[MacPorts] #71943: Explain legacy-support issue with precompiled rustc

[MacPorts]

#71943: Explain legacy-support issue with precompiled rustc
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  Reporter:  fhgwright       |      Owner:  MarcusCalhoun-Lopez
      Type:  request         |     Status:  reopened
  Priority:  Low             |  Milestone:
 Component:  ports           |    Version:
Resolution:                  |   Keywords:
      Port:  legacy-support  |
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Comment (by kencu):

 Yes, prospecting more-or-less proprietary Apple workarounds can be
 interesting going!

 I will leave you to it, and to write up a good summary for it all if you
 ever get to the point where you feel up to it!

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Ticket URL: <https://trac.macports.org/ticket/71943#comment:9>
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