lots

hardware/gpu/cuda.nix

@@ -0,0 +1,50 @@
+{ config, pkgs, lib, ... }:
+{
+  # assumes common-gpu-nvidia from nixos-hardware is also added
+  # TODO: should we move it from flake.nix to here?
+
+  # https://nixos.wiki/wiki/Nvidia
+
+  #nixpkgs.config.cudaSupport = true; # TODO: TOO SLOW, BREAKS
+  #nixpkgs.config.nvidiaSupport = true; # TODO: used only by zenith
+  nixpkgs.config.allowUnfreePredicate = pkg: lib.any (x: x) [
+    (lib.hasInfix "nvidia"  (lib.toLower (lib.getName pkg)))
+    (lib.hasInfix "cuda"    (lib.toLower (lib.getName pkg)))
+    (lib.hasInfix "cudnn"   (lib.toLower (lib.getName pkg)))
+    (lib.hasInfix "cublas"  (lib.toLower (lib.getName pkg)))
+  ];
+
+  hardware.opengl.enable = true;
+  #hardware.nvidia.package = config.boot.kernelPackages.nvidiaPackages.stable;
+  hardware.nvidia.package = config.boot.kernelPackages.nvidiaPackages.latest;
+  #hardware.nvidia.modesetting.enable = true;
+
+  # add this to the host in question:
+  #hardware.nvidia.prime = {
+  #  offload.enable = true;
+  #  # Bus IDs. You can find them using lspci, grepping for "3D" or "VGA"
+  #  intelBusId  = "PCI:0:2:0";
+  #  nvidiaBusId = "PCI:1:0:0";
+  #};
+
+  environment.systemPackages = with pkgs; ([
+    nvtop-nvidia
+
+  ] ++ lib.optional config.hardware.nvidia.prime.offload.enable [
+    (writeShellScriptBin "prime-run" ''
+      export __NV_PRIME_RENDER_OFFLOAD=1
+      export __NV_PRIME_RENDER_OFFLOAD_PROVIDER=NVIDIA-G0
+      export __GLX_VENDOR_LIBRARY_NAME=nvidia
+      export __VK_LAYER_NV_optimus=NVIDIA_only
+      exec "$@"
+    '')
+    # already added by nixos-hardware.common-gpu-nvidia
+    #(writeShellScriptBin "nvidia-offload" ''
+    #  export __NV_PRIME_RENDER_OFFLOAD=1
+    #  export __NV_PRIME_RENDER_OFFLOAD_PROVIDER=NVIDIA-G0
+    #  export __GLX_VENDOR_LIBRARY_NAME=nvidia
+    #  export __VK_LAYER_NV_optimus=NVIDIA_only
+    #  exec "$@"
+    #'')
+  ]);
+}