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To: gentoo-dev@g.o
From: "Andreas K. Huettel" <dilfridge@g.o>
Subject: Re: Feature request: package.use.stable.mask and package.use.stable.force
Date: Fri, 27 Apr 2012 19:55:54 +0200
Am Freitag 27 April 2012, 17:26:48 schrieb Zac Medico:
> > 
> > Maybe I'm missing something, but what would happen when the newest
> > version of a package is marked stable? The masked USE flags would
> > become unavailable for everyone?
> 
> In order to be practical, I guess we'd have to add a constraint which
> says that if KEYWORDS contains the stable variant of a particular
> keyword, then it should also be considered to implicitly contain the
> unstable variant when the package manager is deciding whether or not to
> apply package.use.{mask,force}.
> 
> So, here's a description of the whole algorithm that I'd use:
> 
> 1) Let EFFECTIVE_KEYWORDS equal the set of values contained in KEYWORDS,
> plus ** and all the unstable variants of the stable values contained in
> KEYWORDS. For example:
> 
>    KEYWORDS="~amd64 x86" -> EFFECTIVE_KEYWORDS="~amd64 x86 ** ~x86"
> 
> 2) Intersect EFFECTIVE_KEYWORDS with effective ACCEPT_KEYWORDS, where
> effective ACCEPT_KEYWORDS includes any relevant values from
> package.accept_keywords. For example, here is a table of intersections
> of EFFECTIVE_KEYWORDS="~amd64 x86 ** ~x86" with various effective
> ACCEPT_KEYWORDS values:
> 
>       ACCEPT_KEYWORDS  |  INTERSECTION  |  package.stable
>      -----------------------------------------------------
>       x86              |  x86           |  yes
>       x86 ~x86         |  x86 ~x86      |  no
>       **               |  **            |  no
>       amd64 ~amd64     |  ~amd64        |  no
> 
> 3) Apply package.stable settings if INTERSECTION contains only stable
> keywords. For example, see the package.stable column in the table above.


That is the best description I've seen so far, which exactly describes the use 
case that I had in mind.  +1 :)


-- 

Andreas K. Huettel
Gentoo Linux developer 
dilfridge@g.o
http://www.akhuettel.de/

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References:
Feature request: package.use.stable.mask and package.use.stable.force
-- Andreas K. Huettel
Re: Feature request: package.use.stable.mask and package.use.stable.force
-- Ulrich Mueller
Re: Feature request: package.use.stable.mask and package.use.stable.force
-- Zac Medico
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Updated Jun 29, 2012

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