[MacPorts] #59995: python37 destroot failure (was: Problem installing py38-matplotlib)

[MacPorts]

#59995: python37 destroot failure
--------------------------+----------------------
  Reporter:  AgilentGCMS  |      Owner:  jmroot
      Type:  defect       |     Status:  accepted
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:
Resolution:               |   Keywords:
      Port:  python37     |
--------------------------+----------------------
Changes (by jmroot):

 * status:  new => accepted
 * owner:  (none) => jmroot
 * port:   => python37


Comment:

 One of the recursive dependencies like libpsl uses python37. Python 3.7 is
 the default version for a lot of ports currently, and that's not a
 problem.

 I can see at least two things wrong in your log: MacOSX.sdk (which would
 be the 10.15 SDK) is being used instead of MacOSX10.14.sdk, and
 ${prefix}/bin/gcc is being used instead of /usr/bin/clang. I don't know
 why either of those would be the case. The log is incomplete (it starts at
 the destroot phase), so please generate a complete one by cleaning
 python37 and trying the installation again, and upload the new log if it
 still fails.

-- 
Ticket URL: <https://trac.macports.org/ticket/59995#comment:1>
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