{
  lib,
  config,
  pkgs,
  pkgs-kabbone,
  ...
}:
let
  cfg = config.services.corosync-qnetd;
  dataDir = "/var/run/corosync-qnetd";
in
{
  # interface
  options.services.corosync-qnetd = {
    enable = lib.mkEnableOption "corosync-qnetd";
    package = lib.mkPackageOption pkgs-kabbone "corosync-qdevice" { };

    extraOptions = lib.mkOption {
      type = with lib.types; listOf str;
      default = [ ];
      description = "Additional options with which to start corosync-qnetd.";
    };
  };

  # implementation

  # implementation
  config = lib.mkIf cfg.enable {
    environment.systemPackages = [ cfg.package ];

    users.users.coroqnetd = {
      isSystemUser = true;
      group = "coroqnetd";
      home = dataDir;
      description = "Corosync-qnetd Service User";
    };

    users.groups.coroqnetd = { };

   # environment.etc."corosync/corosync-qnetd.conf".text = ''
   #   totem {
   #     version: 2
   #     secauth: on
   #     cluster_name: ${cfg.clusterName}
   #     transport: knet
   #   }


   #   logging {
   #     to_syslog: yes
   #   }
   # '';

    systemd.packages = [ cfg.package ];
    systemd.services.corosync-qnetd = {
      serviceConfig = {
        User = "coroqnetd";
        StateDirectory = "corosync-qnetd";
        StateDirectoryMode = "0700";
      };
    };

    environment.etc."sysconfig/corosync-qnetd".text = lib.optionalString (cfg.extraOptions != [ ]) ''
      COROSYNC-QNETD_OPTIONS="${lib.escapeShellArgs cfg.extraOptions}"
    '';
  };

  meta = {
    #buildDocsInSandbox = false;
    #doc = ./mautrix-whatsapp.md;
    maintainers = with lib.maintainers; [
      kabbone
    ];
  };
}