anchor.diff:    dispScriptUrlPath = "";
     dispViewPath      = "";
   
  -  twikiName = "Program Transformation Wiki";
     startWeb = config.startWeb;
  -  registrationDomain = "ewi.tudelft.nl";
     defaultUrlHost = "";
   
     # Build the TWiki CGI and configuration files.
     twikiRoot = (import /etc/nixos/services/twiki/twiki-instance.nix).twiki {
  -    name = "pt-wiki";
  +    name = "wiki-instance";
       pubdir = pubDir;
       datadir = dataDir;
  -    inherit twikiName scriptUrlPath pubUrlPath absHostPath
  -      dispPubUrlPath dispScriptUrlPath dispViewPath
  -      registrationDomain defaultUrlHost;
  +    inherit scriptUrlPath pubUrlPath absHostPath
  +      dispPubUrlPath dispScriptUrlPath dispViewPath defaultUrlHost;
  +    twikiName = config.twikiName;
  +    registrationDomain = config.registrationDomain;
     };
   
     plugins = import /etc/nixos/services/twiki/server-pkgs/twiki-plugins.nix;
  
positive.code:     Disallow: /pt/bin/
    '';
  
  }
negative.code: let
  
    inherit (pkgs.lib) mkOption;
  
    dataDir = config.dataDir; # "/data/pt-wiki/data";
    pubDir = config.pubDir; # "/data/pt-wiki/pub";
  
    scriptUrlPath = "/bin";
    pubUrlPath    = "/pub";
  