Log message:
py-*: remove unused tool dependency

py-setuptools includes the py-wheel functionality nowadays

Log message:
py-term-background: added version 1.0.1

Determine if shell has a light or dark background.

From Python you can call term_background.is_dark_background() which returns a
True if we think the background is dark.

The heuristics used is to try to query the background color using an xterm
control sequence.