How to enable Concepts?
I tried really hard on Google, and then StackExchange, and then GitLab's own site search, but utterly failed to find any documentation at all on the proper way to enable C++2a Concepts, which is generally supported via -fconcepts in clang/gcc or /experiment:concepts in MSVC. Is this a compile feature in CMake yet? something like cxx_concepts?
If not, could it be?