[MacPorts] #50245: Remove modules for perl 5.16, 5.18 (and 5.20?)

[MacPorts]

#50245: Remove modules for perl 5.16, 5.18 (and 5.20?)
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  Reporter:  mojca@…             |      Owner:  macports-tickets@…
      Type:  enhancement         |     Status:  new
  Priority:  Normal              |  Milestone:
 Component:  ports               |    Version:
Resolution:                      |   Keywords:
      Port:  perl5 p5-graveyard  |
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Comment (by mojca@…):

 Replying to [comment:5 tlockhart1976@…]:
 > I would guess this is an old and retired topic for perl5 support, but
 here goes anyway: why not have the recommended perl versions available in
 the perl5 portgroup? Something like "perl5.recommended" as a list of
 versions which could be assigned to perl5.branches? The simple ports I'm
 listed on have been completely insensitive to which perl microrelease is
 used and I'd guess that would continue in the future.

 These questions should be discussed in #50000.

 But in short: in current implementation, even if we would put
 `"perl5.default 5.22"` and `"perl5.branches 5.20 5.22"` to the PortGroup,
 the individual ports would still need a revbump and there would be a
 higher chance that we would forget to revbump them. As long as individual
 ports need to have `/opt/local/bin/perl5.22` hardcoded in their scripts,
 we need to rebuild all the ports.

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Ticket URL: <https://trac.macports.org/ticket/50245#comment:7>
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