Adding the Legion Pro 7 16IRX9H model. Initially, I simply copied it …

…from the 16IRX8H, but I am still having issues with WiFi and sound (to be resolved).

Ref.: https://psref.lenovo.com/Product/Legion/Legion_Pro_7_16IRX9H

README.md

@@ -199,6 +199,7 @@ See code for all available configurations.
 | [Lenovo Legion 7 16achg6 (Hybrid)](lenovo/legion/16achg6/hybrid)       | `<nixos-hardware/lenovo/legion/16achg6/hybrid>`         |
 | [Lenovo Legion 7 16achg6 (Nvidia)](lenovo/legion/16achg6/nvidia)       | `<nixos-hardware/lenovo/legion/16achg6/nvidia>`         |
 | [Lenovo Legion 7i Pro 16irx8h (Intel)](lenovo/legion/16irx8h)          | `<nixos-hardware/lenovo/legion/16irx8h>`                |
+| [Lenovo Legion 7 Pro 16irx9h (Intel)](lenovo/legion/16irx9h)           | `<nixos-hardware/lenovo/legion/16irx9h>`                |
 | [Lenovo Legion Slim 7 Gen 7 (AMD)](lenovo/legion/16arha7/)             | `<nixos-hardware/lenovo/legion/16arha7>`                |
 | [Lenovo Legion T5 AMR5](lenovo/legion/t526amr5)                        | `<nixos-hardware/lenovo/legion/t526amr5>`               |
 | [Lenovo Legion Y530 15ICH](lenovo/legion/15ich)                        | `<nixos-hardware/lenovo/legion/15ich>`                  |

lenovo/legion/16irx9h/default.nix

@@ -0,0 +1,35 @@
+{
+  lib,
+  config,
+  ...
+}: {
+  imports = [
+    ../../../common/cpu/intel
+    ../../../common/gpu/nvidia/prime.nix
+    ../../../common/gpu/nvidia/ada-lovelace
+    ../../../common/pc/laptop
+    ../../../common/pc/laptop/ssd
+    ../../../common/hidpi.nix
+  ];
+
+  boot.initrd.kernelModules = ["nvidia"];
+  boot.extraModulePackages = [config.boot.kernelPackages.lenovo-legion-module config.boot.kernelPackages.nvidia_x11];
+
+  hardware = {
+    nvidia = {
+      modesetting.enable = lib.mkDefault true;
+      powerManagement.enable = lib.mkDefault true;
+      #
+      prime = {
+        intelBusId = "PCI:00:02:0";
+        nvidiaBusId = "PCI:01:00:0";
+      };
+    };
+  };
+
+  # Cooling management
+  services.thermald.enable = lib.mkDefault true;
+
+  # √(2560² + 1600²) px / 16 in ≃ 189 dpi
+  services.xserver.dpi = 189;
+}