Re: [gentoo-dev] Eclass assisted multilib dependent cache updates

[Alexis Ballier <aballier@gentoo.org>]

On Sat, 02 Jan 2016 16:54:31 +0100
Gilles Dartiguelongue <eva@gentoo.org> wrote:

> Hello all,
> 
> while working on bug #518422, I found out that while eclass calls the
> relevant cache updates it has no idea whether or not it is called in a
> multilib context or not.

Hmm... what's the problem here ?
What you seem to call "not a multilib context" is a multilib build with
only one ABI. That's one of the points of inheriting the
multilib eclasses.

> Imho, this leads to avoidable human errors where one thinks eclass
> will take care of lib dependent caches, which it does, but not for all
> enabled ABIs which could lead to reduced functionality for non-native
> ABIs.
> 
> While it seems reasonable to call multilib_foreach_abi
> gnome2_pkg_postinst for multilib enabled ebuilds, it is still not
> ideal as it will call a lot of functions for no good reason. On the
> other hand, checking environment variable set by multilib eclasses
> does not seem like a robust solution.
> 
> Is there any reasonable way to make phase functions aware of if they
> are running in a multilib enabled ebuild to adjust their behavior ?


Per the above, 'multilib_foreach_abi' seems just fine. Is there a real
problem with it?