For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:megamaced/openSUSE_Tumbleweed/home:megamaced.repo
zypper refresh
zypper install fontconfig-infinality
For openSUSE Slowroll run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:megamaced/openSUSE_Slowroll/home:megamaced.repo
zypper refresh
zypper install fontconfig-infinality
For 15.5 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:megamaced/15.5/home:megamaced.repo
zypper refresh
zypper install fontconfig-infinality