refactor: complete rewrite

modules/nixos/hardware/gpu/amd.nix

@@ -0,0 +1,32 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}: let
+  inherit (config.ooknet.hardware) gpu;
+  inherit (lib) mkIf mkDefault;
+  inherit (builtins) attrValues;
+in {
+  config = mkIf (gpu.type == "amd") {
+    hardware.graphics = {
+      extraPackages = attrValues {
+        inherit
+          (pkgs)
+          vulkan-tools
+          vulkan-loader
+          vulkan-extension-layer
+          vulkan-validation-layers
+          mesa
+          ;
+      };
+      extraPackages32 = [pkgs.driversi686Linux.amdvlk];
+    };
+    boot = {
+      initrd.kernelModules = ["amdgpu"];
+      kernelModules = ["amdgpu"];
+    };
+    environment.systemPackages = [pkgs.nvtopPackages.amd];
+    services.xserver.videoDrivers = mkDefault ["modesetting" "amdgpu"];
+  };
+}