Please consider adding a useflag for openbox to have it enable the use of startup-notification.
Created attachment 49151 [details] ebuild with local useflag for startup-notification This works as expected for me.
SuperLag, what happened to adding yourself to commonbox and maintaining openbox? If you're not going to follow through, you need to let us know.
Added support for startup notification. Keyworded ~ on all arches, for now. ka0ttic, sorry man. metadata.xml is straightened out. I heard herds.xml wasn't necessary to edit though, so that is untouched.