对于 16.0，请以根用户 root 运行下面命令：
zypper addrepo https://download.opensuse.org/repositories/home:andreas.osterburg:Radicale/16.0/home:andreas.osterburg:Radicale.repo
zypper refresh
zypper install Radicale
对于 15.6，请以根用户 root 运行下面命令：
zypper addrepo https://download.opensuse.org/repositories/home:andreas.osterburg:Radicale/15.6/home:andreas.osterburg:Radicale.repo
zypper refresh
zypper install Radicale
对于 15.5，请以根用户 root 运行下面命令：
zypper addrepo https://download.opensuse.org/repositories/home:andreas.osterburg:Radicale/15.5/home:andreas.osterburg:Radicale.repo
zypper refresh
zypper install Radicale