[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
-------------------------+-------------------------------------------------
  Reporter:  catap       |      Owner:  (none)
      Type:  defect      |     Status:  new
  Priority:  High        |  Milestone:
 Component:  base        |    Version:  2.8.1
Resolution:              |   Keywords:  catalina, bigsur, monterey,
      Port:              |  ventura, sonoma, sequoia
-------------------------+-------------------------------------------------

Comment (by jmroot):

 Replying to [comment:39 ryandesign]:
 > I'm not aware of a simplified test case. Per above comments, Kirill
 found that the pari port always exhibits the problem on GitHub Actions, so
 we did test builds in which we added code to the `pre-install` block, for
 example tarring the destroot with BSD tar and GNU tar with various options
 before and after running `purge` and checking the size of the resulting
 archives as a way to measure whether the problem had occurred. Additional
 tests could be run that way.

 The macports-ports CI is not terribly suited to testing modifications to
 base. Ideally we'd want something that can be added to base's test suite.

 > `--no-read-sparse` is exactly the option added to `tar` in libarchive
 3.6.0 that I was talking about, which is not available in any version of
 macOS since it still uses an older version of libarchive.

 Yes. We could use it if the libarchive port is installed and on future OS
 versions.

-- 
Ticket URL: <https://trac.macports.org/ticket/67336#comment:40>
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