30 lines
759 B
Nix
30 lines
759 B
Nix
{
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config,
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lib,
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pkgs,
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...
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}:
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with lib;
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let
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cfg = config.custom.services.udev;
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in
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{
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options.custom.services.udev.enable = mkOption { default = false; };
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config = mkIf cfg.enable {
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# https://wiki.archlinux.org/title/Udev
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# Allow video group to change display brightness
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# https://raw.githubusercontent.com/ErikReider/SwayOSD/main/data/udev/99-swayosd.rules
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services.udev.extraRules =
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let
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chgrp = "${pkgs.coreutils}/bin/chgrp";
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chmod = "${pkgs.coreutils}/bin/chmod";
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in
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''
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ACTION=="add", SUBSYSTEM=="backlight", RUN+="${chgrp} video /sys/class/backlight/%k/brightness"
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ACTION=="add", SUBSYSTEM=="backlight", RUN+="${chmod} g+w /sys/class/backlight/%k/brightness"
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'';
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};
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}
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