Re: [gentoo-portage-dev] Latest version vs specific version

[Marius Mauch]

Andrea Carpani wrote:
> Hi all. Here's my problem.
>
> I'm using a lot binary packages of "in portage" and "custom created"
> ebuilds. I have a "virtual" ebuild I use that contains only dependencies
> and I use this one to merge given versions of packages all in one shot:
> sort of a shanpshot of a given moment in time (sort of tag).
>
> Eg:
>
> virtual-1.0.ebuild contains
>
> RDEPEND="
> a-2.0.ebuild
> b-3.0.ebuild
> c-4.0.ebuild
> d-5.0.ebuild
> "
>
> So that emerge -K virtual-1.0 emerges all a,b,c,d on given versions and:
>
> virtual-2.0.ebuild contains
>
> RDEPEND="
> a-2.1.ebuild
> b-3.1.ebuild
> c-4.1.ebuild
> d-5.1.ebuild
> "
>
> My problem is that if a-2.0.ebuild and a-2.1.ebuild contain
>
> RDEPEND="
>
>>c-1.0
>
> "
>
> and I have binary packages for both c-4.0 and c-4.1 when I emerge
> virtual-2.0.ebuild i get c-4.1.ebuild but if I emerge virtual-1.0 I get
> both c-4.0 (required as a dependency for virtual-1.0) and c-4.1 (as a
> dep for a-2.0 who gets the latest c even though c-4.0 would have
> satisfied the dependency.
>
> Any info on how to avoid this?

It might be helpful if you'd post a real example and not some invalid 
pseudo-ebuild syntax.

Marius
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