[MacPorts] #68407: Gqrx could use Qt6

[MacPorts]

#68407: Gqrx could use Qt6
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  Reporter:  argilo       |      Owner:  michaelld
      Type:  enhancement  |     Status:  assigned
  Priority:  Low          |  Milestone:
 Component:  ports        |    Version:
Resolution:               |   Keywords:
      Port:  gqrx         |
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Comment (by argilo):

 I do not use macports myself, so I don't know whether QSlider is broken in
 the macports version of Qt5.

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Ticket URL: <https://trac.macports.org/ticket/68407#comment:6>
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