I need template haskell for chart. I installed the libghc6-src-ext-devs which supposedly provides template haskell, but I get the following error. *** Chasing dependencies: Chasing modules from: *Language.Haskell.TH.Syntax.Internals,*Language.Haskell.TH.Syntax,*Language.Haskell.TH.PprLib,*Language.Haskell.TH.Ppr,*Language.Haskell.TH.Lib,*Language.Haskell.TH.Quote,*Language.Haskell.TH Language/Haskell/TH/Syntax/Internals.hs:20:7: Could not find module `Data.Data': it is a member of the hidden package `base' locations searched: dist/build/Data/Data.hs dist/build/Data/Data.lhs Data/Data.hs Data/Data.lhs dist/build/autogen/Data/Data.hs dist/build/autogen/Data/Data.lhs I get the same error if I try cabal install template-haskell also. I can't tell if this is because there is a version problem or the library really isn't installed. Brian