Reinstalling Django warning doesn't mention django-admin

[mdc@…]

Hello,

Thank you for developing django. When I install it from source on my Mac, the line that states something like copying django-admin.py from build/blahblahblah to /usr/local/bin/ doesn't do this if there is already a django-admin.py already installed. You might put that in the documentation if a current version of django is sensed. Thanks,

-Mac

[Tim Graham]

It's not entirely clear to me what you are requesting. We ​recommend uninstalling any old versions of Django before installing a new one.

[mdc@…]

Add the link: ​https://docs.djangoproject.com/en/dev/topics/install/#remove-any-old-versions-of-django and a message regarding copied files to local bin or remove this message completely and just leave the link.

As is, the warning is incomplete.

========
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.

[rjasjukaitis]

How did you installed/upgraded Django?

[mdc@…]

git clone ​https://github.com/django/django.git

Then sudo python setup.py install

[Aymeric Augustin]

I'm accepting the ticket with the following scope:

• attempt to detect an existing django-admin.py and add a specific warning for this case.
• if that isn't doable, extend the warning to mention django-admin.py which may be installed outside of %(existing_path)s.

[Tim Graham]

Since virtual environments are recommended and installing Django system-wide is uncommon, this seems obsolete.