[BUG] Incompatibility with Python 3.12

[IGLOU-EU]

Contact Details

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Description

Hi,
When attempting to enable the CAD_Sketcher addon in Blender 4.3.1, the following error occurs:

Traceback (most recent call last):
  File "/usr/share/blender/4.3/scripts/modules/addon_utils.py", line 358, in enable
    raise RuntimeError("Extension {:s} is incompatible ({:s})".format(module_name, error))
RuntimeError: Extension bl_ext.user_default.CAD_Sketcher is incompatible (This Python version (3.12) isn't compatible with (3.11))

• Blender Version: 4.3
• Python Version: 3.12.7

Thanks :)

Addon Version

latest

Blender Version

4.3.1

What platform are you running on?

Linux

[IGLOU-EU]

This issue is likely due to the absence of a wheel compatible with Python 3.12. Currently, all available wheels are built for Python 3.11:

py_slvs-1.0.6-cp311-cp311-musllinux_1_1_x86_64.whl
py_slvs-1.0.6-cp311-cp311-manylinux_2_17_x86_64.manylinux2014_x86_64.whl
py_slvs-1.0.6-cp311-cp311-win32.whl
py_slvs-1.0.6-cp311-cp311-macosx_10_9_universal2.whl
py_slvs-1.0.6-cp311-cp311-win_amd64.whl
py_slvs-1.0.6-cp311-cp311-macosx_10_9_x86_64.whl
py_slvs-1.0.6-cp311-cp311-musllinux_1_1_i686.whl
py_slvs-1.0.6-cp311-cp311-macosx_11_0_arm64.whl
py_slvs-1.0.6-cp311-cp311-musllinux_1_1_aarch64.whl
py_slvs-1.0.6-cp311-cp311-manylinux_2_17_aarch64.manylinux2014_aarch64.whl
py_slvs-1.0.6-cp311-cp311-manylinux_2_17_i686.manylinux2014_i686.whl

Related issue: realthunder/slvs_py#10

[IGLOU-EU]

I was able to "solve" the issue by rebuilding py_slvs for Python 3.12 (cp312) or by duplicating/renaming an existing cp311 wheel in cp312, and declaring it in blender_manifest.toml.

[mj1911]

In my case (Arch linux) the system Python upgrade to 3.12 removed py-slvs. So had to reinstall that first. Then there was no way to remove the existing CAD Sketcher plugin... manually deleted /home/me/.config/blender/4.3/extensions/user_default/CAD_Sketcher and refreshed plugins. Then as you said, renamed the wheels and modified the manifest and it would install. Unsure how stable this is, but it seems to be working. If anyone else cares to try, the modified file can be found at: https://github.com/mj1911/misc/blob/main/CAD_Sketcher_0.27.61.zip