constraints: QuickCheck ==2.7.6,
             aeson ==0.8.0.2,
             array ==0.5.0.0,
             attoparsec ==0.12.1.2,
             base ==4.7.0.1,
             base16-bytestring ==0.1.1.6,
             blaze-builder ==0.3.3.4,
             byteable ==0.1.1,
             bytestring ==0.10.4.0,
             case-insensitive ==1.2.0.3,
             charset ==0.3.7,
             containers ==0.5.5.1,
             cryptohash ==0.11.6,
             deepseq ==1.3.0.2,
             dlist ==0.7.1,
             ghc-prim ==0.3.1.0,
             hashable ==1.2.3.1,
             http-types ==0.8.5,
             integer-gmp ==0.5.1.0,
             mtl ==2.2.1,
             nats ==1,
             old-locale ==1.0.0.6,
             old-time ==1.1.0.2,
             parsec ==3.1.7,
             parsers ==0.12.1.1,
             pretty ==1.1.1.1,
             primitive ==0.5.4.0,
             quickcheck-instances ==0.3.10,
             random ==1.1,
             rts ==1.0,
             scientific ==0.3.3.7,
             semigroups ==0.16.0.1,
             syb ==0.4.4,
             template-haskell ==2.9.0.0,
             text ==1.2.0.3,
             tf-random ==0.5,
             time ==1.4.2,
             transformers ==0.4.2.0,
             unordered-containers ==0.2.5.1,
             vector ==0.10.12.2