import os import site import sys from distutils.sysconfig import get_python_lib from setuptools import setup # Allow editable install into user site directory. # See https://github.com/pypa/pip/issues/7953. site.ENABLE_USER_SITE = '--user' in sys.argv[1:] # Warn if we are installing over top of an existing installation. This can # cause issues where files that were deleted from a more recent Django are # still present in site-packages. See #18115. overlay_warning = False if "install" in sys.argv: lib_paths = [get_python_lib()] if lib_paths[0].startswith("/usr/lib/"): # We have to try also with an explicit prefix of /usr/local in order to # catch Debian's custom user site-packages directory. lib_paths.append(get_python_lib(prefix="/usr/local")) for lib_path in lib_paths: existing_path = os.path.abspath(os.path.join(lib_path, "django")) if os.path.exists(existing_path): # We note the need for the warning here, but present it after the # command is run, so it's more likely to be seen. overlay_warning = True break setup() if overlay_warning: sys.stderr.write(""" ======== WARNING! ======== You have just installed Django over top of an existing installation, without removing it first. Because of this, your install may now include extraneous files from a previous version that have since been removed from Django. This is known to cause a variety of problems. You should manually remove the %(existing_path)s directory and re-install Django. """ % {"existing_path": existing_path})