Hello, I'm trying to write a program that first reads input from a pipe and then reads keyboard input from the user (like fzf, the fuzzy finder). Under different circumstances I could open a handle to `/dev/tty` and use the `hGet...` functions from `System.IO` to get the user's keyboard input, but I'm constructing the text user interface with the brick library, which doesn't seem to give my any way to sneak in alternative handles through its application entry point functions. So, what I'm looking for is a function which takes an `IO ()` function like the usual `main` and a `Handle` and turns it into an `IO ()` function that reads from the provided handle instead of `stdin`. Does that make sense? I might be looking for something that doesn't exist. Or I'm lacking the language to get results from a search engine. To illustrate the problem further, here is a condensed brick application: import qualified Brick.Main as Main import qualified Brick.Types as Types import qualified Graphics.Vty as Vty import Brick.AttrMap ( attrMap ) import Brick.Widgets.Core ( str ) type Event = Types.EventM () ( Types.Next () ) main = let app = Main.App { Main.appChooseCursor = Main.neverShowCursor , Main.appHandleEvent = \ _ _ -> Main.halt () :: Event , Main.appStartEvent = pure , Main.appAttrMap = \ _ -> attrMap Vty.currentAttr [] , Main.appDraw = \ _ -> [ str Hit any key to exit. ] } in Main.defaultMain app () How do I get this `main` function to read from a custom handle intead of stdin?