add dig to nixos common packages

hosts/nixos/default.nix

@@ -26,6 +26,7 @@
     lf
     btop
     powertop
+    dig
   ];
 
   # set timezone

modules/desktop/greetd/default.nix

@@ -7,12 +7,11 @@
 
   services.greetd = {
     enable = true;
-    vt = "2";
     # tuigreet command to run
     settings = {
       default_session = {
         user = "greeter";
-        command = "${pkgs.tuigreet}/bin/tuigreet -c Hyprland -t -r --user-menu --remember-user-session --power-shutdown \"systemctl poweroff\" --power-reboot \"systemctl reboot\"";
+        command = "${pkgs.tuigreet}/bin/tuigreet -c Hyprland -t --greeting \"howdy o/\" --user-menu --remember --remember-user-session --power-shutdown \"systemctl poweroff\" --power-reboot \"systemctl reboot\"";
       };
     };
   };