Log message:
py-*: remove unused tool dependency

py-setuptools includes the py-wheel functionality nowadays

Log message:
shells/py-bashlex: import py-bashlex-0.18

bashlex is a Python port of the parser used internally by GNU bash.

For the most part it's transliterated from C, the major differences are:

1. it does not execute anything
2. it is reentrant
3. it generates a complete AST