[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 Peter.Danecek@…):

 Replying to [comment:4 mojca@…]:
 > Yes, you properly understood the problem.
 >
 > I wouldn't care about case 2. There are simply way too many things that
 can go wrong. It's user's responsibility if he tries to use a "broken"
 tool.
 >

 I am not so convinced that case 2 is **not** an issue. Just thing of as
 relatively simple scenario:
 * User P installs texlive meta-port with its default variants. He will get
 `texlive-latex`, but not `texlive-latex-extra`;
 * At some point of his innocent live he wants to install some other
 software, which however depends on lets say `doxygen +docs`;

 dependency `bin:pdflatex` is already satisfied, so `texlive-latex-extra`
 will not become available. I do not think this situation is so remote.

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Ticket URL: <https://trac.macports.org/ticket/43894#comment:6>
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