On Wed, 11 Mar 2009 10:55:52 +0100 Luca Barbato wrote: > The ebuild itself has some embedded information so portage > could/should provide something like. > > [ebuild U ] sys-devel/gcc-4.4.0_pre20090310 [from svn master > r12345] That claim right there is enough to show that you haven't thought about this at all. Your proposal is lots of handwaving magic, most of it unimplementable. I suggest you put together a reference implementation before promoting this idea any further. -- Ciaran McCreesh