{ lib, ... }: with lib; { options.systemd.services = mkOption { type = with types; attrsOf (submodule ({ config, name, ... }: { options.chant = { enable = mkEnableOption "listening for a waking chant"; }; config = lib.mkIf config.chant.enable { serviceConfig = { Type = "oneshot"; LoadCredential = [ "chantPayload:/run/chant/${name}" ]; }; environment.CHANT_PAYLOAD = "%d/chantPayload"; }; })); }; }