[GHC] #4058: improve error message: Module `System.IO' does not export `LineBuffering'

[GHC]

#4058: improve error message: Module `System.IO' does not export `LineBuffering'
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    Reporter:  simonmar          |        Owner:                         
        Type:  feature request   |       Status:  patch                  
    Priority:  normal            |    Milestone:  7.0.1                  
   Component:  Compiler          |      Version:  6.12.2                 
    Keywords:                    |     Testcase:                         
   Blockedby:                    |   Difficulty:  Easy (less than 1 hour)
          Os:  Unknown/Multiple  |     Blocking:                         
Architecture:  Unknown/Multiple  |      Failure:  None/Unknown           
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Changes (by michalt):

 * cc: michal.terepeta@… (added)
  * status:  new => patch


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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4058#comment:2>
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