Drop Text.PrettyPrint dependency
Drop Text.PrettyPrint dependency

bgamari/shaking-up-ghc,snowleopard/shaking-up-ghc,snowleopard/hadrian,sdiehl/ghc,sdiehl/ghc,sdiehl/ghc,sdiehl/ghc,sdiehl/ghc,izgzhen/hadrian,sdiehl/ghc,sdiehl/ghc