[MacPorts] #43328: librsvg dependent on gtk3?

[MacPorts]

#43328: librsvg dependent on gtk3?
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  Reporter:  jshpettus@…  |      Owner:  pixilla@…
      Type:  defect       |     Status:  new
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:  2.2.1
Resolution:               |   Keywords:
      Port:  librsvg      |
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Comment (by devans@…):

 Patch attached that adds a new default variant +viewer as well as updating
 the port to version 2.30.2 (#43331).

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Ticket URL: <https://trac.macports.org/ticket/43328#comment:11>
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