Glad to hear it! We've also tossed around the idea of having a precompiled standard lib come with it upon installation. We're certainly not looking to increase the number of standard libraries, when there's already so many to choose from, but including/pre-building/curating is certainly within the scope.

This would be so interesting! I don't know any other language that has made this before. But if the intention is to increase the reach of OCaml then if sound like a great plan.

Have you ever tried the Jane Street standard libraries?

yeah, but it's not the standard library. this is my problem. what about compatibility with the other tools/libs?

I think for the most part the community is standardizing on using Core as though it was the standard. As an example: Real World OCaml, for instance, assumes Core is installed (note: I believe it is coauthored by one of the Jane Street employees).