[Haskell] Re: Top-level <-

John Meacham wrote (snipped):

recursive top level declarations are no more tricky than are normal recursive lets.

Perhaps I am missing something, but surely one very important problem with <- at top level is that calling for the value of something defined by <- causes the corresponding action to be performed? Unless the actions available are very tightly restricted, this means that for example the meaning of a program depends on what order arguments to a pure functions are evaluated, for example.