llvm-3.3 is ancient and on its way to being removed. Please either bump llvmpy if possible, patch llvm-3.5+ in or lastrite it.
llvmpy has a dead upstream (llvmlite is the new hotness), so lastriting probably makes the most sense.
This would also require removing dev-python/llvmmath and dev-python/pykit which are maintained by science team.
feel free to lastrite llvmmath and pykit at the same time, they are dead as well.
Package removed. https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=2ed0fc2889b8ee3c1b6b9a2899d09896455976d4