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https://github.com/NixOS/nixos-hardware
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9194b8e949
The `-a` from exec sets the `$0` from the process. So `exec -a "$0"` would set the name of the new process to `nvidia-offload` (the name of the script), however this is causing issues with a few programs that try to interpret `$0` in a special way. For example, see `wine`: ``` $ nvidia-offload /nix/store/zhv91s26gsrl1w8yn9800xd03a31r3wj-wine-osu-7.0/bin/wine .osu/drive_c/osu/osu\!.exe /nix/store/zhv91s26gsrl1w8yn9800xd03a31r3wj-wine-osu-7.0/bin/nvidia-offload: could not open ``` What I think `wine` is doing here is trying to re-exec `wine` again, but to do so it tries to figure out the original call of wine by readind `$0`, and will fail in this case because the `$0` was changed because of the `nvidia-offload` script using `-a` flag, as explained above. Instead, let's simplify this. There is no good reason to rename the `$0` from the script anyway (it just sets a few environment variables), so let's just remove it. We may lose the ability to know if the command is being offloaded, but I think having more commands to work is a good trade-off.
26 lines
758 B
Nix
26 lines
758 B
Nix
{ lib, pkgs, ... }:
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# This creates a new 'nvidia-offload' program that runs the application passed to it on the GPU
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# As per https://nixos.wiki/wiki/Nvidia
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let
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nvidia-offload = pkgs.writeShellScriptBin "nvidia-offload" ''
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export __NV_PRIME_RENDER_OFFLOAD=1
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export __NV_PRIME_RENDER_OFFLOAD_PROVIDER=NVIDIA-G0
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export __GLX_VENDOR_LIBRARY_NAME=nvidia
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export __VK_LAYER_NV_optimus=NVIDIA_only
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exec "$@"
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'';
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in
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{
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services.xserver.videoDrivers = lib.mkDefault [ "nvidia" ];
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environment.systemPackages = [ nvidia-offload ];
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hardware.nvidia.prime = {
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offload.enable = lib.mkDefault true;
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# Hardware should specify the bus ID for intel/nvidia devices
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};
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hardware.opengl.extraPackages = with pkgs; [
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vaapiVdpau
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];
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}
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