anchor.diff:              "''${modulesPath}/testing/test-instrumentation.nix"
             ];
   
  -        boot.loader.grub.version = 2;
  +        boot.loader.grub.version = ${toString grubVersion};
  +        ${optionalString (grubVersion == 1) ''
  +          boot.loader.grub.splashImage = null;
  +        ''}
           boot.loader.grub.device = "/dev/vda";
           boot.loader.grub.extraConfig = "serial; terminal_output.serial";
           boot.initrd.kernelModules = [ "ext3" "virtio_console" ];
  
positive.code:     '';
  
  
    makeTest = { createPartitions, fileSystems, testChannel ? false }:
      { inherit iso;
        nodes = if testChannel then { inherit webserver; } else { };
        testScript = testScriptFun {
          inherit createPartitions fileSystems testChannel;
        };
      };
  
  
negative.code:               [ pkgs.glibcLocales
                  pkgs.sudo
                  pkgs.docbook5
                  pkgs.grub
                ];
            }
          ];
  