Haskell code coverage tool?

Is anyone aware of a code-coverage tool for Haskell, specifically one that works/uses the ghc? I've been trying to use the profiling information for my purpose but would much prefer there to be a specialized tool that: (i) provides "line" coverage information in the sense that it distinguishes e.g. case handling and if/then/else. (ii) projects the coverage information onto the source code Thanks, - Reto