From a619bea0fcc0aa314703b3ded2f1e7f8ab93ad38 Mon Sep 17 00:00:00 2001
From: derped <derped@ophanim.de>
Date: Sat, 26 Aug 2023 08:04:11 +0200
Subject: [PATCH] Allow users in the video group to change the screen
 brightness.

---
 services/desktop.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/services/desktop.nix b/services/desktop.nix
index 9c1a530..3c78263 100644
--- a/services/desktop.nix
+++ b/services/desktop.nix
@@ -52,5 +52,9 @@ in mkIf (elem "desktop" cfg.services) {
       };
     };
   };
+  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 664 /sys/class/backlight/%k/brightness"
+  '';
   machine.pkgsets.python3.pkgs = with pkgs.python310Packages; [ py3status pytz tzlocal ];
 }