+ os << "<resolver>";
+ os << " fixsystem = " << _fixsystem << endl;
+ os << " allowdowngrade = " << _allowdowngrade << endl;
+ os << " allowarchchange = " << _allowarchchange << endl;
+ os << " allowvendorchange = " << _allowvendorchange << endl;
+ os << " allowuninstall = " << _allowuninstall << endl;
+ os << " updatesystem = " << _updatesystem << endl;
+ os << " allowvirtualconflicts = " << _allowvirtualconflicts << endl;
+ os << " noupdateprovide = " << _noupdateprovide << endl;
+ os << " dosplitprovides = " << _dosplitprovides << endl;
+ os << " onlyRequires = " << _onlyRequires << endl;
+ return os << "<resolver/>" << endl;