[Bug 2144669] [NEW] 2.6.3-1 depends on nonexistant python3-backports.zstd

Kat Kuo 2144669 at bugs.launchpad.net
Tue Mar 17 15:49:24 UTC 2026


Public bug reported:

The latest version of `python-urllib3`, 2.6.3-1, has been stuck in
proposed due to python3-backports.zstd being a missing dependency.
python3-backports.zstd however, is a backport of ZSTD which is included
in Python 3.14, it's only used for Python 3.13 and under. python-urllib3
itself works without python3-backports.zstd on Python 3.14; it's just
required for older versions of Python.

Following some discussion, for now it is probably best to create an
Ubuntu delta and drop the `python3-backports.zstd` and min-ver Python
3.14 given that it is a little late to new package
`python3-backports.zstd` and sync from upstream.

** Affects: python-urllib3 (Ubuntu)
     Importance: Undecided
     Assignee: Kat Kuo (kkuo)
         Status: In Progress

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https://bugs.launchpad.net/bugs/2144669

Title:
   2.6.3-1 depends on nonexistant python3-backports.zstd

Status in python-urllib3 package in Ubuntu:
  In Progress

Bug description:
  The latest version of `python-urllib3`, 2.6.3-1, has been stuck in
  proposed due to python3-backports.zstd being a missing dependency.
  python3-backports.zstd however, is a backport of ZSTD which is
  included in Python 3.14, it's only used for Python 3.13 and under.
  python-urllib3 itself works without python3-backports.zstd on Python
  3.14; it's just required for older versions of Python.

  Following some discussion, for now it is probably best to create an
  Ubuntu delta and drop the `python3-backports.zstd` and min-ver Python
  3.14 given that it is a little late to new package
  `python3-backports.zstd` and sync from upstream.

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