Comment by randomdata

But isn't the idiomatic Go solution something like this?

    func checkPermissions(success func())

Like anything, you can still screw it up if you try hard enough, but it should nudge most in the right direction. The talk of error handling seems like a distraction or a case of someone confusingly trying to write code in another language using Go syntax.

Obviously you are not forced to think of the user when designing an API, but you don't have to be mindful of the user in any language. Not even Haskell can save a developer who doesn't care, as noted in an earlier comment.