New comment by xtraeme on void-packages repository

https://github.com/void-linux/void-packages/pull/20439#issuecomment-606507820

Comment:
```
[juan@leysa void-packages]$ cat common/environment/build-style/python3-module.sh
lib32disabled=yes
makedepends+=" python3"
```

So yes, you need to add `python3` to `hostmakedepends`