[MacPorts] #52000: Add xz to "base" to allow changing the default compression format to .tar.xz in the future

[MacPorts]

#52000: Add xz to "base" to allow changing the default compression format to
.tar.xz in the future
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  Reporter:  mojca        |      Owner:  macports-tickets@…
      Type:  enhancement  |     Status:  new
  Priority:  Normal       |  Milestone:
 Component:  base         |    Version:  2.3.4
Resolution:               |   Keywords:
      Port:               |
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Comment (by ryandesign):

 My understanding of United States law is that "public domain" is more
 ambiguous than a clear license like BSD which confers specific rights.

 You're right that libarchive links with liblzma so libarchive's "better"
 license may not be relevant.

 Recent versions of OS X provide a copy of liblzma and libarchive but there
 doesn't seem to be an OS copy of the xz executable. MacPorts currently
 handles decompression by running a separate executable. OS X's tar command
 links with libarchive so it should understand xz; we would just have to
 change MacPorts to decompress and extract the tarball as a single
 operation instead of two operations as it is currently.

 This ticket is not about hfsCompression; that's a separate matter.

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Ticket URL: <https://trac.macports.org/ticket/52000#comment:8>
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