constraints: MonadRandom == 0.1.12 , array == 0.4.0.1 , attoparsec == 0.11.2.1 , base == 4.6.0.1 , base-unicode-symbols == 0.2.2.4 , blaze-builder == 0.3.3.2 , bytestring == 0.10.4.0 , case-insensitive == 1.1.0.3 , charset == 0.3.7 , comonad == 4.0 , conduit == 1.0.15.1 , containers == 0.5.0.0 , contravariant == 0.4.4 , deepseq == 1.3.0.1 , directory == 1.2.0.1 , distributive == 0.4 , either == 4.1.1 , errors == 1.4.5 , filepath == 1.3.0.1 , ghc-prim == 0.3.0.0 , hashable == 1.2.1.0 , http-types == 0.8.3 , integer-gmp == 0.5.0.0 , lifted-base == 0.2.1.1 , mmorph == 1.0.2 , monad-control == 0.3.2.2 , mtl == 2.1.2 , nats == 0.1.2 , network == 2.4.2.2 , old-locale == 1.0.0.5 , parsec == 3.1.5 , parsers == 0.11 , random == 1.0.1.1 , resourcet == 0.4.10 , rts == 1.0 , safe == 0.3.3 , scientific == 0.2.0.2 , semigroupoids == 4.0 , semigroups == 0.12.2 , tagged == 0.7 , text == 1.1.0.1 , text-stream-decode == 0.1.0.4 , time == 1.4.0.1 , transformers == 0.3.0.0 , transformers-base == 0.4.1 , transformers-compat == 0.1.1.1 , unix == 2.7.0.0 , unordered-containers == 0.2.3.3 , vault == 0.3.0.3 , void == 0.6.1 , wai == 1.4.1