[MacPorts] #55393: graphviz +rsvg depends on graphviz; circular dependency; prevents installation

[MacPorts]

#55393: graphviz +rsvg depends on graphviz; circular dependency; prevents
installation
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  Reporter:  rhstanton  |      Owner:  ryandesign
      Type:  defect     |     Status:  assigned
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:
Resolution:             |   Keywords:
      Port:  graphviz   |
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Comment (by ballapete):

 Replying to [comment:6 ryandesign]:
 > I have absolutely no idea. All I can tell you is that MacPorts behavior
 is undefined when a circular dependency exists.

 In my case, #66461, it would work when `port` would understand that
 `graphviz` and `graphviz-devel` are equivalent and when there is a need to
 install either this or that, then install what the user wants – otherwise
 `port` would not have been invoked and could continue to sleep. If the
 user does not request a particular (set of) variant(s) install the default
 one.

-- 
Ticket URL: <https://trac.macports.org/ticket/55393#comment:12>
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