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Cyao

Member

Registered: 2024-06-22

Posts: 5

[Solved] FreeCAD missing libshiboken6.abi3.so.6.9 library

Hello everyone!

I've opened up FreeCAD today and was met with a error:

During initialization the error "libshiboken6.abi3.so.6.9: cannot open shared object file: No such file or directory" occurred in /usr/lib/freecad/Mod AddonManager/InitGui.py

This never occurred before and disactivated the plugin manager and all my plugins!

I've already installed the newest `shiboken6` package and I've tried to search for the lib online and via `pacman -F libshiboken6.abi3.so.6.9` but I found nothing so far

Does anyone know what caused this/which package has this lib? Thanks!

Last edited by Cyao (2025-09-02 09:23:07)

Head_on_a_Stick

Member

From: The Wirral

Registered: 2014-02-20

Posts: 8,999

Website

Re: [Solved] FreeCAD missing libshiboken6.abi3.so.6.9 library

Have you tried

pacman -Syu

Partial upgrades can cause soname errors.

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Jin, Jîyan, Azadî

Cyao

Member

Registered: 2024-06-22

Posts: 5

Re: [Solved] FreeCAD missing libshiboken6.abi3.so.6.9 library

Yep, I've updated my system and nothing changed :c I'm sure that I don't have a partial upgrade too

Head_on_a_Stick

Member

From: The Wirral

Registered: 2014-02-20

Posts: 8,999

Website

Re: [Solved] FreeCAD missing libshiboken6.abi3.so.6.9 library

Does FreeCAD work if you remove all mods? Looks like it's either a mod or the "AddonManager" that's causing the problem.

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Jin, Jîyan, Azadî

Cyao

Member

Registered: 2024-06-22

Posts: 5

Re: [Solved] FreeCAD missing libshiboken6.abi3.so.6.9 library

Problem is that I cannot remove all the addons without the addon manager. Plus the AddonManager is a built-in feature of FreeCAD

Head_on_a_Stick

Member

From: The Wirral

Registered: 2014-02-20

Posts: 8,999

Website

Re: [Solved] FreeCAD missing libshiboken6.abi3.so.6.9 library

A quick search suggests that user mods are installed under ~/.local/share/FreeCAD. Try moving that directory or some of it's contents elsewhere.

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Jin, Jîyan, Azadî

arojas

Developer

From: Spain

Registered: 2011-10-09

Posts: 2,242

Re: [Solved] FreeCAD missing libshiboken6.abi3.so.6.9 library

How did you install FreeCAD? Post the output of

pacman -Qikk freecad

Cyao

Member

Registered: 2024-06-22

Posts: 5

Re: [Solved] FreeCAD missing libshiboken6.abi3.so.6.9 library

A quick search suggests that user mods are installed under ~/.local/share/FreeCAD. Try moving that directory or some of it's contents elsewhere.

Just tried that! But nothing changed unfortunately. The same errors still pop up

pacman -Qikk freecad

➜  FreeCAD pacman -Qikk freecad
Name            : freecad
Version         : 1.0.2-2
Description     : Feature based parametric 3D CAD modeler
Architecture    : x86_64
URL             : https://freecadweb.org/
Licenses        : LGPL-2.0-only
Groups          : None
Provides        : None
Depends On      : boost-libs  coin  fmt  glew  libspnav  med
                  opencascade  openmpi  pugixml  pyside6
                  yaml-cpp  python-markdown
                  python-matplotlib  python-pip  python-pivy
                  python-ply  python-yaml  qt6-svg
                  qt6-tools  verdict  vtk  xerces-c
Optional Deps   : graphviz: dependency graph support
                  [installed]
                  opencamlib: CAM workbench support
                  openscad: OpenSCAD support
                  python-ladybug-core: Solar/Wind diagram
                  support
Required By     : None
Optional For    : None
Conflicts With  : None
Replaces        : None
Installed Size  : 298.95 MiB
Packager        : Sven-Hendrik Haase
                  <svenstaro@archlinux.org>
Build Date      : Fri 08 Aug 2025 03:28:40 PM CEST
Install Date    : Sat 09 Aug 2025 02:15:31 PM CEST
Install Reason  : Explicitly installed
Install Script  : No
Validated By    : Signature

freecad: 3424 total files, 0 altered files

Scimmia

Fellow

Registered: 2012-09-01

Posts: 13,084

Re: [Solved] FreeCAD missing libshiboken6.abi3.so.6.9 library

How about `pacman -Q pyside6 shiboken6 python` and `type -a python python3`

loqs

Member

Registered: 2014-03-06

Posts: 18,631

Re: [Solved] FreeCAD missing libshiboken6.abi3.so.6.9 library

If Scimmia's suggestion does not turn up any leads I would suggest `type -a FreeCAD` `LD_DEBUG=files FreeCAD` and if that fails to produce any additional output `strace -f --trace=%file FreeCAD`

Last edited by loqs (2025-09-01 15:39:42)

Cyao

Member

Registered: 2024-06-22

Posts: 5

Re: [Solved] FreeCAD missing libshiboken6.abi3.so.6.9 library

Thanks a ton for the lead loqs! I've found the error now:

Turns out that there was an additional pyside6 installation at `/home/cyao/.local/lib/python3.13/site-packages/PySide6`, deleting that directory worked I have no idea how an user python package got installed lol.

seth

Member

From: Don't DM me only for attention

Registered: 2012-09-03

Posts: 69,157

Re: [Solved] FreeCAD missing libshiboken6.abi3.so.6.9 library

Please always remember to mark resolved threads by editing your initial posts subject - so others will know that there's no task left, but maybe a solution to find.
Thanks.

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