from __future__ import annotations

from typing import Any


class Error(Exception):
    """The base exception for ufoLib2."""


class ExtrasNotInstalledError(Error):
    """The extras required for this feature are not installed."""

    def __init__(self, extras: str) -> None:
        super().__init__(f"Extras not installed: ufoLib2[{extras}]")

    def __call__(self, *args: Any, **kwargs: Any) -> None:
        raise self