[MacPorts] #39774: openbabel @2.3.1 missing dependency on wxwidgets-(devel, 3.0)

[MacPorts]

#39774: openbabel @2.3.1 missing dependency on wxwidgets-(devel,3.0)
------------------------+---------------------
  Reporter:  ba306@…    |      Owner:  mlund@…
      Type:  defect     |     Status:  new
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.1.3
Resolution:             |   Keywords:
      Port:  openbabel  |
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Comment (by c.herbig@…):

 OpenBabel does not //require// wxWidgets unless the cmake -DBUILD_GUI=ON
 is set.  See [http://open-
 babel.readthedocs.org/en/latest/Installation/install.html#compiling-open-
 babel compiling open babel].  In the current portfile it is specifically
 set to off.  Meanwhile the only reference the portfile (or the eigen
 dependency) has to pkgconfig is in this line:
 {{{
 depends_lib         path:lib/pkgconfig/cairo.pc:cairo port:libiconv
 port:libxml2 port:zlib
 }}}

 Perhaps that's where the issue comes from?

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Ticket URL: <https://trac.macports.org/ticket/39774#comment:8>
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