use pyproject.toml

[edsonibarra]

Modern Python packages can contain a pyproject.toml file, first introduced in PEP 518 and later expanded in PEP 517, PEP 621 and PEP 660. This file contains build system requirements and information, which are used by pip to build the package.

[Weidav]

Wow, I luckily read the official python packaging guide / docs here:
https://packaging.python.org/en/latest/overview/
This repo and the book are outdated, big disappointment from an O'Reilly Book.
I get that a book becomes outdated, but I didn't except them to abandon such a simple repo with pull-requests from the community waiting to be merged.