Bug#901306: pandoc: FTBFS on armhf: ghc: panic

[Emilio Pozuelo Monfort]

Source: pandoc
Version: 2.2.1-1
Severity: serious

pandoc now FTBFS on armhf with a ghc panic:

[112 of 131] Compiling Text.Pandoc.Readers.HTML ( src/Text/Pandoc/Readers/HTML.hs, dist-ghc/build/Text/Pandoc/Readers/HTML.p_o )
ghc: panic! (the 'impossible' happened)
  (GHC version 8.2.2 for arm-unknown-linux):
	piResultTy
  Addr#
  String
  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/types/Type.hs:949:35 in ghc:Type

Please report this as a GHC bug:  http://www.haskell.org/ghc/reportabug

Full logs at https://buildd.debian.org/status/logs.php?pkg=pandoc&arch=armhf

Emilio