[MacPorts] #46570: git, openbrowser, ossp-uuid, xraylib: remove variants perl5_12, perl5_14, introduce support for 5.18 and 5.20

[MacPorts]

#46570: git, openbrowser, ossp-uuid, xraylib: remove variants perl5_12, perl5_14,
introduce support for 5.18 and 5.20
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  Reporter:  mojca@…                             |      Owner:  macports-
      Type:  enhancement                         |  tickets@…
  Priority:  Normal                              |     Status:  new
 Component:  ports                               |  Milestone:
Resolution:                                      |    Version:
      Port:  git, openbrowser, ossp-uuid,        |   Keywords:
  xraylib, biblatex-biber, intltool              |
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Comment (by ryandesign@…):

 I am not familiar with the variant-creating abilities that were added to
 the perl5 portgroup, and I haven't tested your patch, but yes certainly
 please make any such change that you feel is correct to my ports. I've
 made openbrowser openmaintainer now.

 I took a quick look at the patch and at the portgroup. It seems like both
 the port and the portgroup are overwriting `depends_lib`. Shouldn't they
 both be appending to it instead?

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Ticket URL: <https://trac.macports.org/ticket/46570#comment:3>
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