How to build a self-contained library with cabal?

Question

I have a library which depends on some other libraries and of course the haskell runtime. It exports C API. I want to build it in a way that it was fully self-contained and user wouldn't be bothered with installing haskell, cabal and all the dependencies.

Answer 1

it was fully self-contained and user wouldn't be bothered with installing haskell, cabal and all the dependencies

Then you must distribute your library with all its dependencies -- the Haskell compiler, runtime, C libraries, Cabal, dependent libraries. This is a non-trivial task -- you're rolling your own Haskell Platform.

You could modify the HP source and generate installers. They would be in effect standalone installers for your library.