[gentoo-user] dependency miracle - please help

[Helmut Jarausch]

Hi,

again, portage's dependencies caculation makes me wonder.

This time, 
emerge  --update --newuse --deep @system @world

tells me quite a few dependencies like
 *   ~x11-libs/qt-core-4.5.1 pulled in by:
 *     x11-libs/qt-4.5.1

I do have x11-libs/qt-core-4.5.2 and x11-libs/qt-4.5.2 installed.
How can I find out which package is pulling x11-libs/qt-4.5.1 in ?

Many thanks for a hint.
(I have portage-2.2_rc40 installed here)
Helmut.

-- 
Helmut Jarausch

Lehrstuhl fuer Numerische Mathematik
RWTH - Aachen University
D 52056 Aachen, Germany