constraints

constraints: QuickCheck ==2.8,
             aeson ==0.8.0.2,
             array ==0.5.1.0,
             attoparsec ==0.12.1.5,
             base ==4.8.0.0,
             base16-bytestring ==0.1.1.6,
             blaze-builder ==0.4.0.1,
             byteable ==0.1.1,
             bytestring ==0.10.6.0,
             case-insensitive ==1.2.0.4,
             charset ==0.3.7,
             containers ==0.5.6.2,
             cryptohash ==0.11.6,
             deepseq ==1.4.1.1,
             dlist ==0.7.1.1,
             ghc-prim ==0.4.0.0,
             hashable ==1.2.3.2,
             http-types ==0.8.6,
             integer-gmp ==1.0.0.0,
             mtl ==2.2.1,
             nats ==1,
             old-locale ==1.0.0.7,
             old-time ==1.1.0.3,
             parsec ==3.1.9,
             parsers ==0.12.1.1,
             pretty ==1.1.2.0,
             primitive ==0.5.4.0,
             quickcheck-instances ==0.3.11,
             random ==1.1,
             rts ==1.0,
             scientific ==0.3.3.8,
             semigroups ==0.16.2.2,
             syb ==0.4.4,
             template-haskell ==2.10.0.0,
             text ==1.2.0.4,
             tf-random ==0.5,
             time ==1.5.0.1,
             transformers ==0.4.2.0,
             unordered-containers ==0.2.5.1,
             vector ==0.10.12.3