Para openSUSE Tumbleweed corra o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/home:crazyme/openSUSE_Tumbleweed/home:crazyme.repo
zypper refresh
zypper install racket
Para openSUSE Factory ARM corra o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/home:crazyme/openSUSE_Factory_ARM/home:crazyme.repo
zypper refresh
zypper install racket
Para 15.4 corra o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/home:crazyme/15.4/home:crazyme.repo
zypper refresh
zypper install racket