Just another example where C++ language features are incompatible with each other, to be fixed "in a later version" which may or may not happen. There are so many of those in C++. I desperately wish they'd just do it properly initially.

Me too, unfortunately the old guard sees no value in implementation before standardisation for each single feature.

So it is as it is, plenty of software in C++ isn't going to be rewriten into something else.

Maybe someone can do a Claude rewrite from LLVM into something else. /s