I've ported these scripts to argparse (and pushed the result) after some rudimentary testing. Note that the yaml output of schema-dump.py was already broken, it tries to split a string on '<' assigning the result to a 2-tuple resulting in a ValueError. May very well be that this works with the standard schema, though.

Let me know if we can close this (and open another issue for the yaml error? Unfortunately I don't know enough about the rudimentary parser implemented here to fix this.