Configuring ViennaRNA-bindings-0.0.3.0...
Dependency array ==0.4.0.1: using array-0.4.0.1
Dependency base ==4.6.0.1: using base-4.6.0.1
setup-Cabal-1.16.0.3-ghc-7.6.3: The program c2hs is required but it could not
be found.