pip 1.4 and pytz break installation of test requirements

[Kevin Christopher Henry]

pip 1.4 isn't installing pytz properly because of how the latter formats its version numbers (see the bug report ​here). This is breaking the installation of the test requirements as suggested in the ​documentation. Specifically, none of the requirements are installed because pip can't find a valid version of pytz.

This could be solved for now by changing the requirements file to read pytz>=2013b (or some other acceptable version), which explicitly authorizes pre-release versions (which is what pip thinks pytz's version numbers represent).

If ignored this bug will presumably fix itself when pytz changes it's version numbers to conform to pip's expectations.

[jcatalan]

While this actually affects django in that the docs suggest to install pytz using pip, I don't think this is a bug that should be solved within django. You can just use a previous version of pip to workaround this while pytz fixes this issue.

I tried for instance with pip 1.1 and it worked.

If this still doesn't solve your problem please let me know and we can reopen this ticket.

Bests,

Juan

[Aymeric Augustin]

On the other hand, it's simple enough to change the requirements files so it actually works with the current version of pip.

[Aymeric Augustin <aymeric.augustin@…>]

In a9589dd280ba84db3131f32b423ef45c67a5a236:

Fixed #21032 -- pip 1.4 can't install pytz.