[MacPorts] #63169: gimp does not build with an error in graphviz

[MacPorts]

#63169: gimp does not build with an error in graphviz
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  Reporter:  johnrmoyer  |      Owner:  (none)
      Type:  defect      |     Status:  new
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.7.1
Resolution:              |   Keywords:  gimp strchr graphviz
      Port:  gimp        |
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Comment (by johnrmoyer):

 https://github.com/GNOME/gimp/commit/2cae9b9acf9da98c4c9990819ffbd5aabe23017e

 app: make "gegl:introspect" an optional operation dependency.
 Check at runtime for the operation availability and set the "Show Image
 Graph" action active depending on this check.

 This goes with discussions to make this operation optional with a
 runtime check for the tool `dot`.
 See: https://gitlab.gnome.org/GNOME/gegl/-/merge_requests/84

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Ticket URL: <https://trac.macports.org/ticket/63169#comment:2>
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