Satori: a.

Signed-off-by: Amneesh Singh <natto@weirdnatto.in>

modules/graphics.nix

@@ -0,0 +1,53 @@
+{ config, pkgs, lib, ... }:
+let
+  nvidia-offload = pkgs.writeShellScriptBin "nvi" ''
+    export __NV_PRIME_RENDER_OFFLOAD=1
+    export __NV_PRIME_RENDER_OFFLOAD_PROVIDER=NVIDIA-G0
+    export __GLX_VENDOR_LIBRARY_NAME=nvidia
+    export __VK_LAYER_NV_optimus=NVIDIA_only
+    exec -a "$0" "$@"
+  '';
+in
+{
+  environment.systemPackages = with pkgs; [
+    nvidia-offload
+  ];
+  hardware = {
+    opengl =
+      let
+        fn = oa: with lib; {
+          nativeBuildInputs = oa.nativeBuildInputs ++ singleton pkgs.glslang;
+          mesonFlags = oa.mesonFlags ++ singleton "-Dvulkan-layers=device-select,overlay";
+          patches = oa.patches ++ singleton ./mesa-vulkan-layer-nvidia.patch;
+          postInstall = oa.postInstall + ''
+              mv $out/lib/libVkLayer* $drivers/lib
+              layer=VkLayer_MESA_device_select
+              substituteInPlace $drivers/share/vulkan/implicit_layer.d/''${layer}.json \
+                --replace "lib''${layer}" "$drivers/lib/lib''${layer}"
+              layer=VkLayer_MESA_overlay
+              substituteInPlace $drivers/share/vulkan/explicit_layer.d/''${layer}.json \
+                --replace "lib''${layer}" "$drivers/lib/lib''${layer}"
+            '';
+        };
+      in
+      with pkgs; {
+        driSupport32Bit = true;
+        enable = true;
+        package = (mesa.overrideAttrs fn).drivers;
+        package32 = (pkgsi686Linux.mesa.overrideAttrs fn).drivers;
+      };
+    nvidia = {
+      prime = {
+        #      sync.enable = true;
+        offload = { enable = true; };
+        intelBusId = "PCI:0:2:0";
+        nvidiaBusId = "PCI:1:0:0";
+      };
+      modesetting = { enable = true; };
+    };
+  };
+  services.xserver = {
+    videoDrivers = [ "nvidia" ];
+    dpi = 96;
+  };
+}