New comment by q66 on void-packages repository

https://github.com/void-linux/void-packages/issues/19495#issuecomment-590876067

Comment:
This never worked, even before my changes. The problem is basically that inside `setup_pkg` there is `. $XBPS_CONFIG_FILE 2>/dev/null` so everything that's set inside config file still overrides arguments unconditionally.