Para openSUSE Tumbleweed execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/home:ilikebreadtoomuch:quake/openSUSE_Tumbleweed/home:ilikebreadtoomuch:quake.repo
zypper refresh
zypper install fteqw
Para 15.5 execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/home:ilikebreadtoomuch:quake/15.5/home:ilikebreadtoomuch:quake.repo
zypper refresh
zypper install fteqw
Para 15.4 execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/home:ilikebreadtoomuch:quake/15.4/home:ilikebreadtoomuch:quake.repo
zypper refresh
zypper install fteqw