[MacPorts] #70682: qt5-qttools @5.15.15 build failure

[MacPorts]

#70682: qt5-qttools @5.15.15 build failure
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  Reporter:  yoshikazu-tanaka-1961  |      Owner:  MarcusCalhoun-Lopez
      Type:  defect                 |     Status:  assigned
  Priority:  Normal                 |  Milestone:
 Component:  ports                  |    Version:  2.10.1
Resolution:                         |   Keywords:
      Port:  qt5-qttools            |
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Comment (by ballapete):

 My often used temporary solution for this situation is to `edit Portfile`
 and set `version and revision number` to the values of the installed
 `port` so that nothing needs to be `upgrade`d, it's just postponed to some
 time in the future. When you save the "old fashioned" version somewhere
 (cp $(port file  qt5-qttools) ~/Portfile-qt5-qttools.OK) you can copy it
 over and over again after each (useless) `selfupdate` (sudo cp ~/Portfile-
 qt5-qttools.OK $(port file  qt5-qttools) – using bash syntax because Trac
 would interpret the backticks as text markup).

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Ticket URL: <https://trac.macports.org/ticket/70682#comment:15>
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