Hey,

python3-invoke 3.0 is not compatible with fabric. As woraround please
update the dependencies.

With python3-invoke 3.0.3+ds-1:

% fab -H server createCsv
Traceback (most recent call last):
  File "/usr/bin/fab", line 33, in <module>
    sys.exit(load_entry_point('fabric==3.2.2', 'console_scripts', 'fab')())
             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
  File "/usr/lib/python3/dist-packages/invoke/program.py", line 398, in run
    self.execute()
    ~~~~~~~~~~~~^^
  File "/usr/lib/python3/dist-packages/invoke/program.py", line 583, in execute
    executor.execute(*self.tasks)
    ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/invoke/executor.py", line 141, in execute
    context = call.make_context(config, core_parse_result=self.core)
TypeError: ConnectionCall.make_context() got an unexpected keyword argument 'core_parse_result'

Downgrade to python3-invoke 2.2.0-2 resolves the issue. As workaround
until upstream fixed that -  please update the dependencies against
python3-invoke << 3.0 to have a working fabric.

Regards,

hefee

That won't achieve anything useful.  It will just make fabric
uninstallable and unable to migrate to testing, which would itself be an
RC bug.

While this has been fixed upstream
(https://github.com/fabric/fabric/commit/7fa309db9dd5dac69079c1fb83b6f579555f7d53),
apparently it's "(technically) backwards incompatible"
(https://github.com/fabric/fabric/commit/63f3d9bdadb7bd2c0b9eb67434a6237261e658f8).
I'm not sure what's best for Debian to do here.  Ideally we wouldn't
have upgraded to the new invoke until fabric had a matching release.
It's unfortunate that python-invoke made it to testing despite this; I
guess that's because fabric currently lacks autopkgtests.

CCing bdrung, who uploaded the new python-invoke.

That's very unfortunately. After looking at the fabric upstream repo I
think the best way forward is:

* package the upstream git main branch as 4.0.0~git$date
* run the upstream tests during build and as autopkgtest to avoid this
(invoke migrating and breaking fabric) to happen again

What do you think?

Maybe we should consult with upstream (CCed) before doing that.  I
notice that there haven't been any changes to git in a few months; is
there a plan for a 4.0 release soon?

(Another possibility would be to revert python-invoke to 2.x in Debian
for now, I guess.)

Thanks,

Another possibility, which I will embark on now, is to ship the fix as a
patch in the Debian package directly. A colleague tested it locally and
it seems to Work Fine, so I'm confident this will fix the issue.

The only problem now as I just uploaded 3.2.3 which tweaks the
dependencies to conflict with invoke 3.x, which would have been a fine
idea a while ago as it would have kept users from upgrading to invoke by
mistake, but now will make things more complicated. I will figure this
out.

This is also filed upstream in:

https://github.com/fabric/fabric/issues/2376

I have removed Jeff from CCs. He's granted me maintainer access on the
GitHub repo and I'm trying to reduce noise in his mailbox. I've opened
up a thread about that with him privately and I'm confident I will get a
response within a couple weeks which I will relay here.

A.

We believe that the bug you reported is fixed in the latest version of
fabric, 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 1142381@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Antoine Beaupré <anarcat@debian.org> (supplier of updated fabric 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: Tue, 11 Aug 2026 10:07:12 -0400
Source: fabric
Architecture: source
Version: 3.2.3-2
Distribution: unstable
Urgency: medium
Maintainer: Debian Python Team <team+python@tracker.debian.org>
Changed-By: Antoine Beaupré <anarcat@debian.org>
Closes: 1142381
Changes:
 fabric (3.2.3-2) unstable; urgency=medium
 .
   * Team upload.
   * add patch to fix compatibility with invoke 3.x (Closes: #1142381)
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