django/setup.py at main · django/django

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	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})

django / django Public