[Haskell-cafe] is there any reason why Language.C.Syntax.AST.CTranslUnit doesn't derive show?

is there any reason why Language.C.Syntax.AST.CTranslUnit doesn't derive show? I would like to look at the data structure it generates. It's a lot easier to experiment it when i can write a template C file, print out the AST and then modify that data structure directly, instead of trying to grok the library. Thanks for your great work btw, the parser is pretty sweet. Anatoly