rubygem-yast-rake from YaST:openSUSE:42.2 project
Select Your Operating System
Add repository and install manually
For openSUSE Leap 42.2 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/YaST:openSUSE:42.2/openSUSE_Leap_42.2/YaST:openSUSE:42.2.repo zypper refresh zypper install rubygem-yast-rake