[MacPorts] #51998: update py-pylint to 1.6.4 ; new dependencies -> add ports py-isort and py-backports-functools_lru_cache

[MacPorts]

#51998: update py-pylint to 1.6.4 ; new dependencies -> add ports py-isort and py-
backports-functools_lru_cache
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  Reporter:  ottenr.work@…  |      Owner:  blair@…
      Type:  update         |     Status:  new
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:
Resolution:                 |   Keywords:
      Port:  py-pylint      |
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Comment (by ottenr.work@…):

 My bad, for not adding the dependency on setuptools_scm... and thanks for
 correcting it. Strangely enough however it did install on my system
 (without having the setuptools_scm port installed), at least I am pretty
 sure that I tested it before submitting the Portfile. Any thoughts or am I
 just imagining things?

 Anyway, thanks for updating/adding the ports, it all works now!

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Ticket URL: <https://trac.macports.org/ticket/51998#comment:4>
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