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{ config, lib, ... }:
let
cfg = config.hardware.nvidia;
isNvidiaEnabled = lib.elem "nvidia" config.services.xserver.videoDrivers;
# Unlike Nixpkgs, I know all of my GPUs should prefer the open modules after 560
useOpenModulesByDefault = lib.versionAtLeast config.hardware.nvidia.package.version "560";
in
{
options.hardware.nvidia = {
nvk.enable = lib.mkEnableOption "an NVK specialisation";
};
config = lib.mkMerge [
{
hardware.nvidia = {
open = useOpenModulesByDefault;
# We usually want this to make suspend, etc. work
powerManagement.enable = lib.mkDefault true;
};
}
(lib.mkIf (isNvidiaEnabled && !config.hardware.nvidia.open) {
# Don't use GSP Firmware on proprietary driver
# https://github.com/NVIDIA/open-gpu-kernel-modules/issues/693
boot.kernelParams = [
"nvidia.NVreg_EnableGpuFirmware=0"
];
})
(lib.mkIf cfg.nvk.enable {
specialisation = {
nvk.configuration = {
boot = {
# required for GSP firmware
kernelParams = [ "nouveau.config=NvGspRm=1" ];
# we want early KMS
# https://wiki.archlinux.org/title/Kernel_mode_setting#Early_KMS_start
initrd.kernelModules = [ "nouveau" ];
};
hardware = {
graphics.extraPackages = lib.mkForce [ ];
nvidia-container-toolkit.enable = lib.mkForce false;
};
services.xserver.videoDrivers = lib.mkForce [ "modesetting" ];
system.nixos.tags = [ "with-nvk" ];
};
};
})
(lib.mkIf config.traits.containers.enable {
hardware.nvidia-container-toolkit.enable = true;
})
];
}
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