import sys from typing import List, Optional from pip._internal.cli.main import main def _wrapper(args: Optional[List[str]] = None, _nowarn: bool = False) -> int: """Central wrapper for all old entrypoints. Historically pip has had several entrypoints defined. Because of issues arising from PATH, sys.path, multiple Pythons, their interactions, and most of them having a pip installed, users suffer every time an entrypoint gets moved. To alleviate this pain, and provide a mechanism for warning users and directing them to an appropriate place for help, we now define all of our old entrypoints as wrappers for the current one. """ if not _nowarn: sys.stderr.write( "WARNING: pip is being invoked by an old script wrapper. This will " "fail in a future version of pip.\n" "Please see https://github.com/pypa/pip/issues/5599 for advice on " "fixing the underlying issue.\n" "To avoid this problem you can invoke Python with '-m pip' instead of " "running pip directly.\n" ) return main(args)