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To: gentoo-osx@g.o
From: Grobian <grobian@g.o>
Subject: Re: [PREFIX] calling portage within eclass/ebuilds
Date: Fri, 28 Apr 2006 21:59:15 +0200
Hi,

I'm really delighted to see you diving this deep into the code.
Unfortunately I can't really tell you anything useful here.  Kito is the
man with the knowledge here.

As far as the webapp eclass concerns, if I recall correctly, there are
some nasty things going in there, like calling emerge, but I think the
problem you have is sort of generic.


On 28-04-2006 11:45:30 -0700, Christopher Chan wrote:
> Hi all,
> 
> I've been working to get phpBB (along with webapp.eclass & webapp-config) to
> work in prefixed environment.  I've succeeded in getting those things
> working and deployed in prefix, but during that process, I discovered
> problems with scripts or commands that use portage within an ebuild or
> eclass.
> 
> In my case, webapp.eclass uses webapp-config, and it imports portage.  But
> portage sets 'root' from ROOT environment variable and we, in turn, append
> EPREFIX to it.  This does not work within an eclass or ebuild because ROOT
> already has the EPREFIX so webapp-config fails.  I also noticed that
> has_version() eventually calls portageq which has the same problem.
> 
> Has anyone else ran into this scenario?
> 
> In any case, I hacked portage.py to reset root to '/' if ROOT = EPREFIX
> 
> Looks like this:
> if os.environ.has_key("ROOT"):
>         root=os.environ["ROOT"]
> +
> +    ## cchan - HACK for when portage is being called within an
> ebuild/eclass
> +       if root == portage_const.EPREFIX: root="/"
> +        
>         if not len(root):
>                 root="/"
>         elif root[-1]!="/":
> 
> Thoughts from others?
> 
> BTW, I would be happy to submit my work on webapp.eclass, webapp-config, and
> other ebuilds.
> 

-- 
Fabian Groffen
Gentoo for Mac OS X Project
-- 
gentoo-osx@g.o mailing list


References:
[PREFIX] calling portage within eclass/ebuilds
-- Christopher Chan
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Updated Jun 17, 2009

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