New comment by rivularis on void-packages repository

https://github.com/void-linux/void-packages/pull/13093#issuecomment-515485908
Comment:
The following is what I received from their support.. 

"We may choose to open source some or all of our apps in the future, but for now, they are closed source. This is due to us using various unblocking techniques that would be exposed and countered if we were to open source the apps. Many countries and networks actively block Windscribe, so for now, the need to stay on top of that outways the benefits of open source."

So it appears the only way to build is via the deb file.

What were the changes I need to make to the package?