[MacPorts] #62177: mpv @0.33.0_2+audiocd+bluray+bundle+dvd+libarchive+network+opengl+osd+python39+rubberband: cannot convert value of type 'CALayerContentsFormat' to specified type 'String'

[MacPorts]

#62177: mpv
@0.33.0_2+audiocd+bluray+bundle+dvd+libarchive+network+opengl+osd+python39+rubberband:
cannot convert value of type 'CALayerContentsFormat' to specified type
'String'
---------------------+----------------------
  Reporter:  JDLH    |      Owner:  ionic@…
      Type:  defect  |     Status:  assigned
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:  2.6.4
Resolution:          |   Keywords:
      Port:  mpv     |
---------------------+----------------------

Comment (by kencu):

 Jim, take a moment to make sure that your xcode and CLTs exactly match
 (same clang version).

 Almost 100% of MavPorts users on 10.13 are using Xcode 10+ according to
 our stats, and if you do downgrade to Xcode 9, other things will fail to
 build.

 Or be happy with mpv from the buildbot...

-- 
Ticket URL: <https://trac.macports.org/ticket/62177#comment:6>
MacPorts <https://www.macports.org/>
Ports system for macOS