anchor.diff:        };
   
         storageSchemas = mkOption {
  -        description = "Defines retention rates for storing metrics";
  +        description = "Defines retention rates for storing metrics.";
           default = "";
           type = types.uniq (types.nullOr types.string);
           example = ''
  
positive.code:       };
  
        enableCache = mkOption {
          description = "Whether to enable carbon cache, the graphite storage daemon";
          default = false;
          type = types.uniq types.bool;
        };
  
        storageAggregation = mkOption {
          description = "Defines how to aggregate data to lower-precision retentions";
          default = null;
          type = types.uniq (types.nullOr types.string);
          example = ''
  
negative.code: 
      web = {
        enable = mkOption {
          description = "Whether to enable graphite web frontend.";
          default = false;
          type = types.uniq types.bool;
        };
  
        host = mkOption {
          description = "Graphite web frontend listen address.";
          default = "127.0.0.1";
          type = types.str;
        };
  
        port = mkOption {
          description = "Graphite web frontend port.";
          default = 8080;
          type = types.int;
        };
  