[GHC] #12894: Bump directory

[GHC]

#12894: Bump directory
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        Reporter:  bgamari           |                Owner:
            Type:  bug               |               Status:  new
        Priority:  high              |            Milestone:  8.0.2
       Component:  Compiler          |              Version:  8.0.1
      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 bgamari):

 The problem is specifically
 https://github.com/haskell/directory/issues/63.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12894#comment:1>
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