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To: gentoo-dev@g.o
From: Pacho Ramos <pacho@g.o>
Subject: Re: Suggestion to drop "pcre" from default enabled USE flags in profiles
Date: Wed, 06 Jun 2012 21:18:40 +0200
El mié, 06-06-2012 a las 14:53 -0400, Mike Frysinger escribió:
> On Wednesday 06 June 2012 14:06:47 Pacho Ramos wrote:
> > The problem is that grep keeps linked against libpcre and it can cause
> > problems like pointed in referred bug report, and it's really risky as
> > people can have their portage completely broken for example when libpcre
> > is downgraded for some reason. That doesn't sound like a good *default*
> > behavior for me
> 
> there are plenty of core tools that can be broken by other packages forcing 
> broken behavior like library downgrades.  

I know that, but I am simply trying to get safer values that could help
to minimize the risk a bit and, since enabling pcre system wide didn't
look (and still don't look) really needed to me, I asked to stop
enabling it to prevent this exact risk that looks major enough to me

> and FEATURES=preserve-libs would 
> gracefully handle this.
> 
> off the top of my head, lib dependencies that can bring a system down:
>  - bash links against ncurses & readline
>  - sed links against acl
>  - coreutils links against acl/libcap/selinux/gmp
>  - grep links against pcre
> (with at least USE=acl being a profile default)
> 
> so highlighting the grep/pcre dep doesn't seem like it accomplishes much
> -mike

I am not trying to reach the safest and unbreakable update path that
won't ever fail as explained at top ;)
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References:
Suggestion to drop "pcre" from default enabled USE flags in profiles
-- Pacho Ramos
Re: Suggestion to drop "pcre" from default enabled USE flags in profiles
-- Mike Frysinger
Re: Suggestion to drop "pcre" from default enabled USE flags in profiles
-- Pacho Ramos
Re: Suggestion to drop "pcre" from default enabled USE flags in profiles
-- Mike Frysinger
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Updated Jun 29, 2012

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