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Summary

GHC panics because of issue in title.

[11 of 12] Compiling Telomare.Possible ( src/Telomare/Possible.hs, /home/sfultong/code/stand-in-language/dist-newstyle/build/x86_64-linux/ghc-8.10.7/telomare-0.1.0.0/build/Telomare/Possible.o, /home/sfultong/code/stand-in-language/dist-newstyle/build/x86_64-linux/ghc-8.10.7/telomare-0.1.0.0/build/Telomare/Possible.dyn_o )
ghc: panic! (the 'impossible' happened)
  (GHC version 8.10.7:
	flatten_args wandered into deeper water than usual
  Call stack:
      CallStack (from HasCallStack):
        callStackDoc, called at compiler/utils/Outputable.hs:1179:37 in ghc:Outputable
        pprPanic, called at compiler/typecheck/TcFlatten.hs:1029:21 in ghc:TcFlatten

Steps to reproduce

Compile https://github.com/sfultong/stand-in-language/blob/7d844b0271156988dad9f843810ed9e98042c6f8/src/Telomare/Possible.hs

Expected behavior

No GHC panic.

Environment

• GHC version used: 8.10.7

Optional:

• Operating System:
• System Architecture: