New comment by sgn on void-packages repository

https://github.com/void-linux/void-packages/pull/29544#issuecomment-810293238

Comment:
Based on https://github.com/zlib-ng/zlib-ng/issues/481, you are having my vote as disagree to replace zlib by zlib-ng

> I'm just reiterating the reasons why there is some differences that we are unlikely to "unfix" even if that means our API is not 100% drop-in replacement