[MacPorts] #61031: qt59-qtlocation: fatal error: 'experimental/optional' file not found

[MacPorts]

#61031: qt59-qtlocation: fatal error: 'experimental/optional' file not found
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  Reporter:  chrstphrchvz     |      Owner:  MarcusCalhoun-Lopez
      Type:  defect           |     Status:  assigned
  Priority:  Normal           |  Milestone:
 Component:  ports            |    Version:  2.6.3
Resolution:                   |   Keywords:
      Port:  qt59-qtlocation  |
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Comment (by kencu):

 qt5 is very complicated to make work properly across macports' range of
 systems.

 Marcus has inversted 100s if not 1000s of hours in the various qt5 ports.

 I wouldn't do much to them until he returns unless really urgent.

 we spend some time making newer qt5 versions work on older systems, but
 very little making older qt5 versions build on newer systems as there is
 generally little point to that.

 In most cases, the user should install the newer qt5 version appropriate
 for their newer os instead.

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Ticket URL: <https://trac.macports.org/ticket/61031#comment:5>
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