[MacPorts] #42082: [pandoc]: configure step fails with "missing dependencies..."

[MacPorts]

#42082: [pandoc]: configure step fails with "missing dependencies..."
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  Reporter:  kurt.pfeifle@…  |      Owner:  cal@…
      Type:  defect          |     Status:  new
  Priority:  Normal          |  Milestone:
 Component:  ports           |    Version:  2.2.1
Resolution:                  |   Keywords:
      Port:  pandoc          |
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Comment (by kurt.pfeifle@…):

 Ok, these logs proof there's a problem with my installed packages. But
 they leave me clueless about how to fix it. (I have no idea about
 Haskell/ghc/cabal packages.)

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Ticket URL: <https://trac.macports.org/ticket/42082#comment:4>
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