With the current naming and description the package names app-emulation/virtualbox-additions app-emulation/virtualbox-guest-additions do not reflect the difference clearly. A rename of app-emulation/virtualbox-additions to app-emulation/virtualbox-guest-additions-bin would be well aligned with the current distinction at app-emulation/virtualbox app-emulation/virtualbox-bin Thanks!
app-emulation/virtualbox-additions and app-emulation/virtualbox-guest-additions are completely different packages for completely different purposes.
(In reply to comment #1) > app-emulation/virtualbox-additions and > app-emulation/virtualbox-guest-additions are completely different packages > for completely different purposes. To a non-expert the two names and descriptions can be quite confusion. I still fail to figure it out from just that data. Especially the description CD image containing guest additions for VirtualBox ^^^^^ of app-emulation/virtualbox-additions makes the two packages rather confusing. There must be something we can do, right?
+ 18 Jun 2013; Lars Wendler <polynomial-c@gentoo.org> + virtualbox-guest-additions-4.1.24.ebuild, + virtualbox-guest-additions-4.1.26.ebuild, + virtualbox-guest-additions-4.2.10.ebuild, + virtualbox-guest-additions-4.2.12.ebuild: + Changed DESCRIPTION to make clear what purpose this package has (bug + #372475). + Should be fixed now.