if is_gen_callable(call):
        cm = contextmanager_in_threadpool(contextmanager(call)(**sub_values))
    elif is_async_gen_callable(call):
        cm = asynccontextmanager(call)(**sub_values)
    return await stack.enter_async_context(cm)


async def solve_dependencies(
    *,
    request: Union[Request, WebSocket],
    dependant: Dependant,
    body: Optional[Union[Dict[str, Any], FormData]] = None,

    # since we're creating a new limiter for each call, any non-zero limit
    # works (1 is arbitrary)
    exit_limiter = CapacityLimiter(1)
    try:
        yield await run_in_threadpool(cm.__enter__)
    except Exception as e:
        ok = bool(
            await anyio.to_thread.run_sync(
                cm.__exit__, type(e), e, None, limiter=exit_limiter
            )
        )
        if not ok: