For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:slavoutich/openSUSE_Tumbleweed/home:slavoutich.repo
zypper refresh
zypper install sway-services
For openSUSE Factory ARM run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:slavoutich/openSUSE_Factory_ARM/home:slavoutich.repo
zypper refresh
zypper install sway-services
For 15.6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:slavoutich/15.6/home:slavoutich.repo
zypper refresh
zypper install sway-services