[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 ryandesign@…):

 Separate ports for documentation generally seems like a good idea, and
 easier to do now that we have subports. But it's still a bit of work for
 ports that build documentation as part of their regular build process,
 like xorg-libxcb and octave-devel.

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Ticket URL: <https://trac.macports.org/ticket/37604#comment:15>
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