cmake-gui from home:phoenix.os:depository 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:phoenix.os:depository/openSUSE_Tumbleweed/home:phoenix.os:depository.repo zypper refresh zypper install cmake-gui
For 15.4 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:phoenix.os:depository/15.4/home:phoenix.os:depository.repo zypper refresh zypper install cmake-gui