text: import os
  from shutil import rmtree
  
  from .click import secho
  # Patch by vphilippon 2017-11-22: Use pipenv cache path.
  # from pip9.utils.appdirs import user_cache_dir
  from pipenv.environments import PIPENV_CACHE_DIR
  
  # The user_cache_dir helper comes straight from pip itself
  # CACHE_DIR = user_cache_dir(os.path.join('pip-tools'))
  CACHE_DIR = PIPENV_CACHE_DIR
  
  # NOTE
  # We used to store the cache dir under ~/.pip-tools, which is not the
  # preferred place to store caches for any platform.  This has been addressed
  # in pip-tools==1.0.5, but to be good citizens, we point this out explicitly
  # to the user when this directory is still found.
  LEGACY_CACHE_DIR = os.path.expanduser('~/.pip-tools')
  
  if os.path.exists(LEGACY_CACHE_DIR):
      secho('Removing old cache dir {} (new cache dir is {})'.format(LEGACY_CACHE_DIR, CACHE_DIR), fg='yellow')
      rmtree(LEGACY_CACHE_DIR)
  