Not sure if this is as easy as changing the reported ninja version to match the C++ version or if this is requires more changes so I've opened an issue.
CMake Error:
The Ninja generator does not support C++20 modules using Ninja version
1.9.0
due to lack of required features. Ninja 1.11 or higher is required.
Not sure if this is as easy as changing the reported ninja version to match the C++ version or if this is requires more changes so I've opened an issue.