The following packages have unmet dependencies:
 libkf5configcore5 : Depends: libkf5config-data (= 5.15.0-0ubuntu1) but 5.18.0-0ubuntu1~ubuntu15.10~ppa1 is to be installed
                     Recommends: libkf5config-bin (= 5.15.0-0ubuntu1) but it is not going to be installed