Your message dated Wed, 09 Sep 2026 12:19:18 +0000
with message-id <[email protected]>
and subject line Bug#1146887: fixed in nibabel 5.4.2-5
has caused the Debian Bug report #1146887,
regarding nibabel: FTBFS against python 3.15rc2
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
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--
1146887: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1146887
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: src:nibabel
Version: 5.4.2-4
User: [email protected]
Usertags: python3.15
Tags: patch, ftbfs, forky, sid
Severity: important
Hi!
While rebuilding the python related packages against the Python 3.15rc2
version we found that nibabel fails to build from source [1].
The failure happens because test_DeterministicGzipFile and
test_DeterministicGzipFile_fileobj fail due to a discrepancy in the
default compression levels of gzip files, python 3.15 uses now
compresslevel=6
To fix this, I've made a patch to use None as the default compresslevel,
and let Python set it, instead of forcing it to 9.
I applied the fix in the sandbox [2] to be able to build the packages
that depend on nibabel, please consider applying the patch to support
the upcoming 3.15 version.
Setting the severity to important for now. Once Python 3.15 is released,
it will be added to python3-defaults and this bug will become release
critical.
Happy hacking,
[1]: https://debusine.debian.net/debian/r-python-python3.15/artifact/4478755/
[2]: https://debusine.debian.net/debian/r-python-python3.15/
--
"Can you imagine what I would do if I could do all I can?" -- Sun Tzu
Saludos /\/\ /\ >< `/
Description: Fix test failures with Python 3.15
In Python 3.15, gzip.GzipFile changed its default compresslevel from 9 to 6.
Allow DeterministicGzipFile to inherit the default compresslevel from GzipFile
when unspecified instead of hardcoding 9.
Author: Maximiliano Curia <[email protected]>
Forwarded: no
---
This patch header follows DEP-3: http://dep.debian.net/deps/dep3/
Index: nibabel/nibabel/_compression.py
===================================================================
--- nibabel.orig/nibabel/_compression.py
+++ nibabel/nibabel/_compression.py
@@ -82,7 +82,7 @@ class DeterministicGzipFile(gzip.GzipFil
self,
filename: str | None = None,
mode: Mode | None = None,
- compresslevel: int = 9,
+ compresslevel: int | None = None,
fileobj: io.FileIO | None = None,
mtime: int = 0,
):
@@ -99,19 +99,22 @@ class DeterministicGzipFile(gzip.GzipFil
raise TypeError('Must define either fileobj or filename')
# Cast because GzipFile.myfileobj has type io.FileIO while open returns ty.IO
fileobj = self.myfileobj = ty.cast('io.FileIO', open(filename, modestr))
+ kwargs = {}
+ if compresslevel is not None:
+ kwargs['compresslevel'] = compresslevel
super().__init__(
filename='',
mode=modestr,
- compresslevel=compresslevel,
fileobj=fileobj,
mtime=mtime,
+ **kwargs,
)
def gzip_open(
filename: str,
mode: Mode = 'rb',
- compresslevel: int = 9,
+ compresslevel: int | None = None,
mtime: int = 0,
keep_open: bool = False,
) -> gzip.GzipFile:
--- End Message ---
--- Begin Message ---
Source: nibabel
Source-Version: 5.4.2-5
Done: Andreas Tille <[email protected]>
We believe that the bug you reported is fixed in the latest version of
nibabel, 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 [email protected],
and the maintainer will reopen the bug report if appropriate.
Debian distribution maintenance software
pp.
Andreas Tille <[email protected]> (supplier of updated nibabel 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 [email protected])
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512
Format: 1.8
Date: Wed, 09 Sep 2026 13:44:37 +0200
Source: nibabel
Architecture: source
Version: 5.4.2-5
Distribution: unstable
Urgency: medium
Maintainer: Debian Med Packaging Team
<[email protected]>
Changed-By: Andreas Tille <[email protected]>
Closes: 1146887
Changes:
nibabel (5.4.2-5) unstable; urgency=medium
.
* Team upload.
.
[ Maximiliano Curia ]
* Fix test failures with Python 3.15
Closes: #1146887
.
[ Andreas Tille ]
* debhelper-compat = 14
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