Xmake has Clion/IDEA, vscode, vs, sublime and qtcreator plugin.
Correct me if I'm wrong, but a quick search for Clion's support for xmake only returns a dead plugin from intellij which was last updated 4 years ago.
https://plugins.jetbrains.com/plugin/10156-xmake
Meanwhile, Clion is built around cmake. Why would any Clion customer want to drop first-class support for cmake to fall back to an unmaintained plugin that seems to be abandonware?
A reason for using Cmake is that this build system's CMakeLists.txt also works like a universal IDE-agnostic project file that saves the user from wasting time tinkering IDEs and lots of XML files in the case of Visual Studio MSBUILD building system.