Для openSUSE Leap 15.6 запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/home:ymarkovitch:devel/openSUSE_Leap_15.6/home:ymarkovitch:devel.repo
zypper refresh
zypper install cmake-mini
Для openSUSE Leap 15.5 запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/home:ymarkovitch:devel/openSUSE_Leap_15.5/home:ymarkovitch:devel.repo
zypper refresh
zypper install cmake-mini
Для openSUSE Leap 15.4 запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/home:ymarkovitch:devel/openSUSE_Leap_15.4/home:ymarkovitch:devel.repo
zypper refresh
zypper install cmake-mini