From f6dedeea790c003c1c01266a5de086aaf05af391 Mon Sep 17 00:00:00 2001
From: Katherina Walshe-Grey <git@qenya.tel>
Date: Wed, 10 Sep 2025 11:58:32 +0100
Subject: [PATCH] kilgharrah: Enable CUDA (NVIDIA hardware acceleration)

---
 hosts/kilgharrah/hardware.nix | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/hosts/kilgharrah/hardware.nix b/hosts/kilgharrah/hardware.nix
index 0583c64..89b502c 100644
--- a/hosts/kilgharrah/hardware.nix
+++ b/hosts/kilgharrah/hardware.nix
@@ -7,6 +7,12 @@
 
   services.xserver.videoDrivers = [ "nvidia" ];
   hardware.nvidia.open = false;
+  nixpkgs.config.cudaSupport = true;
+  nix.settings = {
+    # Community cache with prebuilt packages with cudaSupport enabled
+    substituters = [ "https://nix-community.cachix.org" ];
+    trusted-public-keys = [ "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs=" ];
+  };
 
   # # Downgrade to driver version 535 as 550 has problems with Wayland
   # hardware.nvidia.package =