[GHC] #15700: Plugins cause GHC to panic: cannot find dynamic libraries

[GHC]

#15700: Plugins cause GHC to panic: cannot find dynamic libraries
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        Reporter:  sheaf             |                Owner:  (none)
            Type:  bug               |               Status:  infoneeded
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.6.1
      Resolution:                    |             Keywords:
Operating System:  Windows           |         Architecture:
 Type of failure:  Compile-time      |  Unknown/Multiple
  crash or panic                     |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #15492            |  Differential Rev(s):
       Wiki Page:                    |
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Changes (by sheaf):

 * Attachment "DsUsage.hs" added.

 Fix for plugin change check crash on Windows

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15700>
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