Comment by jeremyjh

I'm not talking about legal texts. I didn't say he had a right to demand it, or that he should be awarded it by a court. There is no involvement of the legal system in this GitHub issue that I can see.

He acknowledged from the very beginning that the usage is licensed. Licenses aren't involved in the ask.

If you want a legal basis for this right, I suppose it would be GitHub's terms of service, with which his comments appear to be in compliance.

In terms of what is on-topic in this thread, he can state his terms for providing free, unlicensed support wherever he wants. He made it clear he wants nothing to do with support of this library in NixOS, in the place where it was most relevant to mention that.