From 6f9ffc5c2db2cf650146b489aa8f8a5a0f1fce57 Mon Sep 17 00:00:00 2001
From: Tao Tien <29749622+taotien@users.noreply.github.com>
Date: Mon, 1 Apr 2024 16:36:43 -0700
Subject: [PATCH] backliht udev ules

---
 systems/NOlaptop.nix | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/systems/NOlaptop.nix b/systems/NOlaptop.nix
index 6df4d37..1c0534e 100644
--- a/systems/NOlaptop.nix
+++ b/systems/NOlaptop.nix
@@ -58,6 +58,11 @@ AttrKeyboardIntegration=internal";
   services.xserver.displayManager.defaultSession = "plasma";
   services.xserver.displayManager.sddm.wayland.enable = true;
 
+  services.udev.extraRules = ''
+    ACTION=="add", SUBSYSTEM=="backlight", RUN+="${pkgs.coreutils}/bin/chgrp video /sys/class/backlight/%k/brightness"
+    ACTION=="add", SUBSYSTEM=="backlight", RUN+="${pkgs.coreutils}/bin/chmod g+w /sys/class/backlight/%k/brightness"
+  '';
+
   boot.kernelPackages = pkgs.linuxPackages_latest;
   boot.initrd.availableKernelModules = [
     "nvme"