[Haskell-cafe] package to expand TH macros?

I seem to remember finding a package a few days ago that would take Haskell source with TH, then run and expand the TH macros in-place to produce equivalent, TH-free Haskell source.   I just went through the Hackage package list and didn't find anything like that. Did I imagine it?  Or can anyone remind me its name? thanks, --Eric