anchor.diff:          example = literalExample ''
             {
               GRAPHITE_USERNAME = "user";
  -            GRAPHITE_PASSWORD = "pass"; 
  +            GRAPHITE_PASSWORD = "pass";
             }
           '';
         };
  
positive.code:         serviceConfig = {
            ExecStart = "${pkgs.pythonPackages.graphite_pager}/bin/graphite-pager --config ${pagerConfig}";
            User = "graphite";
            Group = "graphite"; 
          };
        };
  
  
negative.code:       environment.systemPackages = [ pkgs.python27Packages.graphite_web ];
      })
  
      (mkIf cfg.api.enable {
        systemd.services.graphiteApi = {
          description = "Graphite Api Interface";
          wantedBy = [ "multi-user.target" ];
  