# emerge -a1 plex-media-server These are the packages that would be merged, in order: Calculating dependencies - !!! Problem resolving dependencies for media-tv/plex-media-server ... done! !!! The ebuild selected to satisfy "plex-media-server" has unmet requirements. - media-tv/plex-media-server-1.25.2.5319::media-kit USE="-avahi -system-openssl" PYTHON_SINGLE_TARGET="-python2_7" PYTHON_TARGETS="python2_7" The following REQUIRED_USE flag constraints are unsatisfied: python_single_target_python2_7 The above constraints are a subset of the following complete expression: exactly-one-of ( python_single_target_python2_7 )