[MacPorts] #65638: libcxx: builds failing for 10.6, blocking downstream ports

[MacPorts]

#65638: libcxx: builds failing for 10.6, blocking downstream ports
----------------------------------------+----------------------
  Reporter:  mascguy                    |      Owner:  catap
      Type:  defect                     |     Status:  assigned
  Priority:  High                       |  Milestone:
 Component:  ports                      |    Version:  2.7.2
Resolution:                             |   Keywords:  leopard
      Port:  libcxx clang-11-bootstrap  |
----------------------------------------+----------------------

Comment (by jmroot):

 See https://github.com/macports/macports-
 ports/commit/2a6125bbce37dabecf26246a253e79e9f58eb820#r80645543

 There's a reason this wasn't openmaintainer, it's all very subtle and easy
 to break. Changes need to be tested to ensure bootstrapping from scratch
 works as well as upgrading in an existing installation.

-- 
Ticket URL: <https://trac.macports.org/ticket/65638#comment:5>
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