[GHC] #15102: GHC panic when compiling gi-pango-1.0.15

[GHC]

#15102: GHC panic when compiling gi-pango-1.0.15
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           Reporter:  PaulJohnson    |             Owner:  (none)
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:  8.6.1
          Component:  Compiler       |           Version:  8.2.2
           Keywords:                 |  Operating System:  Linux
       Architecture:                 |   Type of failure:  Compile-time
  Unknown/Multiple                   |  crash or panic
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
-------------------------------------+-------------------------------------
 I got the following error message:


 {{{
     ghc: panic! (the 'impossible' happened)
       (GHC version 8.2.2 for x86_64-unknown-linux):
         tcIfaceGlobal (local): not found
       You are in a maze of twisty little passages, all alike.
       While forcing the thunk for TyThing Layout
       which was lazily initialized by initIfaceCheck typecheckLoop,
       I tried to tie the knot, but I couldn't find Layout
       in the current type environment.
       If you are developing GHC, please read Note [Tying the knot]
       and Note [Type-checking inside the knot].
       Consider rebuilding GHC with profiling for a better stack trace.
       Contents of current type environment: []
       Call stack:
           CallStack (from HasCallStack):
             prettyCurrentCallStack, called at
 compiler/utils/Outputable.hs:1133:58 in ghc:Outputable
             callStackDoc, called at compiler/utils/Outputable.hs:1137:37
 in ghc:Outputable
             pprPanic, called at compiler/iface/TcIface.hs:1696:23 in
 ghc:TcIface
 }}}

 A self-contained Stack project that demonstrates the problem is attached.
 I'm using Stack Version 1.6.3 x86_64 hpack-0.20.0

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15102>
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