cmake-gui from home:alveus:kodi-next project
Select Your Operating System
Add repository and install manually
For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:alveus:kodi-next/openSUSE_Tumbleweed/home:alveus:kodi-next.repo zypper refresh zypper install cmake-gui