From 973a31859d75de905bcdec43e3b1a51f0746d3c2 Mon Sep 17 00:00:00 2001
From: NullBite <me@nullbite.com>
Date: Thu, 28 Dec 2023 01:03:46 -0500
Subject: [PATCH] convert nvidia-optimus.nix to specialisation

---
 hosts/slab/nvidia-optimus.nix | 61 ++++++++++++++++-------------------
 1 file changed, 28 insertions(+), 33 deletions(-)

diff --git a/hosts/slab/nvidia-optimus.nix b/hosts/slab/nvidia-optimus.nix
index 3b74772..52aa6b5 100644
--- a/hosts/slab/nvidia-optimus.nix
+++ b/hosts/slab/nvidia-optimus.nix
@@ -3,44 +3,39 @@
 {
   services.supergfxd.enable = true;
 
-  # Load nvidia driver for Xorg and Wayland
-  services.xserver.videoDrivers = ["amdgpu" "nvidia"];
+  specialisation = {
+    nvidia.configuration = {
+      system.nixos.tags = [ "NVIDIA" ]
 
-  hardware.nvidia = {
+      # Load nvidia driver for Xorg and Wayland
+      services.xserver.videoDrivers = ["amdgpu" "nvidia"];
 
-    # Modesetting is required.
-    modesetting.enable = false;
+      hardware.nvidia = {
+        # Use the NVidia open source kernel module (not to be confused with the
+        # independent third-party "nouveau" open source driver).
+        # Support is limited to the Turing and later architectures. Full list of 
+        # supported GPUs is at: 
+        # https://github.com/NVIDIA/open-gpu-kernel-modules#compatible-gpus 
+        # Only available from driver 515.43.04+
+        # Currently alpha-quality/buggy, so false is currently the recommended setting.
+        open = false;
 
-    # Nvidia power management. Experimental, and can cause sleep/suspend to fail.
-    powerManagement.enable = false;
-    # Fine-grained power management. Turns off GPU when not in use.
-    # Experimental and only works on modern Nvidia GPUs (Turing or newer).
-    powerManagement.finegrained = false;
+        # Enable the Nvidia settings menu,
+        # accessible via `nvidia-settings`.
+        nvidiaSettings = true;
 
-    # Use the NVidia open source kernel module (not to be confused with the
-    # independent third-party "nouveau" open source driver).
-    # Support is limited to the Turing and later architectures. Full list of 
-    # supported GPUs is at: 
-    # https://github.com/NVIDIA/open-gpu-kernel-modules#compatible-gpus 
-    # Only available from driver 515.43.04+
-    # Currently alpha-quality/buggy, so false is currently the recommended setting.
-    open = false;
+        # Optionally, you may need to select the appropriate driver version for your specific GPU.
+        package = config.boot.kernelPackages.nvidiaPackages.stable;
 
-    # Enable the Nvidia settings menu,
-    # accessible via `nvidia-settings`.
-    nvidiaSettings = true;
-
-    # Optionally, you may need to select the appropriate driver version for your specific GPU.
-    package = config.boot.kernelPackages.nvidiaPackages.stable;
-
-    prime = {
-      offload = {
-        enable = true;
-        enableOffloadCmd = true;
-      };
-      amdgpuBusId = "PCI:07:00:0";
-      nvidiaBusId = "PCI:01:00:0";
+        prime = {
+          offload = {
+            enable = true;
+            enableOffloadCmd = true;
+          };
+          amdgpuBusId = "PCI:07:00:0";
+          nvidiaBusId = "PCI:01:00:0";
+        };
+      }
     };
   };
 }
-