micropython-cross provides mpy-cross, which allows compiling python
code to micropython bytecode. This is particularly useful to
unburden MCUs from the task to compile python scripts.
../py/persistentcode.c:397:2: error: #error mp_raw_code_save_file not
implemented for this platform
#error mp_raw_code_save_file not implemented for this platform
^~~~~
use only python3