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{
pov,
config,
lib,
...
}:
let
inherit (lib) types;
cfg = lib.getAttrFromPath pov config;
cfgRoot = lib.getAttrFromPath (lib.remove [ "hardware" "video" ] pov) config;
in
{
options = {
enable = {
type = types.bool;
default = false;
description = ''
Enable NVIDIA hardware support
'';
};
open = {
type = types.bool;
default = false;
};
powerManagement = {
type = types.enum [
"on"
"off"
"finegrained"
];
default = "on";
description = ''
on/off: Whether to enable experimental power management through systemd. For more information, see the NVIDIA docs,
on Chapter 21. Configuring Power Management Support.
finegrained: Whether to enable experimental power management of PRIME offload. For more information, see the NVIDIA docs,
on Chapter 22. PCI-Express Runtime D3 (RTD3) Power Management.
'';
};
integrated = {
enable = {
type = types.bool;
default = false;
description = ''
Enable support for integrated hardware
'';
};
integratedBus = {
type = types.str;
default = if config.hardware.cpu.vendor == "intel" then "PCI:0:2:0" else null;
description = ''
Bus ID of the integrated GPU. You can find it using lspci, either under 3D or VGA
'';
};
dedicatedBus = {
type = types.str;
default = "PCI:1:0:0";
description = ''
Bus ID of the NVIDIA GPU. You can find it using lspci, either under 3D or VGA
'';
};
};
};
config = lib.mkIf (cfg.enable && cfg.nvidia.enable) (
lib.mkMerge [
{
assertions = [
{
assertion = !cfg.nvidia.open -> cfgRoot.modules.unfree.enable;
message = ''
The programs.nvidia module uses unfree software if open is set to false.
To use it you need to
- set modules.unfree.enable to true
OR
- set.modules.video.nvidia.open to true
'';
}
];
boot = {
initrd.availableKernelModules = [
"nvidia"
"nvidia_modeset"
"nvidia_drm"
"nvidia_uvm"
];
kernelParams = [ "nvidia.NVreg_UsePageAttributeTable=1" ];
};
environment.sessionVariables = {
_JAVA_AWT_WM_NONREPARENTING = "1";
GBM_BACKEND = "nvidia-drm";
NIXOS_OZONE_WL = "1";
SDL_VIDEODRIVER = "wayland"; # Can break some native games
WLR_NO_HARDWARE_CURSORS = "1";
};
services.xserver.videoDrivers = [
"fbdev"
"modesetting"
"nvidia"
];
hardware = {
# NVIDIA
nvidia = {
inherit (cfg.nvidia) open;
nvidiaSettings = false;
# Kernel modesetting
modesetting.enable = true;
package = config.boot.kernelPackages.nvidiaPackages.latest;
# PowerManagement
powerManagement.enable = cfg.powerManagement == "on" || cfg.powerManagement == "finegrained";
powerManagement.finegrained = cfg.nvidia.powerManagement == "finegrained";
# Integrated GPU
prime =
if cfg.nvidia.integrated.enable then
{
offload.enable = true;
"${config.hardware.cpu.vendor}BusId" = cfg.nvidia.integrated.integratedBus;
nvidiaBusId = cfg.nvidia.integrated.dedicatedBus;
}
else
{ };
};
};
}
(lib.mkIf (!cfg.nvidia.open) {
modules.unfree.list = [ "nvidia-x11" ];
})
]
);
}