add greetd

modules/desktop/greetd/default.nix

@@ -0,0 +1,25 @@
+{
+  pkgs,
+  lib,
+  config,
+  ...
+}: {
+
+  services.greetd = {
+    enable = true;
+
+    # tuigreet command to run
+    settings = {
+      default_session = {
+        user = "greeter";
+        command = "${pkgs.greetd.tuigreet}/bin/tuigreet -c Hyprland -t -r --user-menu --remember-user-session --power-shutdown \"systemctl poweroff\" --power-reboot \"systemctl reboot\"";
+      };
+    };
+  };
+
+  # ensure the user exists
+  users.users.greeter = {
+    isSystemUser = true;
+    description = "user for greetd";
+  };
+}