Configuring llvm-base-types-0.3.0... Dependency GenericPretty ==1.2.1: using GenericPretty-1.2.1 Dependency base ==4.6.0.1: using base-4.6.0.1 Dependency containers ==0.5.0.0: using containers-0.5.0.0 Dependency deepseq ==1.3.0.1: using deepseq-1.3.0.1 Dependency dwarf ==0.23: using dwarf-0.23 Dependency failure ==0.2.0.1: using failure-0.2.0.1 Dependency graphviz ==2999.16.0.0: using graphviz-2999.16.0.0 Dependency hashable ==1.2.1.0: using hashable-1.2.1.0 Dependency pretty ==1.1.1.0: using pretty-1.1.1.0 Dependency regex-tdfa ==1.1.8: using regex-tdfa-1.1.8 Dependency text ==0.11.2.3: using text-0.11.2.3 Dependency transformers ==0.3.0.0: using transformers-0.3.0.0 Dependency unordered-containers ==0.2.3.3: using unordered-containers-0.2.3.3 Dependency vector ==0.10.9.1: using vector-0.10.9.1 setup-Cabal-1.16.0.3-ghc-7.6.3: The program c2hs is required but it could not be found.