Marrant pour KDE4, mais "on ne peut pas mettre autre chose" mais gentoo qui est pourtant assez bleeding edge, KDE 4.0.X est marqué :

# Ingmar Vanhassel <ingmar@gentoo.org> (16 Jan 2008)
# Mask KDE 4.0.x for testing. This release of KDE 4 will not be unmasked.
# This is still not intended for mainstream so DO NOT KEYWORD IT without
# talking to the KDE herd first.
# KDE 4 guide: http://www.gentoo.org/proj/en/desktop/kde/kde4.xml