Yes, I know. But CMake-3.11 is too old for some of the packages I would like to have on CentOS 8, especially with respect to the support of Python 3 and Boost.Python.
I don't know if we can spread another
CMake3-3* RPM on EPEL8 together original
CMake-3* from CentOS 8.
But i may provide to you a src-rpm for building it outside official repositories (like a dedicated Copr project).