Is it just me or does it seem like modules are a good idea which is totally dead on arrival? It's been four years, and we've had a whole new edition of c++ standard in the meantime, and Clang and GCC still don't have full support for modules.
In the future, things should not get standardized without an actual working implementation of the feature that people can actually use. Even better would be to have multiple similar non-standard features that each compiler can implement, and then the standardization can serve as way for them to converge.
It's even worse that for embedded stuff it takes even longer for these modern compilers to be included in the toolchains etc. For example at work we are looking forward to being able to use GCC 13 later this year so we can use some features that were lacking in the GCC 11.3 we are using currently.
I don't think we can expect modules to be widely adopted before like 2026-38.
Also, we're on GCC 8! TnT '17 is the highest it can go.