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To: gentoo-user@lists.gentoo.org
From: Martin Vaeth <martin@mvath.de>
Subject: [gentoo-user] Re: Moving the portage tree to /var
Date: Sun, 26 Oct 2014 14:02:41 +0000 (UTC)
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References: <4473472.7D6UrCk1jI@wstn> <544BAC39.3050505@libertytrek.org>
 <544BD391.7070102@gentoo.org>
 <201410251849.38932.michaelkintzios@gmail.com>
 <544BE4F0.5080507@gentoo.org>
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Michael Orlitzky <mjo@gentoo.org> wrote:
>
> I haven't bothered with it either, I really like being able to do:
>
>   PORTDIR="$REPOS/gentoo-x86" PORTDIR_OVERLAY="" emerge -1 whatever

Why don't you do emerge -1 whatever::gentoo
Moreover, you can use PORTAGE_REPOSITORIES for temporary overrides
of repos.conf