sip_configure.py currently relies on pyqtconfig which is deprecated since pyqt4 4.10 (cf. the official documentation), and is likely to be removed (unless pyqt4 was packaged with the legacy script, more information here).

This was detected while trying to compile rviz on Arch Linux with pyqt4 4.11 (cf. ros-visualization/rviz#785), since pyqtconfig is no longer available (cf. this bug report).

This update could go to an indigo branch, based on the pyqt4 versions of targeted Ubuntu distributions.