- build-depends: ghc >= 6.11, pretty, vhdl, haskell98, ghc-paths, syb,
- data-accessor, containers, base >= 4, transformers,
+ build-depends: ghc >= 6.12, pretty, vhdl > 0.1, haskell98, syb,
+ data-accessor, containers, base >= 4 && < 5, transformers,