[MacPorts] #63597: graphviz-gui @2.49.1_0.darwin_15.x86_64: unknown type name 'NSToolbarItemIdentifier'

[MacPorts]

#63597: graphviz-gui @2.49.1_0.darwin_15.x86_64: unknown type name
'NSToolbarItemIdentifier'
---------------------------+-----------------------------------------------
  Reporter:  thetrial      |      Owner:  mascguy
      Type:  defect        |     Status:  assigned
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.7.1
Resolution:                |   Keywords:  elcapitan legacy-os patch-pending
      Port:  graphviz-gui  |
---------------------------+-----------------------------------------------

Comment (by mascguy):

 I have a fix which I'm comfortable with, and will be merging shortly. The
 most time-consuming part is installing Xcode 8.2.1, so that it can be
 properly tested.

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Ticket URL: <https://trac.macports.org/ticket/63597#comment:20>
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