{ config, lib, ... }: let cfg = config.custom.redshift; in { options.custom.redshift.enable = lib.mkOption { type = lib.types.bool; default = false; }; config = lib.mkIf cfg.enable { services.redshift = { executable = "/bin/redshift-gtk"; enable = true; temperature = { night = 2800; day = 6500; }; brightness = { night = "0.5"; day = "1"; }; }; location = { latitude = 60.17; longitude = 24.94; }; }; }