[MacPorts] #58876: ncurses-bootstrap fails to build as dependency on system with working libcxx environment

[MacPorts]

#58876: ncurses-bootstrap fails to build as dependency on system with working
libcxx environment
--------------------------------+--------------------
  Reporter:  grumpybozo         |      Owner:  (none)
      Type:  defect             |     Status:  new
  Priority:  Normal             |  Milestone:
 Component:  ports              |    Version:  2.5.4
Resolution:                     |   Keywords:
      Port:  ncurses-bootstrap  |
--------------------------------+--------------------

Comment (by jmroot):

 With the right blacklisting I think the only other issue would be the
 compiler fallback list you have configured. I'd think it would work to set
 it to something like `macports-clang-8.0 macports-clang-3.7 gcc-4.2 apple-
 gcc-4.2 macports-clang-3.4` so clang-3.4 is only used by things that can
 build with neither current clang nor the old Apple gcc. Put clangs 7.0
 through 5.0 in there after 8.0 if you like, though it shouldn't make much
 difference in most cases. Clangs older than 5.0 are not recommended, but
 3.7 has to be in there to build cmake and 3.4 to build libcxx.

-- 
Ticket URL: <https://trac.macports.org/ticket/58876#comment:5>
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