change nvidia driver to open-dkms ans put it in a module

configuration.nix

@@ -8,6 +8,7 @@
 
       ./modules/nix/pipewire.nix
       ./modules/nix/locales.nix
+      ./modules/nix/nvidia.nix
     ];
 
   home-manager = {
@@ -66,17 +67,14 @@
   xdg.portal.enable = true;
   xdg.portal.extraPortals = [ pkgs.xdg-desktop-portal-gtk ];
 
-  hardware = {
-    graphics.enable = true;
-    nvidia.modesetting.enable = true;
-  };
-
   nixpkgs.config.allowUnfreePredicate = pkg: builtins.elem (lib.getName pkg) [
     "steam"
     "steam-original"
     "steam-unwrapped"
     "steam-run"
     "obsidian"
+    "nvidia-x11"
+    "nvidia-settings"
   ];
 
   programs.steam.enable = true;

modules/nix/nvidia.nix

@@ -0,0 +1,10 @@
+{ config, lib, pkgs, ... }:
+{
+  services.xserver.videoDrivers = [ "nvidia" ];
+  hardware.nvidia = {
+    modesetting.enable = true;
+    open = true;
+    nvidiaSettings = true;
+    package = config.boot.kernelPackages.nvidiaPackages.stable;
+  };
+}