I realized my mistake, as I said in the other comments. The main repo is now under LGPL. I'll see what I'll do with the bindings. Writing code is so much better than dealing with licenses!
And yeah, licenses can be challenging and frustrating, especially the first time you release a major project.
I am really super excited by the idea of embedded Datalog in Rust. I sometimes run into situations where I need something that fits in that awkward gap between SQL and Prolog. I want more expressiveness, better composability, and better graph support than SQL. But I also want finite-sized results that I can materialize in bounded time.
There has been some very neat work with incrementally-updated Datalog in the Rust community. For example, I think Datafrog is really neat: https://github.com/frankmcsherry/blog/blob/master/posts/2018... But it's great to see more cool projects in this space, so thank you.