programs.nix-required-mounts.presets.zluda.enable: init

    # TODO: Refactor `hardware.graphics` to ease referencing the closure

    # NOTE: A naive implementation may e.g. introduce a conditional infinite recursion (https://github.com/NixOS/nixpkgs/pull/488199)

    nvidia-gpu.unsafeFollowSymlinks = true;

    zluda = {

      onFeatures = [

        "cuda"

      ];

      paths = [

        pkgs.addDriverRunpath.driverLink

        "/dev/dri"

        "/dev/kfd"

        "/sys/devices/virtual/kfd"

        # As per https://www.kernel.org/doc/Documentation/admin-guide/devices.txt

        # 226 is the major ID for "Direct Rendering Infrastructure (DRI)" devices

        "/sys/dev/char/226:*"

      ]

      ++ config.hardware.graphics.extraPackages;

      unsafeFollowSymlinks = true;

    };

  };

in

{

      You may extend or override the exposed paths via the

      `programs.nix-required-mounts.allowedPatterns.nvidia-gpu.paths` option.

    '';

    presets.zluda.enable = lib.mkEnableOption ''

      Same as `programs.nix-required-mounts.presets.nvidia-gpu` but adds paths

      to the sandbox that are needed for running CUDA applications on top of

      the ZLUDA translation layer combined with AMD GPUs.

      You may extend or override the exposed paths via the

      `programs.nix-required-mounts.allowedPatterns.zluda.paths` option.

    '';

    allowedPatterns =

      with lib.types;

      lib.mkOption {

          inherit (defaults) nvidia-gpu;

        };

      })

      (lib.mkIf cfg.presets.zluda.enable {

        hardware.graphics.enable = lib.mkDefault true;

        hardware.amdgpu.zluda.enable = lib.mkDefault true;

        nix.settings.system-features = cfg.allowedPatterns.zluda.onFeatures;

        programs.nix-required-mounts.allowedPatterns = {

          inherit (defaults) zluda;

        };

      })

    ]

  );

}