constraints: MonadRandom ==0.1.13, array ==0.5.0.0, attoparsec ==0.11.3.4, base ==4.7.0.0, base-unicode-symbols ==0.2.2.4, blaze-builder ==0.3.3.2, bytestring ==0.10.4.0, case-insensitive ==1.2.0.0, charset ==0.3.7, comonad ==4.2, containers ==0.5.5.1, contravariant ==0.5.1, deepseq ==1.3.0.2, distributive ==0.4.3.2, either ==4.1.2, errors ==1.4.7, exceptions ==0.6.1, ghc-prim ==0.3.1.0, hashable ==1.2.2.0, http-types ==0.8.5, integer-gmp ==0.5.1.0, lifted-base ==0.2.2.2, mmorph ==1.0.3, monad-control ==0.3.3.0, mtl ==2.1.3.1, nats ==0.2, network ==2.5.0.0, old-locale ==1.0.0.6, parsec ==3.1.5, parsers ==0.11.0.1, random ==1.0.1.1, resourcet ==1.1.2.2, rts ==1.0, safe ==0.3.4, scientific ==0.3.2.0, semigroupoids ==4.0.2, semigroups ==0.14, tagged ==0.7.2, text ==1.1.1.2, time ==1.4.2, transformers ==0.3.0.0, transformers-base ==0.4.2, transformers-compat ==0.1.1.1, unix ==2.7.0.1, unordered-containers ==0.2.4.0, vault ==0.3.0.3, wai ==3.0.0.1, wai-cors ==0.1.4