compas-CEM Installation error nlopt

Hello, im trying to install comps-cem per pip install compas-cem but im always getting the Error of:

Somehow my shell cannot build a wheel for nlopt, thus I cannot install the CEM plugin for grasshopper in rhino on my macOS..

Does anybody knows how to fix this? When trying out manually installing nlopt per CMAKE I still encounter issues.

Thanks in advance!
Felix