Para openSUSE Factory ARM execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/server:messaging/openSUSE_Factory_ARM/server:messaging.repo
zypper refresh
zypper install purple-hangouts
Para openSUSE Factory execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/server:messaging/openSUSE_Factory/server:messaging.repo
zypper refresh
zypper install purple-hangouts
Para 15.6 execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/server:messaging/15.6/server:messaging.repo
zypper refresh
zypper install purple-hangouts