[bluGill]

CMake says they are there. Other tools mostly are not.

Nobody has said they are using them in anything important, but hopefully that is coming.

[Maxatar]

CMake has support for named modules but does not support header units or C++23 module features such as import std;

[bluGill]

Import std has been there for a while but is experimental until gcc supports it. Gcc just for that support so it should be mainline soon.

[maccard]

We are now getting close to the distance between c++03 and C++11 for making basic modules work on main line toolchains and build systems. That’s absolutely wild.