On Mon, 17 Dec 2012 01:28:22 +0100
Michał Górny <mgorny@gentoo.org> wrote:

> The EAPIs before '5' have USE_EXPAND flags in implicit IUSE, therefore
> making it impossible to use '(+)' and '(-)' deps on them. This problem
> can be noticed in Paludis (bug #447524) [1].
> 
> [1]:https://bugs.gentoo.org/show_bug.cgi?id=447524

Please forget about the patches. My late-night logic had a major flow.

The nature of the issue is that all dependent packages have to be
EAPI=5. Therefore, we effectively need to make whole python-r1 require
EAPI=5.

If nobody objects, I'll:

a) add a verbose warning when python-r1 is used with EAPI=4,

b) bump all packages to EAPI=5 (the stable ones preferably with a ping
to the arch team),

c) after a few days, replacing the warning with a fatal error.

-- 
Best regards,
Michał Górny