[GHC] #10013: GHC 7.8.4 panics while building "vty" library test suite

[GHC]

#10013: GHC 7.8.4 panics while building "vty" library test suite
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              Reporter:  simons      |             Owner:
                  Type:  bug         |            Status:  new
              Priority:  normal      |         Milestone:
             Component:  Compiler    |           Version:  7.8.4
              Keywords:              |  Operating System:  Linux
          Architecture:  x86_64      |   Type of failure:  Compile-time
  (amd64)                            |  crash
             Test Case:              |        Blocked By:
              Blocking:              |   Related Tickets:
Differential Revisions:              |
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 {{{
 Linking dist/build/verify-attribute-opsStub/verify-attribute-opsStub ...
 ghc: panic! (the 'impossible' happened)
   (GHC version 7.8.4 for x86_64-unknown-linux):
         Don't understand library name verify-attribute-ops
 }}}

 A complete build log is available at
 http://hydra.nixos.org/build/18786125/log/raw.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10013>
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