Dear Yaron,

 

> I very much hope the licensing isn't an issue. We purposely picked a very liberal license to make this kind of thing as easy as possible. Do tell us if you find an issue there.

 

it is hard to believe, but the licensing is an issue. According to this reference from Apache:

 

https://www.apache.org/licenses/GPL-compatibility.html

 

citation:

 

“Despite our best efforts, the FSF has never considered the Apache License to be compatible with GPL version 2, citing the patent termination and indemnification provisions as restrictions not present in the older GPL license.”

 

the apache license you use is not compatible with GPL2. Since the OCaml library is LGPL 2.1, it cannot include Apache licensed code. The patent issue mentioned above has nothing to do with the difference between GPL and LGPL, so my guess would be that this also applies to LGPL 2.X.

 

Please note that the above reference states that Apache is compatible with GPL 3, but I guess you can write a PhD thesis in law and/or computer science about the topic if it is better to have GPL 2.x+ or GPL 3+Apache.

 

If you think it is worthwhile, I can ask one of our open source lawyers for advice, but I think the above statement from Apache is fairly clear.

 

So as it looks, I have to rewrite from scratch what I need - sigh

 

Best regards,

 

Michael