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Date: Thu, 26 Nov 2009 11:10:09 +0100
From: Fabian Groffen <grobian@gentoo.org>
To: gentoo-dev@lists.gentoo.org
Subject: Re: [gentoo-dev]  Re: Gentoo Prefix: on EPREFIX, ED and EROOT
 inside ebuilds
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On 26-11-2009 10:01:24 +0000, Duncan wrote:
> > required dependencies for.  Hence, ekeyword should be installed such
> > that it references the perl from the offset installation, e.g.
> > "/home/joe/gentoo/usr/bin/perl".
> > 
> > "/bin/sh" is another nice one.
> 
> At least here, that it would ordinarily be best to reference the prefix 
> system was taken for granted, so when it's "absolutely necessary" to 
> reference the host system is the interesting case, and how I parsed the 
> request.  You provided examples of just the opposite, the case I (and 
> evidently Denis, if I parsed the request correctly) assumed to be normal, 
> where referencing the prefix is strongly desirable or "absolutely 
> necessary".

I see, thanks for bringing that up.  To clarify (I hope this is):

Gentoo Prefix tries to be as much self-sufficient as possible, and hence
applications *must* not reference the host system, unless absolutely
necessary, such as for e.g. /lib/libc.so.

If Gentoo Prefix would not do this, Portage's dependencies would become
useless, and many uncontrollable and unpredictable errors may arise both
at compile time as well as at run time.


-- 
Fabian Groffen
Gentoo on a different level