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Following the instructions in this post: haskell repl in emacs, I could run haskell and ghc mode in emacs.

The issue is that I have ? marks, and I know it says something is wrong, but I don't know how to check why I get the marks (and how to improve my code from the hints). How to get the information what is the problem with my code?

enter image description here

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prosseek
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    Looks like flycheck or something similar...is there a tooltip that appears when you hover over those lines? – li.davidm Feb 23 '15 at 03:44
  • @li.davidm: I see nothing with click, roll over or anything. – prosseek Feb 23 '15 at 03:46
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    @proseek Are you sure? When I hover I get "Top-level binding with no type signature: ...", but this is from flycheck. Do you know if you have flycheck or something running? (What minor mode is providing that `0:2` in the mode line?) – li.davidm Feb 23 '15 at 03:49

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I installed flycheck-haskell package, and then started the flycheck mode. Now I see the help comment.

enter image description here

prosseek
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