{ config, lib, ... }: { services.gammastep = { enable = true; settings = { general = { temp-day = lib.mkForce 1300; temp-night = lib.mkForce 1300; gamma = "0.8:0.8:0.8"; fade = 0; adjustment-method = "wayland"; location-provider = "manual"; }; manual = { lat = 48.1; lon = 11.6; }; }; }; }