Add & Improve GPU profiles as well as hybrid ones

config/home/packages.nix

@@ -17,5 +17,6 @@
       inherit username; inherit wallpaperGit; })
     (import ./../scripts/themechange.nix { inherit pkgs; inherit flakeDir; })
     (import ./../scripts/theme-selector.nix { inherit pkgs; })
+    (import ./../scripts/nvidia-offload.nix { inherit pkgs; })
   ];
 }

config/scripts/nvidia-offload.nix

@@ -0,0 +1,9 @@
+{ pkgs }:
+
+pkgs.writeShellScriptBin "nvidia-offload" ''
+  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 "$@"
+''

config/system/default.nix

@@ -7,6 +7,8 @@
     ./boot.nix
     ./displaymanager.nix
     ./intel-gpu.nix
+    ./intel-nvidia.nix
+    ./nvidia.nix
     ./packages.nix
     ./polkit.nix
     ./services.nix

config/system/intel-nvidia.nix

@@ -0,0 +1,52 @@
+{ pkgs, config, lib, gpuType,
+  intel-bus-id, nvidia-bus-id, ... }:
+
+lib.mkIf ("${gpuType}" == "intel-nvidia") { 
+  nixpkgs.config.packageOverrides =
+    pkgs: {
+      vaapiIntel = pkgs.vaapiIntel.override {
+      enableHybridCodec = true;
+    };
+  };
+  # OpenGL
+  hardware.opengl = {
+    extraPackages = with pkgs; [
+      intel-media-driver
+      vaapiIntel
+      vaapiVdpau
+      libvdpau-va-gl
+    ];
+  };
+  services.xserver.videoDrivers = ["nvidia"];
+  hardware.nvidia = {
+    # Modesetting is required.
+    modesetting.enable = true;
+    # Nvidia power management. Experimental, and can cause sleep/suspend to fail.
+    powerManagement.enable = false;
+    # Fine-grained power management. Turns off GPU when not in use.
+    # Experimental and only works on modern Nvidia GPUs (Turing or newer).
+    powerManagement.finegrained = false;
+    # Use the NVidia open source kernel module (not to be confused with the
+    # independent third-party "nouveau" open source driver).
+    # Support is limited to the Turing and later architectures. Full list of
+    # supported GPUs is at:
+    # https://github.com/NVIDIA/open-gpu-kernel-modules#compatible-gpus
+    # Only available from driver 515.43.04+
+    # Currently alpha-quality/buggy, so false is currently the recommended setting.
+    open = false;
+    # Enable the Nvidia settings menu,
+	# accessible via `nvidia-settings`.
+    nvidiaSettings = true;
+    # Optionally, you may need to select the appropriate driver version for your specific GPU.
+    package = config.boot.kernelPackages.nvidiaPackages.stable;
+    prime = {
+      offload = {
+		enable = true;
+		enableOffloadCmd = true;
+	  };
+      # Make sure to use the correct Bus ID values for your system!
+      intelBusId = "${intel-bus-id}";
+      nvidiaBusId = "${nvidia-bus-id}";
+    };
+  };
+}

config/system/nvidia.nix

@@ -0,0 +1,27 @@
+{ pkgs, config, lib, gpuType, ... }:
+
+lib.mkIf ("${gpuType}" == "nvidia") { 
+  services.xserver.videoDrivers = ["nvidia"];
+  hardware.nvidia = {
+    # Modesetting is required.
+    modesetting.enable = true;
+    # 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;
+    # 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;
+    # 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;
+  };
+}

config/system/packages.nix

@@ -13,7 +13,7 @@ in {
   environment.systemPackages = with pkgs; [
     wget curl git cmatrix lolcat neofetch htop btop libvirt
     polkit_gnome lm_sensors unzip unrar libnotify eza
-    v4l-utils ydotool wl-clipboard socat cowsay lsd 
+    v4l-utils ydotool wl-clipboard socat cowsay lsd lshw
     pkg-config meson hugo gnumake ninja go nodejs symbola
     noto-fonts-color-emoji material-icons brightnessctl
     toybox virt-viewer jetbrains.pycharm-community-bin

flake.nix

@@ -34,9 +34,15 @@
     flakeDir = "/home/${username}/zaneyos";
     # Driver selection profile
     # Options include amd (tested), intel, nvidia
+    # GPU hybrid options: intel-nvidia, amd-nvidia
     # vm for both if you are running a vm
     cpuType = "amd";
     gpuType = "amd";
+    # Run: sudo lshw -c display to find this info
+    # This is needed for hybrid nvidia offloading
+    # Run: nvidia-offload (insert program name)
+    intel-bus-id = "PCI:0:2:0";
+    nvidia-bus-id = "PCI:14:0:0";
 
     pkgs = import nixpkgs {
       inherit system;