On Fri, Jan 10, 2025 at 07:40:08PM +0500, Andrey Rakhmatullin wrote: > On Fri, Jan 10, 2025 at 02:05:06PM +0000, Julian Gilbey wrote: > > Hi all, > > > > Just to let you know that Matthias and Stefano upload python3-defaults > > 3.13.1 to unstable earlier this week, making Python 3.13 the default. > > I just got a FTBFS bug report which turned out to be because the build > > used python3 to perform an action, and python3.12 succeeds on this but > > python3.13 fails. It took me a while to discover the cause, so just > > wanted to share this information to save other people time if they > > receive similar FTBFS reports. > > Yup. You can watch the progress on > https://release.debian.org/transitions/html/python3.13-default.html and it > looks less problematic than the 3.13-add transition but still has quite a > lot of new blocking bugs.
Thanks Andrey! My package (jupyter-client) isn't listed there, as the (binary) dependency is on python3:any. But the build turns out to succeed when python3 -> python3.12 but fail when python3 -> python3.13 - it's sphinx-build that fails. I still haven't solved the bug, but at least I know which change has caused the breakage. Best wishes, Julian
