1 files changed, 47 insertions, 0 deletions
diff --git a/modules/nixos/traits/nvidia.nix b/modules/nixos/traits/nvidia.nix
new file mode 100644
index 0000000..b66fa80
--- /dev/null
+++ b/modules/nixos/traits/nvidia.nix
@@ -0,0 +1,47 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}: let
+  cfg = config.traits.nvidia;
+  usingNvidia = lib.elem "nvidia" config.services.xserver.videoDrivers;
+in {
+  options.traits.nvidia = {
+    enable = lib.mkEnableOption "NVIDIA drivers";
+    nvk.enable = lib.mkEnableOption "NVK specialisation";
+  };
+
+  config = lib.mkIf cfg.enable (lib.mkMerge [
+    {
+      boot.kernelParams = lib.optional usingNvidia "nvidia_drm.fbdev=1";
+
+      services.xserver.videoDrivers = ["nvidia"];
+
+      hardware = {
+        opengl.extraPackages = [pkgs.vaapiVdpau];
+        nvidia = {
+          package = lib.mkDefault config.boot.kernelPackages.nvidiaPackages.latest;
+          modesetting.enable = true;
+        };
+      };
+    }
+
+    (lib.mkIf cfg.nvk.enable {
+      specialisation = {
+        nvk.configuration = {
+          boot = {
+            kernelParams = ["nouveau.config=NvGspRm=1"];
+            initrd.kernelModules = ["nouveau"];
+          };
+
+          hardware.opengl.extraPackages = lib.mkForce [];
+
+          services.xserver.videoDrivers = lib.mkForce ["modesetting"];
+
+          system.nixos.tags = ["with-nvk"];
+        };
+      };
+    })
+  ]);
+}