[MacPorts] #63765: cmake +qt5 +docs +python39 hangs during build

[MacPorts]

#63765: cmake +qt5 +docs +python39 hangs during build
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  Reporter:  mouse07410  |      Owner:  michaelld
      Type:  defect      |     Status:  assigned
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:
Resolution:              |   Keywords:
      Port:  cmake       |
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Changes (by mascguy):

 * cc: michaelld (removed)
 * owner:  (none) => michaelld
 * status:  new => assigned


Comment:

 @michaelld, if this isn't easily fixable, there's also the option of
 expediting the switch to subports for the GUI and Docs variants. (If
 you're on-board with that change?) See issue:63830

 The work isn't complete just yet - had to temporarily table it, in favor
 of assisting with the OpenSSL 3 migration - but we're close. The proposed
 [not-quite-working] changes are visible now, via `cmake-devel`.

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Ticket URL: <https://trac.macports.org/ticket/63765#comment:12>
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