description = "List of modules that are always loaded by the initrd.";
       };
   
  
positive.code:     system.modulesTree = [ kernel ] ++ config.boot.extraModulePackages;
  
      boot.kernelParams =
        [ "splash=verbose" ] ++ 
        optional config.boot.vesa "vga=0x317";
        
      boot.kernelModules = [ "loop" ];
  
negative.code:     boot.initrd.kernelModules =
        [ # For LVM.
          "dm_mod"
          
          # For usual AT keyboards.
          "i8042"        
        ];
  
      # The Linux kernel >= 2.6.27 provides firmware.
  