build_extension.py: bundle python3.14

[Scafir]

Since newer releases, blender requires the use of python3.14

I tested it working on my machine (fedora flatpak, blender 5.1.1, fedora 44)

[dnltz]

You need to sign your commit with a signed-off-by.

[dnltz]

Hey, the existing comment is wrong. Blender 5.1 switched to Python 3.13: https://developer.blender.org/docs/release_notes/5.1/

I can't see that Blender 5.1.1 switched to Python 3.14. Did you run in any issues?

[Scafir]

Hi, sorry about the wrong comment, I should have checked better when Blender officially switched python versions.

Nonetheless, the fedora flatpak version seems to be using 3.14:

> flatpak list --app | grep -i blender
Blender	org.blender.Blender	5.1	stable	fedora	system

On the main flathub version, the plugin installs without issues:

> flatpak list --app | grep -i blender
Blender	org.blender.Blender	5.1	stable	flathub	system

So this issue seems to be specifically for the fedora's flatpak version.
I will edit my commit to sign it and to correct the comment.

[dnltz]

@Scafir thanks for those additional information. I did some more research and those flatpak packages are not officially mainted by the Blender Foundation. The second screenshot also shows that there is clearly something wrong with this package, because Date, Hash and Branch are missing. Additionally, Blender is untested wiith Python3.14 and no other extension will work with this package.

Adding Python here is a workaround for a broken package. You should raise this issue at the fedora flatpak repo.

[Scafir]

That makes sense, thanks for your input. I have raised the issue in https://forge.fedoraproject.org/flatpak/tickets/issues/69

I will now close this merge request, you are right that it should not be merged.