Given that marshal basically only just dumps code objects, the only viable solution I can see is adding a flag that can be passed all the way to the AST from `Python/bltinmodule.c:builtin_compile_impl` that would sort elements when creating code objects of unordered types.

This could be automatically enabled when compiling a file if we assume imported files are trustworthy or add a flag to the `Lib/compileall.py` module.

I only fear that this might break compiled code objects that make use of unordered types. Since I haven't sifted through the AST internals and the implications of such a change yet, so this is largely up for debate.