Hello All, I am trying to use both the websockets library and the pipes library. They seem like a natural fit. However, I wanted to use the websockets library to build a pipes 'Producer' and that does not seem possible without some heavy lifting. The websockets library does not give me a connection I can read from and write to. Instead, I need to supply an IO action (called a clientApp). And execute it using something like: --runClient :: String -- ^ Host -- -> Int -- ^ Port -- -> String -- ^ Path -- -> ClientApp a -- ^ Client application -- type ClientApp a = Connection -> IO a -- -> IO a main :: IO () main = withSocketsDo $ runClient "echo.websocket.org" 80 "/" app The problem happens when you couple this restriction with the requirement that ClientApps have type 'Connection -> IO a'. Pipes producers are Monad transformer stacks. For example, I would like to build something like: messageProducer :: Producer' WebsocketMessage IO () But this does not run in the IO monad and at the same time I cannot get a 'Connection' object unless I use runClient. So, it seems I have a catch22 situation. Or have I overlooked something? I'd rather not have to do "un-lifting" on the monad transformer stack. Has anyone done this before? Any suggestions on how to go about it? Thanks, Dimitri