[adeon]

I think maybe the authors are using a strange definition of "fork": if you fork a project and then take it to a different direction, making incompatible changes from upstream then it's somehow not a fork anymore. I'm not too sure though if that's the thinking. (reading from https://gren-lang.org/book/faq.html)

Seems like a fork to me.

Or maybe the thinking is that they'll rewrite it from scratch at some point which would make it not a fork from code perspective.

[Skinney]

I’m not claiming it is not a fork. It is.

That said, people expect certain things when you market something as a fork, so I’m a little careful in making that the first thing someone hears of the language.