[MacPorts] #67336: BSD tar can create corrupted archives on Catalina, Big Sur, Monterey, Ventura

[MacPorts]

#67336: BSD tar can create corrupted archives on Catalina, Big Sur, Monterey,
Ventura
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  Reporter:  catap   |      Owner:  (none)
      Type:  defect  |     Status:  new
  Priority:  Normal  |  Milestone:
 Component:  base    |    Version:  2.8.1
Resolution:          |   Keywords:  catalina, bigsur, monterey, ventura
      Port:          |
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Comment (by catap):

 Replying to [comment:27 mascguy]:
 > Replying to [comment:26 ryandesign]:
 > > GNU tar has support for special handling of sparse files] too. But
 whereas libarchive seems to do this by default, GNU tar doesn't unless you
 use the `--sparse` flag. You could test again with `${prefix}/bin/gtar
 -cvf - --sparse . 2>/dev/null | wc` and see if that also shows the
 problem.
 >
 > If that works, my vote would be to use GNU tar, rather than the call to
 `purge`. (I suppose it would be less wonky if the latter is baked into
 base. Even then, it feels a bit... well... hacky...

 The issue that we need to setup gnutar. And if we're switching to ship
 that, why not to switch to xz which should decrease bandwish / diskusage?
 :)

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Ticket URL: <https://trac.macports.org/ticket/67336#comment:29>
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