Network/HTTP/Proxy.hs:254:15:

    Couldn't match expected type `ResourceT

                                    IO (CIN.Pipe () () ByteString () (ResourceT IO) ())'

                with actual type `IO

                                    (CIN.Pipe () () ByteString () (ResourceT IO) ())'

I can't figure it out. To me it reads like : Expected x, actual x.