New review comment by ahesford on void-packages repository

https://github.com/void-linux/void-packages/pull/23525#discussion_r453227849

Comment:
The `setuptools` installer recognizes `install_requires`, which should generally be placed in `hostmakedepends`, and `requires`, which should be placed in `depends`. I'm going to rewrite some of this based on comments from @Chocimier to simplify and clarify this point.