[GHC] #8247: Dependency tracking (--make) broken for re-exported modules

[GHC]

#8247: Dependency tracking (--make) broken for re-exported modules
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        Reporter:  heisenbug         |            Owner:
            Type:  bug               |           Status:  new
        Priority:  normal            |        Milestone:
       Component:  Compiler          |          Version:  7.7
      Resolution:                    |         Keywords:
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown      |       Difficulty:  Unknown
       Test Case:  recomp013         |       Blocked By:
        Blocking:                    |  Related Tickets:
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Comment (by simonmar):

 I just added a `sleep 1` to make the test more reliable.  Please re-open
 if you still have problems.

 see testsuite/b831fb94517d52681954d829c9289a8eb506b5d5

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8247#comment:5>
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