Today when trying to dup, I get the following issue
Problem: 1: nothing provides ‘libtheora0-32bit’ needed by the to be installed steam-1.0.0.82-3.1.x86_64
Solution 1: deinstallation of steam-1.0.0.82-5.1.x86_64
Solution 2: keep obsolete steam-1.0.0.82-5.1.x86_64
Solution 3: break steam-1.0.0.82-3.1.x86_64 by ignoring some of its dependencies