[MacPorts] #61706: cmake @3.19.1_0: patch-qt4gui.diff fails to apply

[MacPorts]

#61706: cmake @3.19.1_0: patch-qt4gui.diff fails to apply
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  Reporter:  hadrabap  |      Owner:  michaelld
      Type:  defect    |     Status:  assigned
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:
Resolution:            |   Keywords:
      Port:  cmake     |
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Comment (by jmroot):

 Replying to [comment:6 michaelld]:
 > We can either do: (1) just drop Qt4 support entirely from CMake. (2) if
 +qt4 then revert CMake back to the final 3.18 release. Any preferences out
 there?

 Changing the version number in a variant is highly problematic. I would
 suggest dropping the variant from the main cmake port and adding separate
 port or subport for 3.18 if there is demand.

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Ticket URL: <https://trac.macports.org/ticket/61706#comment:9>
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