Debian Sid - Default Python is now python3.13

[adamnew123456]

Describe the bug

apt install xpra on an up-to-date Sid install fails now that python3 points to Python 3.13:

xpra-common : Depends: python3 (< 3.13) but 3.13.1-2 is to be installed

Additional context

• 3.13 was made the default in Sid about a week ago. It should flow down to Trixie by the end of the week, if it would be easier to update both in one shot:

python3-defaults (3.13.1-1) unstable; urgency=medium

  * Upload to unstable.

 -- Matthias Klose <doko@debian.org>  Tue, 07 Jan 2025 10:39:13 +0100

• If Debian Trixie and Sid fail to build the CUDA kernels with clang #4424 is a blocker, I'd be willing to look at it in more depth. nvidia-cuda-toolkit works locally after replacing -std=c++11 with --std=c++14 and futzing with clang versions. I haven't tested this setup on Trixie or Ubuntu yet, but it can probably be made to work if the supported CUDA toolkit versions are not too different.

[totaam]

if it would be easier to update both in one shot

The dependency is automatically generated at build time, not something that is set anywhere.

The buildbot is still busy with the 6.2.3 builds.
This does mean that the stable repo probably has python3.13 builds, at least for Sid.

The CUDA thing is not an issue, in 6+ we build the CUDA kernels once before the build and include them in the source archive handed over to the build containers.

[vasvir]

debian unstable/sid here.

I think I have correctly setup the beta channel.

apt install xpra
tries to install 6.3-r36942-1 but it requires python < 3.13

Hope that helps

[totaam]

@vasvir the newest builds are in the stable repo, not beta.

[vasvir]

The instructions in https://github.com/Xpra-org/xpra/wiki/Download#-for-debian-based-distributions
suggests to use the xpra-beta.sources for sid.

Must have been misunderstood something.

[totaam]

Must have been misunderstood something.

As per the comment above (#4473 (comment)), the buildbot is busy with the 6.2.3 release builds, so the builds in stable are newer than beta and therefore the only place where you can get builds against the newer python version that Sid and Trixie just updated to.

[totaam]

The 6.2.3 builds have completed and now we also have 6.3-r37180 in the beta repositories.