Re: [gentoo-pms] Clarification of has_version cat/pkg[use=] behavior for EAPI 3 or 4

[Ciaran McCreesh]

On Sat, 12 Sep 2009 20:41:59 +0300
Petteri Räty <betelgeuse@g.o> wrote:
> Currently Portage does not work with has_version cat/pkg[use=]. I
> filed a bug about this:
> https://bugs.gentoo.org/show_bug.cgi?id=284715
>
> Portage current behavior:
> 17:38 <@zmedico> Betelgeuse: quick test seems to show always true if
> it's in IUSE
>
> I see a couple course of possible actions:
> 1. Current PMS already implies this behavior and Portage is buggy.
> Let's document this explicitly for EAPI 3 and have Portage fixed so
> using EAPI 3 makes sure this syntax works.

The wording is "The flag must be enabled if the flag is enabled for the
package with the dependency, or disabled otherwise.".

The question then is whether that applies only to *DEPEND, or whether
it's to anywhere where there's a "package with the dependency". Given
that the section that specifies it isn't limited to *DEPEND, but
describes dependency specifications in general, I'd say that PMS
requires it to be supported.

Having said that, it's pretty horrible, and unless there's a good use
case for such a feature, I'd not be opposed to shoving in a retroactive
ban on it...

-- 
Ciaran McCreesh