[Bug 1923845] Re: Please compress packages with zstd by default

[Dimitri John Ledkov]

# file perl-base_5.32.1-3ubuntu2_amd64.deb 
perl-base_5.32.1-3ubuntu2_amd64.deb: Debian binary package (format 2.0), with control.tar.zs, data compression zst


Looks odd

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Title:
  Please compress packages with zstd by default

Status in dpkg package in Ubuntu:
  New

Bug description:
  [dpkg]
  Decompression support in dpkg landed first in Bionic and is being SRUd to Xenial in LP: #1764220 enable Launchpad's Xenial systems to process the zstd-compressed binary packages.
  From dpkg's perspective the upgrade path is cleared.

  The original plan was compressing only the internal data.tar .deb
  member, but dpkg uses uniform compression by default since dpkg 1.19.0
  thus I'm collecting all the changes to support control.tar.zst, too,
  in this bug.

  
  TODO:
  Process:
  https://codesearch.debian.net/search?q=data.tar.xz&literal=1&perpkg=1
  https://codesearch.debian.net/search?q=control.tar.xz&literal=1&perpkg=1

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