Pretty cool to have a first-class tracing mechanism. Obviously... it's a monad! Haskell has had a MonadTrace monad for a long time, that can be switched on or o

Pretty cool to have a first-class tracing mechanism. Obviously... it's a monad! Haskell has had a MonadTrace monad for a long time, that can be switched on or off depending on your environment. https://hackage.haskell.org/package/tracing-0.0.7.4/docs/Control-Monad-Trace-Class.html#t:MonadTrace https://hackage.haskell.org/package/tracing-0.0.7.4/docs/Con...