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Date: Sun, 20 Sep 2009 22:55:55 +0530
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Subject: Re: [gentoo-dev] Stabilization of Python 3.1
From: Nirbheek Chauhan <nirbheek@gentoo.org>
To: gentoo-dev@lists.gentoo.org
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On Sun, Sep 20, 2009 at 9:37 PM, Arfrever Frehtes Taifersar Arahesis
<Arfrever@gentoo.org> wrote:
> which depend on Python 3) wouldn't break any packages and wouldn't require
> to switch main Python interpreter to Python 3.
>

Package X (stable) requires python-2
Package Y (stable) requires python-3

=> User can't use both at the same time.

You're just introducing another form of dependency hell for the users.
They now have to figure out one of the following:

a) Find version of Package X that works with python-3
b) Find which old version of Y still works with python-2
c) Force X/Y to use python-2/3 by patching the interpreter called
d) Give up and install Ubuntu where somehow magically both work at the same time

-- 
~Nirbheek Chauhan

GNOME+Mozilla Team, Gentoo