From b53fc0a7858871e58332ee02ffbc0f256a0d5afe Mon Sep 17 00:00:00 2001
From: ChaosAttractor <46527539+LostAttractor@users.noreply.github.com>
Date: Mon, 19 Dec 2022 13:03:23 +0800
Subject: [PATCH] =?UTF-8?q?Add=20specialisation=20for=20=E2=80=9CDDG"=20mo?=
 =?UTF-8?q?de=20is=20enabled?=
MIME-Version: 1.0
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---
 lenovo/legion/16ach6h/default.nix | 36 ++++++++++++++++++++-----------
 1 file changed, 24 insertions(+), 12 deletions(-)

diff --git a/lenovo/legion/16ach6h/default.nix b/lenovo/legion/16ach6h/default.nix
index 4ecfd5a..d8149e1 100644
--- a/lenovo/legion/16ach6h/default.nix
+++ b/lenovo/legion/16ach6h/default.nix
@@ -1,4 +1,4 @@
-{ lib, ... }:
+{ config, lib, ... }:
 
 {
   imports = [
@@ -10,17 +10,29 @@
     ./edid
   ];
 
-  hardware.amdgpu.loadInInitrd = lib.mkDefault false;
+  config = lib.mkMerge [
+    {
+      hardware.amdgpu.loadInInitrd = lib.mkDefault false;
 
-  hardware.nvidia = {
-    modesetting.enable = lib.mkDefault true;
-    powerManagement.enable = lib.mkDefault true;
+      hardware.nvidia = {
+        modesetting.enable = lib.mkDefault true;
+        powerManagement.enable = lib.mkDefault true;
+      };
+      
+      services.thermald.enable = lib.mkDefault true;
 
-    prime = {
-      amdgpuBusId = "PCI:6:0:0";
-      nvidiaBusId = "PCI:1:0:0";
-    };
-  };
+      specialisation.ddg.configuration = {
+        # This specialisation is for the case where "DDG" (A hardware feature that can enable in bios) is enabled, since the amd igpu is blocked at hardware level and the built-in display is directly connected to the dgpu, we no longer need the amdgpu and prime configuration.
+        services.xserver.videoDrivers = [ "nvidia" ]; # This will override services.xserver.videoDrivers = lib.mkDefault [ "amdgpu" "nvidia" ];
+        hardware.nvidia.prime.offload.enable = false;
+      };
+    }
 
-  services.thermald.enable = lib.mkDefault true;
-}
+    (lib.mkIf (config.specialisation != {}) {
+      hardware.nvidia.prime = {
+        amdgpuBusId = "PCI:6:0:0";
+        nvidiaBusId = "PCI:1:0:0";
+      };
+    })
+  ];
+}
\ No newline at end of file