As part of test day I wanted to install engine 3.4.0-0.5.beta1.fc20 from ovirt-3.4.0-prerelease and I can see following info: Transaction check error: file /usr/lib/python2.7/site-packages/sos/plugins/postgresql.py conflicts between attempted installs of ovirt-log-collector-3.4.0-0.1.beta1.fc20.noarch and sos-3.0-3.fc20.noarch file /usr/lib/python2.7/site-packages/sos/plugins/postgresql.pyc conflicts between attempted installs of ovirt-log-collector-3.4.0-0.1.beta1.fc20.noarch and sos-3.0-3.fc20.noarch file /usr/lib/python2.7/site-packages/sos/plugins/postgresql.pyo conflicts between attempted installs of ovirt-log-collector-3.4.0-0.1.beta1.fc20.noarch and sos-3.0-3.fc20.noarc Thanks, Piotr