[GHC] #11418: Suggest correct spelling when module is not found because of typo

[GHC]

#11418: Suggest correct spelling when module is not found because of typo
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        Reporter:  syd               |                Owner:
            Type:  feature request   |               Status:  new
        Priority:  lowest            |            Milestone:
       Component:  Compiler          |              Version:
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by thomie):

 If the `.hs` file exists, GHC doesn't check for the `.lhs` file. I didn't
 make that clear.

 There is no difference between `ghc` and `ghc --make`: `--make` is the
 default mode. There is a difference between `-c` and `--make`.

 It would help if you described how you would like this caching mechanism
 to work, and how it would help with suggesting the correct spelling when a
 module is not found. Use the example from the description, or a different
 example if that makes things more clear. Don't worry too much about how
 GHC currently works; we can get back to that afterwards.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11418#comment:14>
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