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To: gentoo-alt@g.o
From: Fabian Groffen <grobian@g.o>
Subject: Re: portage modifications for prefix
Date: Thu, 5 May 2011 10:05:21 +0200
On 05-05-2011 09:59:01 +0200, Burcin Erocal wrote:
> I am trying to automate the bootstrapping process for gentoo-prefix as
> much as possible, partly based on the instructions here:
> 
> http://dev.gentoo.org/~darkside/prefix/gentoo/bootstrap-gentoo.xml
> 
> However, I want this to work on linux flavors other than gentoo and the
> python-2.6 requirement of portage is causing problems.

This is why we bootstrap python-2.6 on all non-Linux platforms.  Check
the Solaris bootstrap guide for a much less-optimistic bootstrap
procedure.

> One way to work around this is to use one of the portage variants
> at least for the bootstrap stage. AFAICT, pkgcore seems to support
> python-2.4.

Prefix support is defined in PMS as EAPI-3.  The "reference"
implementation, is the Prefix portage "prefix" branch [1], which does
much more than is documented in PMS, to 1) ease transition for Prefix
users (it e.g. defines EPREFIX and friends for *all* EAPIs) and 2) check
all kinds of conditions that only make sense in an offset environment.

> Is there a list of modifications that were merged in portage to get it
> to work with the prefix tree? How much work would it be to make pkgcore
> or paludis support these?

You probably want to look at prefix-launcher (I don't know the
intrinsics of this thing), and you might want to check what the
gentoo/openbsd team is doing currently to automate their OpenBSD
bootstrap.


[1] http://prefix.gentooexperimental.org:8000/portage-prefix/graph/
(there is also the portage.git tree on git.overlays.gentoo.org)

-- 
Fabian Groffen
Gentoo on a different level


References:
portage modifications for prefix
-- Burcin Erocal
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Updated Jun 18, 2012

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