And the also fairly simple task:

@task(target='{task_name}/{scan_id}', checkpoint=True, nout=2)

def bourget2bids(participant_id: str, scan_id: str, study_constants): tmp_BIDS_dir, bourget_path = get_from_bourget(participant_id, scan_id, study_constants['name'], study_constants['scripts_dir']) add_ASL_metadata(scan_id, study_constants['name']) BIDS_path = copy_to_study_data_folder(participant_id, scan_id, tmp_BIDS_dir, study_constants['name'], study_constants['data_dir']) return bourget_path, BIDS_path