akonadi (with use mysql?) (at least default configuration) will not be able to start without having mysql being built with innodb. I recommend requiring mysql being built with innodb use flag. Reproducible: Always
Created attachment 180510 [details] app-office-akonadi-server-requires-mysql-w-innodb.patch akonadi-server will not be able to start if mysql is not built with innodb, this fixes the RDEPENDS to accomodate that. Gentoo Bug # 257144
The mysql 4.* and 5.* versions in portage do not have an innodb use-flag. The eclass add this in 5.1.* but this is not in portage. So that patch kind of breaks the tree.
Created attachment 181116 [details] app-office-akonadi-server-requires-mysql-w-innodb.patch hmm... I thought 5.0 did have the innodb use flag, my bad. This should fix the problem.
this was a problem with all 5.1 builds due to a bug in the mysql.eclass see bug 194561 for more details resolving fixed.