[Haskell-cafe] GHC Core / STG to supercombinators

Hello, I wonder what is the easiest way to compile Haskell to supercombinators (top level functions) using GHC as a library. Is it possible to use GHC simplifier to transform the parsed Haskell source to supercombinators? i.e. to do - eta expansion - closure conversion - lambda lifting Or should it be written from scratch? Is Core or STG suited better for this purpose? Thanks, Csaba