anchor.diff:        };
   
         test-driver = {
  +        hostName = mkOption {
  +          type = types.str;
  +          default = "driver";
  +        };
  +
           script = mkOption {
             type = types.path;
             description = ''
  
positive.code:         ${concatStrings (mapAttrsToList (n: i: ''
            ln -sv "${i.libvirt.xmlFile}" "$out/dom-${n}.xml"
          '') cfg.instances)}
          ln -sv  "${libvirtNetwork}" "$out/net-test.xml"
        '';
  
        phases = [ "buildPhase" "installPhase" "fixupPhase" ];
  
negative.code: let
  
    cfg = config.libvirt.test;
  
    ztail = pkgs.haskell.packages.ghc784.callPackage (
      { mkDerivation, array, base, containers, filepath, hinotify
      , old-locale, process, regex-compat, stdenv, time, unix
      }:
      mkDerivation {
        pname = "ztail";
        version = "1.1";
        sha256 = "11x6whwyfgdgda5bhdck0k12inzix8cjfm42hh09p703nalk07nq";
        isLibrary = false;
        isExecutable = true;
        executableHaskellDepends = [
          array base containers filepath hinotify old-locale process
          regex-compat time unix
        ];
        description = "Multi-file, colored, filtered log tailer";
        license = stdenv.lib.licenses.bsd3;
      }
    ) {};
  
    inherit (import ../lib.nix) hexByteToInt mkMAC;
  
  