[Haskell-cafe] question in install gtk2hs's webkit hackage

hi, I am cabal-installing webkit hackage on windows, and get a error: pkg-config pckage webkit-1.0 version > 1.1.15 is required but could be not found What should I next? install webkit? How to? I find there is a webkitgtk+ project. Which one should I install. I have try to install both of them follow their docs, and failed. I just have no experience in build software on windows. Thanks.