[saosebastiao]

I don't think that's necessarily true but can't help but still agree with you. There are tons of wonderful DSLs and niche languages out there, but with terrible interfaces to other languages that want to do more with it. In my case that's mostly R and Minizinc, but I know there's plenty more with the same problem.

But it doesn't have to be that way. SQL is a domain specific language. Regex is a domain specific language. They take different API strategies: one goes for ubiquitous and standardized interfaces, the other goes for direct embedding. But they both prove that it's not necessary to write everything in a general purpose language.