g++: unrecognized command line option ‘-std=c++20’; did you mean ‘-std=c++2a’?

[munchkindev]

When executing pycom test.py on a primitive number rounding test script I get the following error:

pycom: CompilationError:
        g++: unrecognized command line option ‘-std=c++20’; did you mean ‘-std=c++2a’?

I am running the Debian 10 Docker container and inside I installed pycom. I'm running Python 3.10.6 if that matters (compiled from source).

[munchkindev]

Why do I get a feeling that Debian 10 is not supported and only 11 is?..