Marco schrieb:
> On Sat, Jun 27, 2009 at 2:02 PM, Dirk Heinrichs<dirk.heinrichs@online.de> wrote:
>> Am Samstag 27 Juni 2009 15:51:20 schrieb Marco:
>>
>>> How can I remove all the packages in the meta package?
>> No need to do that. It's about the meta package only.
> 
> Just in case I would want to remove all the packages, how could I do
> that? (I'm not doing any qt develoment anyway and I take care not to
> install any software that depends on qt)

If you have eix installed you could use
eix -I --only-names x11-libs/qt |xargs emerge -C

or if you have no package that depends on qt
emerge --depclean -a
after emerge -C x11-libs/qt
should do the job.

You should do
emerge -DuNva world and revdep-rebuild
afterwards to be sure the system is still in clean state.