What a clusterfuck

modules/system/devices/video/default.nix

@@ -0,0 +1,12 @@
+{ pkgs, ... }:
+{
+  hardware.opengl = {
+    enable = true;
+    driSupport32Bit = true;
+    extraPackages = with pkgs; [
+      vulkan-loader
+      vulkan-validation-layers
+      vulkan-extension-layer
+    ];
+  };
+}

modules/system/devices/video/nouveau/default.nix

@@ -0,0 +1,4 @@
+{ config, lib, ... }:
+{
+  services.xserver.videoDrivers = [ "nouveau" ];
+}

modules/system/devices/video/nvidia/default.nix

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