[MacPorts] #48324: pandoc @1.12.4.2_1: update available to 1.17.1

[MacPorts]

#48324: pandoc @1.12.4.2_1: update available to 1.17.1
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  Reporter:  joe.oboyle@…  |      Owner:  macports-tickets@…
      Type:  update        |     Status:  new
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:
Resolution:                |   Keywords:
      Port:  pandoc        |
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Comment (by cal@…):

 I locally have:
  - a build of GHC 8.0.1
  - a WIP update of haskell-platform to its current 8.0.1 version

 I would need to:
  - revbump all haskell ports
  - probably update lots of ports on the dependency path to pandoc

 I would prefer to automate generating haskell portfiles from cabal, e.g.
 by modifying https://github.com/NixOS/cabal2nix. Help with this would be
 very welcome.

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Ticket URL: <https://trac.macports.org/ticket/48324#comment:10>
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