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{ config, pkgs, ... }:
with pkgs.lib;
let
cfg = config.services.redshift;
in {
options = {
services.redshift.enable = mkOption {
type = types.bool;
default = false;
example = true;
description = "Enable Redshift to change your screen's colour temperature depending on the time of day";
};
services.redshift.latitude = mkOption {
description = "Your current latitude";
type = types.string;
};
services.redshift.longitude = mkOption {
description = "Your current longitude";
type = types.string;
};
services.redshift.temperature = {
day = mkOption {
description = "Colour temperature to use during day time";
default = 5500;
type = types.int;
};
night = mkOption {
description = "Colour temperature to use during night time";
default = 3700;
type = types.int;
};
};
};
config = mkIf cfg.enable {
systemd.services.redshift = {
description = "Redshift colour temperature adjuster";
requires = [ "display-manager.service" ];
after = [ "display-manager.service" ];
script = ''
${pkgs.redshift}/bin/redshift \
-l ${cfg.latitude}:${cfg.longitude} \
-t ${toString cfg.temperature.day}:${toString cfg.temperature.night}
'';
environment = { DISPLAY = ":0"; };
serviceConfig.Restart = "always";
};
};
}
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