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macbook: add keyboard backlight key bindings and permissions

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- Add XF86KbdBrightnessUp/Down keybindings (Macbook-only) using swayosd
  for consistent OSD behaviour with screen brightness and volume
- Enable hardware.acpilight for udev rules allowing video group to write
  to /sys/class/leds/ (keyboard backlight)
- Add fred to the video group so brightnessctl/swayosd can write backlight values

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
rope 2026-05-17 12:58:06 +01:00
parent 1d491f4bd2
commit cdb4cbd6c0
3 changed files with 8 additions and 1 deletions
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4
hosts/FredOS-Macbook.nix
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@ -24,6 +24,10 @@
boot.loader.systemd-boot.configurationLimit = 5;
boot.initrd.systemd.enable = true;
# Allow video group (fred) to write to /sys/class/backlight and /sys/class/leds
# (screen brightness and keyboard backlight)
hardware.acpilight.enable = true;
services.logind.settings.Login = {
HandleLidSwitch = "suspend";
HandleLidSwitchExternalPower = "suspend";