PYTHON_VIRTUALENV_URL =
  "https://files.pythonhosted.org/packages/51/aa" \
  "/c395a6e6eaaedfa5a04723b6446a1df783b16cca6fec66e671cede514688" \
  "/virtualenv-16.4.0.tar.gz".freeze
PYTHON_VIRTUALENV_SHA256 =
  "cceab52aa7d4df1e1871a70236eb2b89fcfe29b6b43510d9738689787c513261".freeze