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Date: Fri, 15 Jun 2007 11:54:19 +0200
From: Vlastimil Babka <caster@gentoo.org>
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To:  gentoo-dev@lists.gentoo.org
Subject: Re: [gentoo-dev] EAPI-1 (or >1, perhaps) Proposal:  AND Dependencies
References: <4671DCEF.7080009@gmail.com> <46725CF5.1000601@gentoo.org>
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Marijn Schouten (hkBst) wrote:
> John R. Graham wrote:
>> What I'd really like to be able to code is a range with an AND operator,
>> something like this
>>     ( && >=some-cat/foo-4.0 <some-cat/foo-4.3 )
> 
> AND is already the implicit combinator. Thus simply listing both these atoms
> gives what you want:
> 
> >=some-cat/foo-4.0
> <some-cat/foo-4.3

Not always, AFAIK Imagine there's some 3.x versions in slot 3, 4.x in
slot 4, 5.x in slot 5. With this atoms you could end up with both 3.x
and 5.x installed, and no 4.x :) It doesn't try to satisfy both atoms
with one version.

> Still a special syntax for ranges seems like a good idea. If only portage
> would not upgrade past such specifications (and downgrade the next time).

IIRC upgrade/downgrade loops were already solved in some recent version?
Now it spits some error about conflicting deps that cause that.
- --
Vlastimil Babka (Caster)
Gentoo/Java
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