Comment # 1 on bug 1234691 from Stefan Hundhammer

That information is easily obtainable from /var/log/YaST/y2log (the UI
versions) or from

  rpm -qa "libyui*"
  rpm -qa "yast2*"

There is no need to clutter the UI with it, even less so since YaST consists of
several dozen packages; and it's of very limited use to almost all users.