steamdeck cosmic?

systems/x86_64-linux/steamdeck/boot.nix

@@ -8,22 +8,22 @@ in
     consoleLogLevel = 0;
     initrd.verbose = false;
     kernelModules = [ "nct6775" ];
-    loader = {
-      systemd-boot = {
-        enable = false;
-        configurationLimit = 5;
-        extraInstallCommands = ''
-          ${lib.getExe' pkgs.uutils-coreutils "uutils-echo"} "timeout 0
-          console-mode 1
-          default nixos-*" > /boot/loader/loader.conf
-        '';
-      };
+    # loader = {
+    #   systemd-boot = {
+    #     enable = false;
+    #     configurationLimit = 5;
+    #     extraInstallCommands = ''
+    #       ${lib.getExe' pkgs.uutils-coreutils "uutils-echo"} "timeout 0
+    #       console-mode 1
+    #       default nixos-*" > /boot/loader/loader.conf
+    #     '';
+    #   };
 
-      efi = {
-        canTouchEfiVariables = true;
-        efiSysMountPoint = "/boot";
-      };
-    };
+    #   efi = {
+    #     canTouchEfiVariables = true;
+    #     efiSysMountPoint = "/boot";
+    #   };
+    # };
 
     lanzaboote = {
       settings = {

systems/x86_64-linux/steamdeck/default.nix

@@ -12,8 +12,9 @@
   ${namespace} = {
     hardware.disko.enable = true;
     impermanence.enable = true;
-    bootloader.lanzaboote.enable = true;
-    desktop.gnome.enable = true;
+    boot.systemd-boot.enable = true;
+    bootloader.lanzaboote.enable = false;
+    desktop.cosmic.enable = true;
     user = {
       name = "deck";
     };

systems/x86_64-linux/steamdeck/jovian.nix

@@ -1,11 +1,13 @@
-{ ... }:
+{ config, lib, pkgs, ... }:
 {
+  services.greetd.settings.default_session.command = lib.mkForce ''${lib.getExe' pkgs.coreutils "env"} XCURSOR_THEME="''${XCURSOR_THEME:-Pop}" ${lib.getExe' config.services.displayManager.cosmic-greeter.package "cosmic-greeter-start"}'';
+  services.greetd.settings.default_session.user = lib.mkForce "cosmic-greeter";
   jovian = {
     steam = {
       enable = true;
       autoStart = true;
       user = "deck";
-      desktopSession = "gnome";
+      desktopSession = "cosmic";
     };
 
     steamos = {