[MacPorts] #37604: doxygen and xorg-libxcb circular dependency

[MacPorts]

#37604: doxygen and xorg-libxcb circular dependency
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  Reporter:  jmercie1@…           |      Owner:  macports-tickets@…
      Type:  defect               |     Status:  reopened
  Priority:  Normal               |  Milestone:
 Component:  ports                |    Version:  2.1.2
Resolution:                       |   Keywords:
      Port:  doxygen xorg-libxcb  |
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Comment (by egall@…):

 ok, how about a `doxygen-docs` subport for `doxygen` then? That seems like
 its `+docs` variant should be easier to split off, and also Fink does
 something similar...

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Ticket URL: <https://trac.macports.org/ticket/37604#comment:16>
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