anchor.diff:  
   let
     cfg = config.services.fluentd;
  +
  +  pluginArgs = concatStringsSep " " (map (x: "-p ${x}") cfg.plugins);
   in {
     ###### interface
   
  
positive.code:         defaultText = "pkgs.fluentd";
          description = "The fluentd package to use.";
        };
      };
    };
  
  
negative.code:       description = "Fluentd Daemon";
        wantedBy = [ "multi-user.target" ];
        serviceConfig = {
          ExecStart = "${cfg.package}/bin/fluentd -c ${pkgs.writeText "fluentd.conf" cfg.config} ${pluginArgs}";
          ExecReload = "${pkgs.coreutils}/bin/kill -HUP $MAINPID";
        };
      };
  