allow people to disambiguate built_with_use in upgrade situations

Diego is proposing a new flag to built_with_use to handle
the corner case 
where you query a package that does not have the requested
flag in IUSE

built_with_use [--missing <action>] ...

so in the case of version transitions, you can specify the
<action> as either 
true, false, or die (only current option)

seems like a cleaner solution than forcing what can be a
rats nest of 
has_version checks
-mike

On Tue, 2007-01-16 at 19:06 -0500, Mike Frysinger wrote:
> Diego is proposing a new flag to built_with_use to
handle the corner case 
> where you query a package that does not have the
requested flag in IUSE
> 
> built_with_use [--missing <action>] ...
> 
> so in the case of version transitions, you can specify
the <action> as either 
> true, false, or die (only current option)
> 
> seems like a cleaner solution than forcing what can be
a rats nest of 
> has_version checks
> -mike


I'd agree. The built_with_use is a thorn in the side with
the existing
behavior. Adding --missing yes|no 0|1 would be nice.



-- 
Ned Ludd <solargentoo.org>
Gentoo Linux

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