I was trying to implement some abstraction on top of Turtle to redirect the default output (stdout and/or stderr) to a logger function within some monad where the logger is available. While I was able to implement most of the Turtle functions in one way or another it turned out it’s not that trivial to implement custom printf and eprintf since (>>-) of Turtle.Format.Format is not exposed.
I was trying to implement some abstraction on top of Turtle to redirect the default output (stdout and/or stderr) to a logger function within some monad where the logger is available. While I was able to implement most of the Turtle functions in one way or another it turned out it’s not that trivial to implement custom
printfandeprintfsince(>>-)ofTurtle.Format.Formatis not exposed.