For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:weatherhead99/openSUSE_Tumbleweed/home:weatherhead99.repo
zypper refresh
zypper install vigra
For openSUSE Slowroll run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:weatherhead99/openSUSE_Slowroll/home:weatherhead99.repo
zypper refresh
zypper install vigra
For 15.6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:weatherhead99/15.6/home:weatherhead99.repo
zypper refresh
zypper install vigra
For 15.5 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:weatherhead99/15.5/home:weatherhead99.repo
zypper refresh
zypper install vigra