anchor.diff:  
         listen = mkOption {
           type = types.listOf types.str;
  -        default = [ ];
  +        default = [ "0.0.0.0:564" ];
           description = ''
             [ "IP:PORT" [,"IP:PORT",...] ]
             List the interfaces and ports that diod should listen on.
  
positive.code:       wantedBy = [ "multi-user.target" ];
        after = [ "network.target" ];
        serviceConfig = {
          ExecStart = "${pkgs.diod}/sbin/diod -c ${diodConfig}";
        };
      };
    };
  
negative.code:       };
  
        exports = mkOption {
          type = types.listOf types.str;
          default = [];
          description = ''
            List the file systems that clients will be allowed to mount. All paths should
  