I've added an overlay to my system in order to get some eeePC related ebuilds. But the problem is that the overlay overrides some ebuilds from the main tree which I don't want to override. Therefore, I'd like to set the priority of the main portage tree higher than the overlay. I've searched for a solution but layman -p doesn't provide the functionality I am looking for and I haven't found other solutions. Of course, I could select and manage single ebuilds by hand but I'd prefer the solution mentioned above.
*** This bug has been marked as a duplicate of bug 185377 ***