dev-lang emerges on my system fine and appears to work perfectly.
Warning: dev-lang/yap does not merge with FEATURES="multilib-strict". I'm finished for the evening, so if someone fixes the library path issue, it will speed us all up greatly.
I've committed a multilib patch to dev-lang/yap-5.1.1. Let me know how you fare. Keri
Closing. dev-lang/yap-5.1.1 compiles and installs ok with multilib-strict on pitr. It passes a series of prolog tests; consequently I've KEYWORDED it ~amd64. Keri.