The Opa web site says that I cannot: "Firstly, `‘if I'm using AGPL Opa to develop an app does it need to be AGPL, too?’'. Long story short — yes, it does." It would probably be better for me to consult the license, but I don't plan on reading the license just to make sure that I really can't use a language whose developers don't want me to be able to use it
I confirm (I'm the one who wrote that FAQ entry).
However, if you wish to make your code open-source with a different license, don't hesitate to contact Mathieu.Baudet@mlstate.com, he'll certainly be happy to arrange something.
I agree that under the right circumstances, the code would have to be released under the AGPL. I disagree with the fact that you could not also release the code (your code, not including any of MLstate's code) under a permissive license like MIT or WTFPL. If you think you are in a position to forbid this, I would be interested to know your reasoning.
I actually have no clue. Perhaps hbbio can respond to this question. He's our CEO, btw.
Otherwise, you can try and ping our COO at Mathieu.Baudet@mlstate.com .