From f90c10441b3b6e8715dff2c6873fb2c0bd9f24ba Mon Sep 17 00:00:00 2001
From: Sakooooo <78461130+Sakooooo@users.noreply.github.com>
Date: Sun, 13 Aug 2023 19:27:13 +0300
Subject: [PATCH] copy a little from nixpkgs/nixos

---
 modules/hardware/nvidia/default.nix | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/modules/hardware/nvidia/default.nix b/modules/hardware/nvidia/default.nix
index 7f7eaab1..1089c6e0 100644
--- a/modules/hardware/nvidia/default.nix
+++ b/modules/hardware/nvidia/default.nix
@@ -8,17 +8,18 @@
 }:
 with lib; let
   cfg = config.modules.hardware.nvidia;
+  busIDType = lib.types.strMatching "([[:print:]]+[\:\@][0-9]{1,3}\:[0-9]{1,2}\:[0-9])?";
 in {
   options.modules.hardware.nvidia = {
     enable = mkEnableOption false;
     prime.enable = mkEnableOption false;
     prime.intelBusID = mkOption {
-      type = types.str;
-      default = null;
+      type = busIDType;
+      default = "";
     };
     prime.nvidiaBusId = mkOption {
-      type = types.str;
-      default = null;
+      type = busIDType;
+      default = "";
     };
   };