Para openSUSE Tumbleweed execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/Education/openSUSE_Tumbleweed/Education.repo
zypper refresh
zypper install anki
Para 15.6 execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/Education/15.6/Education.repo
zypper refresh
zypper install anki
Para 15.5 execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/Education/15.5/Education.repo
zypper refresh
zypper install anki
Para 15.4 execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/Education/15.4/Education.repo
zypper refresh
zypper install anki