mirror of
https://github.com/ryan4yin/nix-config.git
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105 lines
3.5 KiB
Nix
105 lines
3.5 KiB
Nix
{
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config,
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pkgs,
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...
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}:
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let
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# prime.offload keeps the Intel iGPU as the default renderer so the dGPU stays
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# free for LLM workloads, so each consumer that should use the RTX 4090 opts
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# into PRIME render offload explicitly. Games need these variables in their
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# Steam launch options: Steam's bubblewrap sandbox does not expose /run, so
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# the nvidia-offload wrapper on PATH is unusable there. WiVRn's server is a
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# headless Vulkan app and needs the same environment; headset-launched games
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# start in separate units or an already running Steam client, so they need
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# the same per-game launch option (see hosts/idols-ai/VR.md).
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dgpuEnv = {
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__NV_PRIME_RENDER_OFFLOAD = "1";
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__NV_PRIME_RENDER_OFFLOAD_PROVIDER = "NVIDIA-G0";
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__GLX_VENDOR_LIBRARY_NAME = "nvidia";
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__VK_LAYER_NV_optimus = "NVIDIA_only";
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};
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in
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{
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# ===============================================================================================
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# for Nvidia GPU
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# https://wiki.nixos.org/wiki/NVIDIA
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# https://wiki.hyprland.org/Nvidia/
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# ===============================================================================================
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# Hybrid graphics with PRIME[integrated GPU (iGPU) + dedicated GPU (dGPU)]
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hardware.nvidia.prime = {
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# puts dGPU(Nvidia) to sleep and lets the iGPU handle all tasks by default.
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offload = {
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enable = true;
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enableOffloadCmd = true; # generate a nvidia-offload command
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};
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intelBusId = "PCI:0@0:2:0";
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nvidiaBusId = "PCI:2@0:0:0";
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};
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programs.gamescope.env = dgpuEnv;
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# Apply offload to the WiVRn server (see ai/vr.nix). Games need their own
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# offload configuration; this service environment does not propagate to them.
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services.wivrn.monadoEnvironment = dgpuEnv;
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boot.kernelParams = [
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# Since NVIDIA does not load kernel mode setting by default,
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# enabling it is required to make Wayland compositors function properly.
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"nvidia-drm.fbdev=1"
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];
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services.xserver.videoDrivers = [ "nvidia" ]; # will install nvidia-vaapi-driver by default
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hardware.nvidia = {
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# Open-source kernel modules are preferred over and planned to steadily replace proprietary modules
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open = true;
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nvidiaSettings = true;
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# Optionally, you may need to select the appropriate driver version for your specific GPU.
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# https://github.com/NixOS/nixpkgs/blob/nixos-unstable/pkgs/os-specific/linux/nvidia-x11/default.nix
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package = config.boot.kernelPackages.nvidiaPackages.production;
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# required by most wayland compositors!
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modesetting.enable = true;
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powerManagement.enable = true;
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};
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hardware.nvidia-container-toolkit.enable = true;
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hardware.graphics = {
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enable = true;
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# needed by nvidia-docker
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enable32Bit = true;
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};
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# GPU monitoring: CUDA btop (CAP_PERFMON also lets it read the Intel iGPU),
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# nvtop, and the community nvidia_gpu_exporter.
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modules.btop = {
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package = pkgs.btop-cuda;
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perfmon = true;
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};
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environment.systemPackages = [ pkgs.nvtopPackages.full ];
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services.prometheus.exporters.nvidia-gpu.enable = true;
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services.sunshine.settings = {
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adapter_name = "/dev/dri/by-path/pci-0000:00:02.0-render"; # Intel iGPU
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encoder = "vaapi";
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};
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systemd.user.services.sunshine = {
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after = [ "niri.service" ];
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environment.LIBVA_DRIVER_NAME = "iHD";
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preStart = ''
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for _ in {1..20}; do
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if ${config.programs.niri.package}/bin/niri msg outputs | ${pkgs.gnugrep}/bin/grep -q '^Output '; then
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exit 0
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fi
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sleep 0.5
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done
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echo "Sunshine requires at least one Niri output" >&2
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exit 1
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'';
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};
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}
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