package unknown_horizones/ fife depents on old libboost_system.so
Starting unknown_horizont breaks with
[user@pc ~]$ unknown-horizons Failed to use FIFE from <module 'fife' from '/usr/lib/python2.7/site-packages/fife/init.py'> libboost_system.so.1.65.0: cannot open shared object file: No such file or directory Failed to find and/or load FIFE.
It seems to me, fife will use a older libboost_system. libboost_system is updated to libboost_system.so.1.66.0 and the file under /lib is labeled accordingly.