[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 pixilla@…):

 Replying to [comment:13 rjvbertin@…]:
 > Attention: the version generated through Bradley's patch-
 qt4-qt5-concurrence.diff​ will NOT contain the +exclusive variant that
 corresponds to the current default installation, NOR the qt4-mac-
 translational subport that preserves ABI compatibility of existing Qt4
 ports with the new concurrent install.

 With a variant controlling the qt{4,5}-mac conflict how is qt5-mac to know
 if it should or should not conflict with qt4-mac?[[BR]]

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Ticket URL: <https://trac.macports.org/ticket/46238#comment:14>
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