[MacPorts] #51178: graphviz-devel installation failure

[MacPorts]

#51178: graphviz-devel installation failure
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  Reporter:  ajpowel@…       |      Owner:  ryandesign@…
      Type:  defect          |     Status:  new
  Priority:  Normal          |  Milestone:
 Component:  ports           |    Version:  2.3.4
Resolution:                  |   Keywords:
      Port:  graphviz-devel  |
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Comment (by ryandesign@…):

 The problem is not on a mirror; the problem is on the master site. The
 developers have issued a stealth update again. I already reported this
 problem to them in September 2015 here:
 http://www.graphviz.org/mantisbt/view.php?id=2569

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Ticket URL: <https://trac.macports.org/ticket/51178#comment:4>
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