[MacPorts] #51799: add a concept of 'distributions' for ports that work on specific older architectures

[MacPorts]

#51799: add a concept of 'distributions' for ports that work on specific older
architectures
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  Reporter:  kenneth.f.cunningham@…  |      Owner:  macports-tickets@…
      Type:  enhancement             |     Status:  new
  Priority:  Normal                  |  Milestone:
 Component:  base                    |    Version:  2.3.4
Resolution:                          |   Keywords:
      Port:                          |
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Comment (by kenneth.f.cunningham@…):

 Ok, success. I can confirm this works just exactly as you would expect.
 The older port revision, in the local portfile repository, supersedes the
 newer revision in the up-to-date repository. The older qt4-mac port is not
 flagged for updating after a selfupdate, and appears pinned at that
 revision, as hoped.

 The old source file locations are not always correct, so there's one
 hiccup to ponder. Just had to download it manually. Will probably have to
 store those somewhere.
 And there may be some ports that have no older revision that works on -
 say - Tiger, so they should just be made to disappear somehow (or at least
 flag as not installable). I can see how that might be done.

 So this somewhat odd and perhaps not-that-useful-to-anyone-but-me project
 can be done without any significant macports changes.

-- 
Ticket URL: <https://trac.macports.org/ticket/51799#comment:5>
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