[MacPorts] #36707: graphviz +smyrna fails when gtk2 is installed +quartz -x11

[MacPorts]

#36707: graphviz +smyrna fails when gtk2 is installed +quartz -x11
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  Reporter:  broly@…         |      Owner:  ryandesign
      Type:  defect          |     Status:  new
  Priority:  Normal          |  Milestone:
 Component:  ports           |    Version:  2.1.2
Resolution:                  |   Keywords:
      Port:  graphviz-devel  |
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Comment (by cooljeanius):

 I selected those variants manually because I like to install my ports with
 maximum variants enabled in general when possible, just to see what works.

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Ticket URL: <https://trac.macports.org/ticket/36707#comment:14>
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