def all_merged_configs(base_config, all_configs):
    """Merge every override config into the base config."""
    merged = {}
    for config_name, config_data in all_configs.items():
        merged[config_name] = deep_update(deepcopy(base_config), config_data)
    return merged
Merge every override config into the base config.
py/tests/unit/app/test_config.py