{ lib, config, ... }: let lidarr_data_directory = "/var/lib/lidarr/.config/Lidarr"; in { config = lib.mkIf (config.services.lidarr.enable && config.host.impermanence.enable) { assertions = [ { assertion = config.services.lidarr.dataDir == lidarr_data_directory; message = "lidarr data directory does not match persistence"; } ]; environment.persistence."/persist/system/root" = { directories = [ { directory = lidarr_data_directory; user = "lidarr"; group = "lidarr"; } ]; }; }; }