Hi! While rebuilding the python related packages against the Python 3.15rc1 version we found that pypdf fails to build from source [1]. Upstream's commit 96ee6d5d6431396c0e88383fc338ce966b829d89 [2] updates the tests to support Python 3.15. I applied the upstream fix in the sandbox [3] to be able to build the packages that depend on pypdf, please consider applying the patch to support the upcoming 3.15 version. Happy hacking, [1]: https://debusine.debian.net/debian/r-python-python3.15/artifact/4421257/ [2]: https://github.com/py-pdf/pypdf/pull/3793/changes/96ee6d5d6431396c0e88383fc338ce966b829d89 [3]: https://debusine.debian.net/debian/r-python-python3.15/