[Haskell-cafe] static analysis (call graph) tools?

Dear Cafe, what tools are there for static analysis of Haskell programs? I mean simple things like the call graph (who is calling whom). Which are, of course, not that simple because of higher order functions. Do leksah/eclipsefp(/ghc api) have something like "show all uses of an identifier" (eclipse: "open call hierarchy") (with correct handling of scoping and modules)? Thanks - Johannes.