rubygem-mustermann from devel:languages:ruby:extensions project
Sty agraw n unessmres nnek/m
Add repository and install manually
For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/devel:languages:ruby:extensions/openSUSE_Tumbleweed/devel:languages:ruby:extensions.repo zypper refresh zypper install rubygem-mustermann