File: //usr/local/lib/python3.10/dist-packages/pip/_vendor/pyproject_hooks/__init__.py
"""Wrappers to call pyproject.toml-based build backend hooks.
"""
from typing import TYPE_CHECKING
from ._impl import (
    BackendUnavailable,
    BuildBackendHookCaller,
    HookMissing,
    UnsupportedOperation,
    default_subprocess_runner,
    quiet_subprocess_runner,
)
__version__ = "1.2.0"
__all__ = [
    "BackendUnavailable",
    "BackendInvalid",
    "HookMissing",
    "UnsupportedOperation",
    "default_subprocess_runner",
    "quiet_subprocess_runner",
    "BuildBackendHookCaller",
]
BackendInvalid = BackendUnavailable  # Deprecated alias, previously a separate exception
if TYPE_CHECKING:
    from ._impl import SubprocessRunner
    __all__ += ["SubprocessRunner"]