[MacPorts] #45736: Gecode port update to gecode 4.3.1 and qt5-mac dependency

[MacPorts]

#45736: Gecode port update to gecode 4.3.1 and qt5-mac dependency
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  Reporter:  l.digaspero@…  |      Owner:  brandon@…
      Type:  update         |     Status:  new
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:  2.3.2
Resolution:                 |   Keywords:  haspatch
      Port:  gecode         |
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Comment (by l.digaspero@…):

 Actually Gecode works also with the qt4 version, however, similarly to
 your point, it prevents to install qt5. Perhaps a compromise would be to
 let the user decide which qt version to be used, i.e., provide a qt4 and
 qt5 variant of the gecode installation.

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Ticket URL: <https://trac.macports.org/ticket/45736#comment:3>
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