{
  lib,
  config,
  ...
}: let
  cfg = config.roles.prometheus;
in {
  options.roles.prometheus = {
    exporters = lib.mkOption {
      type = lib.types.submodule {
        options = {
          openFirewall = lib.mkOption {
            type = lib.types.bool;
            default = false;
            description = "Wheter to open firewall ports for enabled exporters";
          };
          node.enable = lib.mkEnableOption "node exporter";
          systemd.enable = lib.mkEnableOption "systemd exporter";
        };
      };
      default = {};
    };
  };
}