[Bug 2133153] [NEW] cloudpickle FTBFS with python 3.14

Launchpad Bug Tracker 2133153 at bugs.launchpad.net
Thu Nov 27 09:54:15 UTC 2025


You have been subscribed to a public bug by Eduardo Barretto (ebarretto):

cloudpickle version 3.1.1-2 fails to build from source with python3.14, as can be seen in here:
https://launchpad.net/ubuntu/+source/cloudpickle/3.1.1-2

This issue was fixed in upstream in version 3.1.2, which currently isn't
available in Debian.

I've applied the necessary patches on top of 3.1.1-2 and tried a build and it now passes. Attached is the debdiff and the build can be found here:
https://launchpad.net/~ebarretto/+archive/ubuntu/devel-testing/+packages?field.name_filter=cloudpickle&field.status_filter=published&field.series_filter=

It didn't pass for amd64v3, not sure if that is really an issue.

This should end up fixing the proposed migration of pydantic and zabbix-
cli, and perhaps some others too.


Debian will be impacted by this issue too when they transition to python3.14. I will be reporting this also to them.

** Affects: cloudpickle (Ubuntu)
     Importance: Undecided
         Status: New

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cloudpickle FTBFS with python 3.14
https://bugs.launchpad.net/bugs/2133153
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