celestial evdev-driver-0.2 # emerge --pretend --update kdebase

These are the packages that I would merge, in order:

Calculating dependencies ...done!
[ebuild     U ] dev-db/mysql-5.0.16-r3 [5.0.16-r2] 
[ebuild     U ] dev-libs/cyrus-sasl-2.1.21-r2 [2.1.21-r1] 
[ebuild  NS   ] kde-base/arts-3.5.0  
[ebuild  NS   ] kde-base/kdelibs-3.5.0  
[ebuild  N    ] kde-base/kdebase-3.5.0