[MacPorts] #54114: mythtv-plugins: Registry error: qt55-qtbase not registered as installed & active

[MacPorts]

#54114: mythtv-plugins: Registry error: qt55-qtbase not registered as installed &
active
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  Reporter:  skymoo             |      Owner:  ctreleaven
      Type:  defect             |     Status:  new
  Priority:  Normal             |  Milestone:
 Component:  ports              |    Version:
Resolution:                     |   Keywords:
      Port:  mythtv-plugins.28  |
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Comment (by ctreleaven):

 Argh.  I'm guessing you have ffmpeg installed and active?  Myth includes
 its own slightly customized version.  I've made numerous attempts to get
 Myth to build despite our version being in place and it was working.

 Could you please deactivate ffmpeg and try again?

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Ticket URL: <https://trac.macports.org/ticket/54114#comment:5>
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