For openSUSE Factory ARM run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:anicka/openSUSE_Factory_ARM/home:anicka.repo
zypper refresh
zypper install pidgin-plugin-rocketchat
For openSUSE Factory run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:anicka/openSUSE_Factory/home:anicka.repo
zypper refresh
zypper install pidgin-plugin-rocketchat
For 15.5 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:anicka/15.5/home:anicka.repo
zypper refresh
zypper install pidgin-plugin-rocketchat