Source code for requirementslib.environment

# -*- coding=utf-8 -*-
from __future__ import print_function, absolute_import

import os
from appdirs import user_cache_dir


def is_type_checking():
    try:
        from typing import TYPE_CHECKING
    except ImportError:
        return False
    return TYPE_CHECKING


REQUIREMENTSLIB_CACHE_DIR = os.getenv("REQUIREMENTSLIB_CACHE_DIR", user_cache_dir("pipenv"))
MYPY_RUNNING = os.environ.get("MYPY_RUNNING", is_type_checking())