nixos/elephant: init service

- [dsearch](https://github.com/AvengeMedia/danksearch), a fast filesystem search service with fuzzy matching. Available as [programs.dsearch](#opt-programs.dsearch.enable).

- [Elephant](https://github.com/abenz1267/elephant), a data provider service and backend for building custom application launchers. Available as [services.elephant](#opt-services.elephant.enable).

- [Dunst](https://github.com/dunst-project/dunst), a lightweight and customizable notification daemon. Available as [services.dunst](#opt-services.dunst.enable).

- [Ente Auth](https://ente.io/auth/), an open source 2FA authenticator, with end-to-end encrypted backups. Available as [programs.ente-auth](#opt-programs.ente-auth.enable).

  ./services/misc/dump1090-fa.nix

  ./services/misc/dwm-status.nix

  ./services/misc/dysnomia.nix

  ./services/misc/elephant.nix

  ./services/misc/errbot.nix

  ./services/misc/ersatztv.nix

  ./services/misc/etebase-server.nix

{

  config,

  lib,

  pkgs,

  ...

}:

let

  cfg = config.services.elephant;

in

{

  options.services.elephant = {

    enable = lib.mkEnableOption "Elephant application launcher backend";

    package = lib.mkPackageOption pkgs "elephant" { };

  };

  config = lib.mkIf cfg.enable {

    systemd.user.services.elephant = {

      description = "Elephant application launcher backend";

      wantedBy = [ "graphical-session.target" ];

      partOf = [ "graphical-session.target" ];

      after = [ "graphical-session.target" ];

      serviceConfig = {

        Restart = "always";

        RestartSec = 10;

        ExecStart = "${cfg.package}/bin/elephant";

      };

    };

    environment.systemPackages = [ cfg.package ];

  };

  meta.maintainers = with lib.maintainers; [

    saadndm

  ];

}