> Okay but how do you distribute the program that depends on Julia to clients?

That's not the question that was asked though. The question the person asked as "Can you call Julia routines from other languages?" and the answer to that is "yes, you can easily do that".

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> I guess we're both right. I was talking about the "libraries" functionality

I'm confused, what functionality exactly are you saying is missing from the libraries functionality? That very example you link to shows one using the julia runtime via printing.

And yes, dynamic dispatch and dynamic code generation do work from libraries created by PackageCompiler.jl as well...