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List:       gentoo-dev
Subject:    Re: [gentoo-dev] Fw: [gentoo-commits] gentoo-x86 commit in app-backup/bacula:
From:       "Jorge Manuel B. S. Vicetto" <jmbsvicetto () gentoo ! org>
Date:       2010-07-23 12:30:35
Message-ID: 4C498B6B.5040700 () gentoo ! org
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On 23-07-2010 11:37, Ciaran McCreesh wrote:
> On Fri, 23 Jul 2010 13:30:02 +0200
> Thomas Beierlein <tomjbe@gentoo.org> wrote:
>>>> interesting. I did not know that an ebuild can use-depend on
>>>> itself. Good to know.
>>>
>>> No, not good. It doesn't make any sense.
> 
>> Can you give some reasoning for that?
> 
> It's entirely unclear what deps upon self actually mean. Some people
> use them to say that a package needs to be installed before it can
> install itself. Thus, things like:
> 
>     DEPEND="|| ( myself myself-bin )"
> 
> So a dependency upon myself[foo] would probably mean "I need
> myself[foo] to be installed before I can install myself", not "I need
> the foo flag to be set on myself".

In this case the dependencies are clear. They're not pretty, but they're
clear.

> In any case, abusing DEPEND isn't a mechanism for implementing use
> requirements. You should use the mechanism that's designed for use
> requirements to do use requirements, which means waiting for EAPI 4
> and pkg_pretend, or just follow existing policy and pick one in the
> case of a conflict.

Abusing depend is a good way to do this, until we get better tools. I
have to agree with Brian's proposal and say that in this particular
case, the best solution is required_use and not pkg_pretend.

- -- 
Regards,

Jorge Vicetto (jmbsvicetto) - jmbsvicetto at gentoo dot org
Gentoo- forums / Userrel / Devrel / KDE / Elections
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