Earlier quoted context omitted.
The author's wishes are formally and legally specified in the copyright license to the code he wrote, which is MIT and allows redistribution. Everything else is simply noise. Once you make your software free, it isn't yours any longer and your opinions about it (or what others do with it) aren't relevant.
One of the comments: "As the author of the package that is being re-packaged here. I'm against it being repacked into here. While licensing wise I cannot stop you, I do hope you can honor my request. Thank you for considering respecting the author's wishes." It seems more like a matter of respect than a matter of law.
You can't demand respect from the Nix folks after disrespecting them by telling them to do something "just because".