use upstream hyprland and greetd

system/global/system.nix

@@ -40,17 +40,16 @@
 
   i18n.defaultLocale = "en_GB.UTF-8";
 
-  # Configure graphical stuff
-  services.xserver = {
-    enable = true;
-    layout = "gb";
-    libinput.enable = true;
+  services.xserver.layout = "gb";
 
-    # the only display manager that works?
-    displayManager.gdm.enable = true;
-    displayManager.autoLogin = {
-      enable = true;
-      user = "tristan";
+  services.greetd = {
+    enable = true;
+    settings = rec {
+      initial_session = {
+        command = "Hyprland";
+        user = "tristan";
+      };
+      default_session = initial_session;
     };
   };
 
@@ -78,7 +77,7 @@
   };
   
   environment.shellAliases = {
-    code = "codium --ozone-platform=wayland";
+    code = "codium";
   };
 
   environment.systemPackages = with pkgs; [