After updating to dev-python/sip-4.9.3-r1 mnemosyne fails to start and prints the following message: $ mnemosyne Traceback (most recent call last): File "/usr/bin/mnemosyne", line 11, in <module> from qt import * RuntimeError: the sip module implements API v6.0 but the qt module requires API v5.0 Downgrading to dev-python/sip-4.8.2 resolves the problem. I tried revdep-rebuild and followed the sip-message: * Messages for package dev-python/sip-4.9.3-r1: * When updating sip, you usually need to recompile packages that * depend on sip, such as PyQt4 and qscintilla-python. If you have * app-portage/gentoolkit installed you can find these packages with * `equery d sip` and `equery d PyQt4`. Steps to reproduce (without ~x86-Keyword): 1. Install app-misc/mnemosyne 2. Update dev-python/sip
nah *** This bug has been marked as a duplicate of bug 307513 ***