New comment by ahesford on void-packages repository

https://github.com/void-linux/void-packages/pull/27166#issuecomment-745082681

Comment:
It turns out setting the PYTHON_CONFIG environment variable is sufficient to get these packages to find the right Python options, leaving only the `waf` configure arguments. That seems more appropriate in the `waf` build style (when the `qemu` helper is detected), so I eliminated the helper and still simplified the templates.