systemd-portable from home:lnussel:legacyfree project
Select Your Operating System
Add repository and install manually
For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:lnussel:legacyfree/openSUSE_Tumbleweed/home:lnussel:legacyfree.repo zypper refresh zypper install systemd-portable