Use zypper --force-resolution to install patterns.

Avoids zypper asking back (and using 'cancel' as the default answer)
in cases like:

 Problem: ... requires ..., but this requirement cannot be provided
   uninstallable providers: ...
  Solution 1: Following actions will be done:
   do not install ...
  Solution 2: replacement of .. with ...
  Solution 3: break ... by ignoring some of its dependencies
 Choose from above solutions by number or cancel [1/2/3/c] (c): c