Doing a from scratch build of 1.4_rc1 with ~x86, build dies due to lack of perl trying to get sys-devel/automake-1.6.3, but sys-devel/perl-5.8.0-r7 requires automake. When I emerge sys-devel/perl-5.6.1-r10 first, I do not need automake, so you just need to add that series of perl to the automake ebuilds so people don't end up getting stuck. Without ~x86, this does not occur, so it's just a small snag for those of us who are really bleeding edge. In short: sys-devel/perl-5.6.1-r10 -> sys-devel/automake-1.6.3 -> sys-devel/perl-5.8.0-r7 :) Happy hacking.
Thanks for the pointer. I've added the depend to both the 5.6.1 and 5.8.0 ebuilds.
Okay, I guess that's that.