>>> Configuring source in /var/tmp/portage/net-libs/nodejs-0.10.30/work/node-v0.10.30 ... Traceback (most recent call last): File "configure", line 14, in <module> from gyp.common import GetFlavor File "tools/gyp/pylib/gyp/__init__.py", line 8, in <module> import gyp.input File "tools/gyp/pylib/gyp/input.py", line 15, in <module> import multiprocessing ImportError: No module named multiprocessing * ERROR: net-libs/nodejs-0.10.30::gentoo failed (configure phase): * (no error message) I decided as a guess to try recompiling python:2.7 with USE=threads, and that made it work.
Please test https://github.com/gentoo/gentoo-portage-rsync-mirror/pull/118
Fixed in nodejs-0.12.2-r2.