{ config, lib, ... }: let cfg = config.features.desktop.redshift; inherit (lib) mkEnableOption mkIf; in { options.features.desktop.redshift = { enable = mkEnableOption "Enable redshift"; }; config = mkIf cfg.enable { services.redshift.enable = true; services.redshift.latitude = "51.58"; services.redshift.longitude = "-2.99"; }; }