[MacPorts] #56093: compiler-blacklist-versions: simplify clang blacklisting by associating Apple clang versions with macports-clang versions

[MacPorts]

#56093: compiler-blacklist-versions: simplify clang blacklisting by associating
Apple clang versions with macports-clang versions
--------------------------+-----------------
  Reporter:  kencu        |      Owner:
      Type:  enhancement  |     Status:  new
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:
Resolution:               |   Keywords:
      Port:  clang        |
--------------------------+-----------------
Description changed by kencu:

Old description:

> Long title, apologies.
>
> I would be helpful if we could find an association between Apple clang
> releases and macports-clang-N versions such that blacklisting a given
> version of clang, such as {clang < 800} would automatically also
> blacklist macports-clang-3.8 and below (or whichever version best
> correlates).

New description:

 Long title, apologies.

 It might be helpful if we could find an association between Apple clang
 releases and macports-clang-N versions such that blacklisting a given
 version of clang, such as {clang < 800} would automatically also blacklist
 macports-clang-3.8 and below (or whichever version best correlates).

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Ticket URL: <https://trac.macports.org/ticket/56093#comment:1>
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