对于 openSUSE Tumbleweed，请以根用户 root 运行下面命令：
zypper addrepo https://download.opensuse.org/repositories/devel:languages:ruby/openSUSE_Tumbleweed/devel:languages:ruby.repo
zypper refresh
zypper install rubygem-gem2rpm
对于 16.0，请以根用户 root 运行下面命令：
zypper addrepo https://download.opensuse.org/repositories/devel:languages:ruby/16.0/devel:languages:ruby.repo
zypper refresh
zypper install rubygem-gem2rpm
对于 15.6，请以根用户 root 运行下面命令：
zypper addrepo https://download.opensuse.org/repositories/devel:languages:ruby/15.6/devel:languages:ruby.repo
zypper refresh
zypper install rubygem-gem2rpm