Как собрать kde-base/quanta?

Установлен KDE 4.2.3
Пытаюсь собрать quanta и получаю конфликт kdelibs

root [~]# emerge -pv kde-base/quanta
----------------cut-----------------
[ebuild  N    ] kde-base/quanta-3.5.9  USE="-arts -debug -doc -kdeenablefinal -kdehiddenvisibility -xinerama" 6,101 kB
[blocks B     ] <kde-base/kdelibs-3.5.10 ("<kde-base/kdelibs-3.5.10" is blocking kde-base/kdelibs-4.2.3)
[blocks B     ] kde-base/kde-env ("kde-base/kde-env" is blocking kde-base/kdelibs-3.5.9-r4)
[blocks B     ] <kde-base/kdelibs-3.5.10-r3 ("<kde-base/kdelibs-3.5.10-r3" is blocking kde-base/kde-env-4.2.3)

Total: 2 packages (1 downgrade, 1 new), Size of downloads: 6,101 kB
Conflict: 3 blocks (3 unsatisfied)

 * Error: The above package list contains packages which cannot be
 * installed at the same time on the same system.

  ('ebuild', '/', 'kde-base/kdelibs-3.5.9-r4', 'merge') pulled in by
    kde-base/kdelibs:3.5 required by world
    ~kde-base/kdelibs-3.5.9 required by ('ebuild', '/', 'kde-base/quanta-3.5.9', 'merge')

  ('installed', '/', 'kde-base/kdelibs-4.2.3', 'nomerge') pulled in by
    >=kde-base/kdelibs-4.2.3[-kdeprefix] required by ('installed', '/', 'kde-base/ktimetracker-4.2.3', 'nomerge')
    >=kde-base/kdelibs-4.2.3[-kdeprefix] required by ('installed', '/', 'kde-base/kweather-4.2.3', 'nomerge')
    >=kde-base/kdelibs-4.2.3[-kdeprefix] required by ('installed', '/', 'kde-base/kiconfinder-4.2.3', 'nomerge')
    (and 234 more)