[GHC] #7167: Make it a warning (not error) to hide an import that isn't exported

[GHC]

#7167: Make it a warning (not error) to hide an import that isn't exported
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  Reporter:  simonpj                      |          Owner:  igloo           
      Type:  bug                          |         Status:  new             
  Priority:  highest                      |      Milestone:  7.8.1           
 Component:  Compiler                     |        Version:  7.4.2           
Resolution:                               |       Keywords:                  
        Os:  Unknown/Multiple             |   Architecture:  Unknown/Multiple
   Failure:  None/Unknown                 |     Difficulty:  Unknown         
  Testcase:  rename/should_compile/T7167  |      Blockedby:                  
  Blocking:                               |        Related:                  
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Changes (by simonpj):

  * owner:  => igloo
  * milestone:  7.6.1 => 7.8.1


Comment:

 Ian, maybe you can do this for 7.8?  Thanks.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7167#comment:9>
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