Build failure: hardware.nvidia

[biscotty666]

Steps To Reproduce

Steps to reproduce the behavior:

1. Rebuild after update

• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/d0e1602ddde669d5beb01aec49d71a51937ed7be' (2024-08-24)
  → 'github:nixos/nixpkgs/71e91c409d1e654808b2621f28a327acfdad8dc2' (2024-08-28)

Build log

error:
       … while calling the 'head' builtin

         at /nix/store/887hpp8a2i99n9jjwcvz6qkhhhqsvzkg-source/lib/attrsets.nix:1575:11:

         1574|         || pred here (elemAt values 1) (head values) then
         1575|           head values
             |           ^
         1576|         else

       … while evaluating the attribute 'value'

         at /nix/store/887hpp8a2i99n9jjwcvz6qkhhhqsvzkg-source/lib/modules.nix:821:9:

          820|     in warnDeprecation opt //
          821|       { value = addErrorContext "while evaluating the option `${showOption loc}':" value;
             |         ^
          822|         inherit (res.defsFinal') highestPrio;

       (stack trace truncated; use '--show-trace' to show the full trace)

       error: The option `hardware.nvidia.open' is used but not defined.
┏━ 1 Errors:
 ⋮
┃
┃          1574|         || pred here (elemAt values 1) (head values) then
┃          1575|           head values
┃              |           ^
┃          1576|         else
┃
┃        … while evaluating the attribute 'value'
┃
┃          at /nix/store/887hpp8a2i99n9jjwcvz6qkhhhqsvzkg-source/lib/modules.nix:8…
┃
┃           820|     in warnDeprecation opt //
┃           821|       { value = addErrorContext "while evaluating the option `${s…
┃              |         ^
┃           822|         inherit (res.defsFinal') highestPrio;
┃
┃        (stack trace truncated; use '--show-trace' to show the full trace)
┃
┃        error: The option `hardware.nvidia.open' is used but not defined.log here if short otherwise a link to a gist

Additional context

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Metadata

Please run nix-shell -p nix-info --run "nix-info -m" and paste the result.

[user@system:~]$ nix-shell -p nix-info --run "nix-info -m"
 - system: `"x86_64-linux"`
 - host os: `Linux 6.6.47, NixOS, 24.11 (Vicuna), 24.11.20240824.d0e1602`
 - multi-user?: `yes`
 - sandbox: `yes`
 - version: `nix-env (Nix) 2.18.5`
 - channels(root): `"nixos-23.11"`
 - nixpkgs: `/nix/store/ia1zpg1s63v6b3vin3n7bxxjgcs51s2r-source`

But I am using flakes and following unstable.

{ config, lib, pkgs, ... }:
{

  hardware.graphics = {
    enable = true;
  };

  services.xserver.videoDrivers = ["nvidia"];

  hardware.nvidia = {
    modesetting.enable = true;

    nvidiaSettings = true;

    prime = {
      sync.enable = true;
      intelBusId = "PCI:0:2:0";
      nvidiaBusId = "PCI:1:0:0";
    };

  };
}

---

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[BCNelson]

It was an intentional breaking change #337289 (comment)

[biscotty666]

TY.

[lebensterben]

To sum up, hardware.nvidia.open is non-optional and must be set now:

• When true, use open source NVIDIA kernel module, this is now recommended by NVIDIA, but it doesn't work with older drivers.
• When false, use proprietary kernel module. This is needed for people with older NVIDIA cards.

More information: https://developer.nvidia.com/blog/nvidia-transitions-fully-towards-open-source-gpu-kernel-modules/