[MacPorts] #43894: doxygen: fix tex dependencies

[MacPorts]

#43894: doxygen: fix tex dependencies
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  Reporter:  mojca@…  |      Owner:  css@…
      Type:  defect   |     Status:  new
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:
Resolution:           |   Keywords:
      Port:  doxygen  |
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Comment (by mojca@…):

 Here's another idea how to approach the problem: r121098. Add a variant
 like `+mactex` to switch to external TeX distribution.

 It is less than ideal, but ...

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Ticket URL: <https://trac.macports.org/ticket/43894#comment:11>
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