[MacPorts] #46238: co-installable qt4-mac and qt5-mac step1 : qt4-mac +concurrent

[MacPorts]

#46238: co-installable qt4-mac and qt5-mac step1 : qt4-mac +concurrent
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  Reporter:  rjvbertin@…  |      Owner:  macports-tickets@…
      Type:  enhancement  |     Status:  new
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:
Resolution:               |   Keywords:  haspatch
      Port:  qt4-mac      |
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Comment (by rjvbertin@…):

 First of, it's not my intention to argue for a prolonged existence of
 +exclusive. But you're right, without a possibility to check what port
 variants are installed, qt5-mac can only do the same kind of check its and
 port:qt4-mac's dependents do to determine whether qt5 (or qt4) have been
 installed with the debug variant. That is, check for tell-tale file
 presence. The same applies to qt4-mac, of course.

 But again, as far as I'm concerned this is a temporary situation, one that
 I in fact only provided for testing purposes and for potential users who
 prefer to stick just to the current, exclusive version, for whatever
 reason.

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Ticket URL: <https://trac.macports.org/ticket/46238#comment:15>
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