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nixos/light: add minBrightness option

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Make the minimum brightness level configurable instead of using an arbitrary value of 0.1.
This commit is contained in:
Hugo Cartigny (BlueskyFR) 2025-03-01 20:33:31 +01:00
parent 6313551cd0
commit f7548cccda
1 changed files with 12 additions and 2 deletions
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14
nixos/modules/programs/light.nix
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@ -49,6 +49,15 @@ in
'';
};
minBrightness = lib.mkOption {
type = lib.types.numbers.between 0 100;
default = 0.1;
description = ''
The minimum authorized brightness value, e.g. to avoid the
display going dark.
'';
};
};
};
@ -63,13 +72,14 @@ in
let
light = "${pkgs.light}/bin/light";
step = builtins.toString cfg.brightnessKeys.step;
minBrightness = builtins.toString cfg.brightnessKeys.minBrightness;
in
[
{
keys = [ 224 ];
events = [ "key" ];
# Use minimum brightness 0.1 so the display won't go totally black.
command = "${light} -N 0.1 && ${light} -U ${step}";
# -N is used to ensure that value >= minBrightness
command = "${light} -N ${minBrightness} && ${light} -U ${step}";
}
{
keys = [ 225 ];