[GHC] #8882: internal error (deriving generic / cyclical imports?)

[GHC]

#8882: internal error (deriving generic / cyclical imports?)
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        Reporter:  mf825       |            Owner:
            Type:  bug         |           Status:  new
        Priority:  normal      |        Milestone:
       Component:  Compiler    |          Version:  7.6.3
      Resolution:              |         Keywords:  panic
Operating System:  Linux       |     Architecture:  x86_64 (amd64)
 Type of failure:  GHCi crash  |       Difficulty:  Unknown
       Test Case:              |       Blocked By:
        Blocking:              |  Related Tickets:
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Comment (by simonpj):

 See also #8374

 Try with `-fno-warn-amp`?

 Simon

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8882#comment:2>
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