[GHC] #2522: Warning for missing export lists

[GHC]

#2522: Warning for missing export lists
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              Reporter:  tim         |            Owner:
                  Type:  feature     |           Status:  new
  request                            |        Milestone:  7.10.1
              Priority:  lowest      |          Version:  6.8.3
             Component:  Compiler    |         Keywords:
            Resolution:              |     Architecture:  Unknown/Multiple
      Operating System:              |       Difficulty:  Unknown
  Unknown/Multiple                   |       Blocked By:
       Type of failure:              |  Related Tickets:
  None/Unknown                       |
             Test Case:              |
              Blocking:              |
Differential Revisions:              |
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Changes (by thomie):

 * cc: NeilMitchell (added)


Comment:

 Neil: is this something `hlint` could do?

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/2522#comment:13>
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