nichts/modules/services/greetd/module.nix

{
  config,
  lib,
  pkgs,
  ...
}: let
  inherit (lib.meta) getExe getExe';
  inherit (lib.modules) mkIf;
  inherit (lib.options) mkOption mkEnableOption;
  inherit (lib.types) str listOf;

  inherit (config.meta.mainUser) username;
  cfg = config.modules.services.greetd;
  uwsmEnabled = config.modules.services.uwsm.enable;
in {
  options.modules.services.greetd = {
    enable = mkEnableOption "greetd";
    greeter = mkOption {
      description = "greetd frontend to use";
      type = str;
    };
    launchOptions = mkOption {
      description = "/etc/greetd/environments as list of strings";
      type = listOf str;
    };
    session = mkOption {
      description = "Which login session to start";
      type = str;
      default =
        if uwsmEnabled
        then "${getExe config.programs.uwsm.package} start Hyprland"
        else "Hyprland";
    };
  };

  config = mkIf cfg.enable {
    services.greetd = let
      session = {
        # command = ''
        # ${pkgs.greetd.tuigreet}/bin/tuigreet \
        #   -c \"${cfg.session}\" \
        #   -r
        #   -t --time-format "DD.MM.YYYY"
        #   --asteriks'';

        command = "${getExe config.programs.uwsm.package} start hyprland-uwsm.desktop";
        user = username;
      };
    in {
      enable = true;
      package = pkgs.greetd;
      vt = 7;
      settings = {
        default_session = session;
        initial_session = session;
      };
    };
  };
}