Both sip-4.14.3 and dev-python/PyQt4-4.9.6 support Python 3.3 (just tested), so ebuilds should mention PYTHON_TARGETS="python3_3"
Thanks, fixed in CVS. + 04 Feb 2013; Michael Palimaka <kensington@gentoo.org> -sip-4.14.2-r1.ebuild, + sip-4.14.3.ebuild: + Use run_in_build_dir. Add python-3.3 support wrt bug #455020. Remove old. + 04 Feb 2013; Michael Palimaka <kensington@gentoo.org> PyQt4-4.9.6-r2.ebuild: + Use run_in_build_dir. Add python-3.3 support wrt bug #455020.
*** Bug 455616 has been marked as a duplicate of this bug. ***