Dear maintainer:

During a rebuild of all packages in unstable, this package failed to build.

Below you will find the last part of the build log (probably the most
relevant part, but not necessarily). If required, the full build log
is available here:

https://people.debian.org/~sanvila/build-logs/202609/

About the archive rebuild: The build was made on virtual machines from AWS,
using sbuild and a reduced chroot with only build-essential packages.

If you cannot reproduce the bug please contact me privately, as I
am willing to provide ssh access to a virtual machine where the bug is
fully reproducible.

If this is really a bug in one of the build-depends, please use
reassign and add an affects on src:sphinx-book-theme, so that this is still
visible in the BTS web page for this package.

Thanks.
--------------------------------------------------------------------------------
[...]
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/pyproject_hooks/_impl.py", line 399, in _call_hook
    raise BackendUnavailable(
    ...<4 lines>...
    )
pyproject_hooks._impl.BackendUnavailable: Cannot import 'setuptools.build_meta'

TIP pass --env-dir and --sdist-extract-dir to keep the build environment and sources, then see https://build.pypa.io/en/stable/how-to/troubleshooting.html#debug-a-failed-build for help debugging a failed build
ERROR Backend 'setuptools.build_meta:__legacy__' is not available.
E: pybuild pybuild:485: build: plugin pyproject failed with: exit code=1: python3.14 -m build --skip-dependency-check --no-isolation --wheel --outdir /<<PKGBUILDDIR>>/.pybuild/cpython3_3.14_sphinx-book-theme
dh_auto_build: error: pybuild --build -i python{version} -p 3.14 --parallel=1 returned exit code 13
make: *** [debian/rules:14: binary] Error 25
dpkg-buildpackage: error: debian/rules binary subprocess failed with exit status 2
--------------------------------------------------------------------------------

Hello,

Bug #1149489 in sphinx-book-theme reported by you has been fixed in the
Git repository and is awaiting an upload. You can see the commit
message below and you can check the diff of the fix at:

https://salsa.debian.org/python-team/packages/sphinx-book-theme/-/commit/03dd6dbdd5a81086a112c6aab8705c90b30b0875
------------------------------------------------------------------------
Build-depend on python3-setuptools

Closes: #1149489
------------------------------------------------------------------------

(this message was generated automatically)
-- 
Greetings

https://bugs.debian.org/1149489

We believe that the bug you reported is fixed in the latest version of
sphinx-book-theme, 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 1149489@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Colin Watson <cjwatson@debian.org> (supplier of updated sphinx-book-theme 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: Wed, 30 Sep 2026 14:11:54 +0100
Source: sphinx-book-theme
Architecture: source
Version: 1.2.0-2
Distribution: unstable
Urgency: medium
Maintainer: Debian Python Team <team+python@tracker.debian.org>
Changed-By: Colin Watson <cjwatson@debian.org>
Closes: 1149489
Changes:
 sphinx-book-theme (1.2.0-2) unstable; urgency=medium
 .
   * Team upload.
   * Build-depend on python3-setuptools (Closes: #1149489)
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Checksums-Sha256:
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Files:
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 d4afbd6a6debdaa0e4d0440944720b23 16440 python optional sphinx-book-theme_1.2.0-2.debian.tar.xz
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Git-Tag-Info: tag=2ae3b96a004477f4c7ddb8c6525d1c10502b3fd5 fp=ac0a4ff12611b6fccf01c111393587d97d86500b
Git-Tag-Tagger: Colin Watson <cjwatson@debian.org>
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