Re: [gentoo-dev] Making built_with_use die by default with EAPI 2

[Petteri Räty]

David Leverton kirjoitti:
> On Saturday 20 September 2008 18:15:27 Alexis Ballier wrote:
>> I can think of checks like:
>> - foo is a dep/rdep of bar
>> - foo has a "plugin like" architecture
>> - bar will "work" with minimal foo
>> - most people will expect some features in bar that come with foo's
>> plugins
>> - we might want to display warnings for the most useful features
>> - having useflags in bar for each of foo's useflags doesn't seem wise
>
> If you mean something like
>
>     built_with_use cat/foo coolfeature || ewarn "bar will be more useful if
> you rebuild cat/foo with USE=coolfeature"
>
> then you can use
>
>     has_version 'cat/foo[coolfeature]' || ...
>
> instead.
>

What does this report if cat/foo does not have coolfeature use flag in 
some version? Meaning can this support cases which need --missing true.

Regards,
Petteri