anchor.diff:      boot.extraModulePackages =
         optional (cfg.videoDriver == "nvidia") kernelPackages.nvidia_x11 ++ 
         optional (cfg.videoDriver == "nvidiaLegacy") kernelPackages.nvidia_x11_legacy ++
  -      optional (cfg.videoDriver == "vboxvideo") kernelPackages.virtualboxGuestAdditions;
  +      optional (cfg.videoDriver == "virtualbox") kernelPackages.virtualboxGuestAdditions;
   
       environment.etc = optionals cfg.exportConfiguration
         [ { source = "${configFile}";
  
positive.code:             Option "RandRRotation" "on"
            ''}
  
            ${if cfg.videoDriver != "vboxvideo" then
              let
                f = depth:
                  ''
  
negative.code:     openchrome = { modules = [ xorg.xf86videoopenchrome ]; };
      cirrus =     { modules = [ xorg.xf86videocirrus ]; };
      vmware =     { modules = [ xorg.xf86videovmware ]; };
      virtualbox = { modules = [ kernelPackages.virtualboxGuestAdditions ]; };
    };
  
    videoDriver = cfg.videoDriver;
  