anchor.diff:          '';
         };
   
  +      collectors = mkOption {
  +        type = types.attrs;
  +        default = {};
  +        example = literalExample "{ 0 = [ \"\${postgresStats}/bin/collect-stats\" ]; }";
  +        description = ''
  +          An attribute set mapping the frequency of collection to a list of
  +          binaries that should be executed at that frequency. You can use "0"
  +          to run a binary forever.
  +        '';
  +      };
  +
       };
   
     };
  
positive.code:         User = cfg.user;
          Group = cfg.group;
          ExecStart = ''
            ${cfg.package}/bin/scollector -h=${cfg.bosunHost}
          '';
        };
      };
  
negative.code: 
  let
    cfg = config.services.scollector;
  
    collectors = pkgs.runCommand "collectors" {}
      ''
      mkdir -p $out
      ${lib.concatStringsSep
          "\n"
          (lib.mapAttrsToList
            (frequency: binaries:
              "mkdir -p $out/${frequency}\n" +
              (lib.concatStringsSep
                "\n"
                (map (path: "ln -s ${path} $out/${frequency}/$(basename ${path})")
                     binaries)))
            cfg.collectors)}
      '';
  
  in {
  
  