Re: [gentoo-dev] Re: Removal of kdeprefix news item

[Alec Warner <antarus@gentoo.org>]

On Thu, May 19, 2011 at 2:49 AM, Jonathan Callen <abcd@gentoo.org> wrote:
> Ulrich Mueller wrote:
>
>>>>>>> On Wed, 18 May 2011, Jonathan Callen wrote:
>>
>>> Display-If-Installed: kde-base/kdelibs[kdeprefix]
>>
>> I don't think that USE dependencies (or any other EAPI specific
>> features) are allowed here.
>
> The GLEP does not make any meantion as to whether it is legal to use
> USE dependencies here.  I have, however, tested with portage and
> portage itself Does The Right Thing when faced with a USE dep in
> Display-If-Installed.

reading the code for the version of portage I have installed:

The NewsManager will call Isvalid on each news item and each news item
will scan its restrictions for 'valid-ness' and report that upward. So
if we are lucky, on old versions of portage, portage.isvalidatom will
report the USE-dep as an invalid atom and portage will print mean
errors messages about 'invalid news items' but will not throw up (in
theory).

>
>>> run: emerge --oneshot $(qlist -IC kde-base/)
>>
>> Is it guaranteed that your users have portage-utils installed?
>> Otherwise the qlist command may not be available.
>>
>
> I had thought that we depended on this, but I was mistaken (the
> dependency was pulled in via pambase).  I guess we could just use
> `emerge --update --deep --newuse @world` (and yes, @world is available
> in stable portage).
>
> --
> Jonathan Callen
>
>