[MacPorts] #38217: doxygen: Should not depend on graphviz

[MacPorts]

#38217: doxygen: Should not depend on graphviz
-------------------------+---------------------
 Reporter:  larryv@…     |      Owner:  css@…
     Type:  enhancement  |     Status:  new
 Priority:  Normal       |  Milestone:
Component:  ports        |    Version:
 Keywords:               |       Port:  doxygen
-------------------------+---------------------
 One does not require Graphviz to use Doxygen, so the `doxygen` port should
 not depend on `graphviz`. Ports that require Doxygen’s Graphviz
 integration should declare a separate dependency on `graphviz`. I will see
 if any ports need this.

 https://lists.macosforge.org/pipermail/macports-
 dev/2013-February/022085.html
 https://lists.macosforge.org/pipermail/macports-
 dev/2013-February/022086.html
 https://lists.macosforge.org/pipermail/macports-
 dev/2013-February/022089.html
 https://lists.macosforge.org/pipermail/macports-
 dev/2013-February/022090.html
 https://lists.macosforge.org/pipermail/macports-
 dev/2013-February/022102.html

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Ticket URL: <https://trac.macports.org/ticket/38217>
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