anchor.diff:        enable = mkEnableOption "XtreemFS";
   
         homeDir = mkOption {
  +        type = types.path;
           default = "/var/lib/xtreemfs";
           description = ''
             XtreemFS home dir for the xtreemfs user.
  
positive.code:         };
          httpPort = mkOption {
            default = 30638;
            description = ''
              Specifies the listen port for the HTTP service that returns the
              status page.
            '';
          };
          syncMode = mkOption {
            default = "FSYNC";
            example = "FDATASYNC";
            description = ''
  
negative.code:         };
          httpPort = mkOption {
            default = 30636;
            type = types.port;
            description = ''
              Specifies the listen port for the HTTP service that returns the
              status page.
  