evolution-kolab is a plugin to enable evolution to connect to the kolab groupware. There is no ebuild yet. Sources can be optained from: http://ftp.gnome.org/pub/GNOME/sources/evolution-kolab/
Thanks, gnome-extra/evolution-kolab-3.4.3 has been added to portage. >*evolution-kolab-3.4.3 (13 Aug 2012) > > 13 Aug 2012; Alexandre Rostovtsev <tetromino@gentoo.org> > +evolution-kolab-3.4.3.ebuild, > +files/evolution-kolab-3.4.3-no-hello-world.patch, > +files/evolution-kolab-3.4.3-no-tests.patch, +metadata.xml: > New ebuild for the Evolution Kolab groupware plugin (bug #427120, thanks to > riepernet).