anchor.diff:          enable = mkEnableOption "the Synergy server (send keyboard and mouse events)";
   
           configFile = mkOption {
  +          type = types.path;
             default = "/etc/synergy-server.conf";
             description = "The Synergy server configuration file.";
           };
           screenName = mkOption {
  +          type = types.str;
             default = "";
             description = ''
               Use the given name instead of the hostname to identify
  
positive.code: 
          screenName = mkOption {
            default = "";
            description = ''
              Use the given name instead of the hostname to identify
              ourselves to the server.
            '';
          };
          serverAddress = mkOption {
            description = ''
              The server address is of the form: [hostname][:port].  The
              hostname must be the address or hostname of the server.  The
  
negative.code:           '';
          };
          address = mkOption {
            type = types.str;
            default = "";
            description = "Address on which to listen for clients.";
          };
  