[MacPorts] #57108: Failed to upgrade opencv @3.2.0+contrib+python36 to opencv @3.4.1_2 Mac OSX Sierra

[MacPorts]

#57108: Failed to upgrade opencv @3.2.0+contrib+python36 to opencv @3.4.1_2 Mac OSX
Sierra
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  Reporter:  fmw42   |      Owner:  stromnov
      Type:  defect  |     Status:  assigned
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:
Resolution:          |   Keywords:
      Port:  opencv  |
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Comment (by sharris40):

 Would changing the dependency on protobuf-cpp to protobuf3-cpp in the
 Portfile fix this?

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Ticket URL: <https://trac.macports.org/ticket/57108#comment:5>
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