python3-backports-std is a backport of functionality that is included
in Python 3.14

It fails to build with python3-defaults in experimental which will be
uploaded to unstable soon to start the Python 3.14 transition.

There are 3 or 4 packages with Build-Depends: python3-backports.zstd
that need to be fixed for this package to be removed from Unstable.

Thank you,
Jeremy Bícha

I uploaded numcodecs, python-urllib3, and smart-open to add
"python3-supported-min (>= 3.14)" Build-Depends alternatives.  I think
that's the complete set.

Build-Depends alternatives aren't resolved when building for unstable,
so we'll have to upload those packages again when the transition is
ready to go, but I don't think there's a better option available (unless
somebody figures out how to get python-backports.zstd to build with 3.14
temporarily).  Still, at least the python3-supported-min alternatives
will act as reasonably clear signposts for what we need to do.

Hello,


Here is upstream discussion of this issue.

Hello,

I adds some fixup to build python-backports.zstd on current
experimental suite and python3==3.14.2-1 .

But I don't have upload permission for this package.
So, please upload python-backports.zstd 1.3.0+ds-2 from salsa.

https://salsa.debian.org/python-team/packages/python-backports.zstd

In future, please leave it to your sponsor to finalize the changelog;
they may want to make other changes, or to ask you to do so.

I don't see how this upload will fix the bug you say that it fixes.  A
test build shows that it still only builds the extension for Python
3.13, most likely due to `requires-python` in pyproject.toml.

(For the time being, I haven't uploaded this.)

Thanks,

Hello Colin,

python-backports.zstd 1.3.0+ds-1 was fails to build when Debian's
default python version is not 3.13.
1.3.0+ds-2 fixes this bug.

Hello,

Sorry, my patch fixes something, but not fix this issue.
So I rewrite my patch in salsa to not close this bug report 1130913.

OK, thanks for the update.  I've tagged and uploaded your changes.

Hello Colin,

I add some hack to salsa to allow install with python3 >= 3.14, and
avoid from auto-removal the package.
https://salsa.debian.org/python-team/packages/python-backports.zstd

I will also send ROM request when Debian drops Python 3.13 from python3 package.

Please finalize changelog, close this bug and upload to Debian if it's OK.

Hello,

The RC bug was fixed by
https://salsa.debian.org/python-team/packages/python-backports.zstd/-/merge_requests/1
.

Please upload new package to Debian if it seems well.
https://salsa.debian.org/python-team/packages/python-backports.zstd

Thanks.  Most of this looks OK.

I can't understand why
https://salsa.debian.org/python-team/packages/python-backports.zstd/-/commit/0da5ed3fad67ba97fd8c881c6c61c0b722f58fd6
makes sense, though.  The linked bug isn't saying that _all_ Python
packages must build-depend on python3-setuptools-scm; it's only saying
that those packages that use setuptools_scm in their upstream build
system must do so.  This package does not use setuptools_scm.  So what's
the point of this extra build-dependency?  I ran builds both with and
without it and it makes no difference to the resulting package, although
including the build-dependency does cause this new warning:

  toml section missing PosixPath('pyproject.toml') does not contain a tool.setuptools_scm section

If you fix this, please do it in such a way that you can do a normal git
push, not a force-push.  I noticed previously that you were
force-pushing to this branch quite a lot; that's OK in your own
work-in-progress branch that's the source of a merge proposal, but I
don't think we should be doing it to primary packaging branches that
other developers are likely to have checked out.

Thanks,

Hello Colin,

Thank you for your review.
I add fixup to salsa.

Thanks.  I've uploaded this.

We believe that the bug you reported is fixed in the latest version of
python-backports.zstd, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 1130913@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
YOKOTA Hiroshi <yokota.hgml@gmail.com> (supplier of updated python-backports.zstd package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)
Format: 1.8
Date: Fri, 17 Apr 2026 10:36:31 +0100
Source: python-backports.zstd
Architecture: source
Version: 1.3.0+ds-3
Distribution: unstable
Urgency: medium
Maintainer: Debian Python Team <team+python@tracker.debian.org>
Changed-By: YOKOTA Hiroshi <yokota.hgml@gmail.com>
Closes: 1130913
Changes:
 python-backports.zstd (1.3.0+ds-3) unstable; urgency=medium
 .
   * Team upload.
 .
   [ Stuart Prescott ]
   * Force package to be installable with Python 3.14 (although it will not
     be usable; stdlib's in-build zstd support should be used instead).
     (Closes: #1130913)
 .
   [ YOKOTA Hiroshi ]
   * Upgrade Debian policy standards to 4.7.4
   * Fix egg-info path in extend-diff-ignore
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