You may need to rebuild any Python packages you’ve installed from the AUR. To get a list of them, you can run:
pacman -Qoq /usr/lib/python3.9
And to rebuild them all at once with an AUR helper such as yay, you can do:
yay -S $(pacman -Qoq /usr/lib/python3.9) --answerclean All
But if any of the packages don’t work with Python 3.10 yet, this might fail halfway through and you’ll have to do rebuild the remaining ones one or a few at a time.
This is a wiki post; please edit as necessary.
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Please RTFT (Read This Fine Thread) first before reporting the same issues over and over again!
2022-01-03
New warnings when building the fallback initcpio - Possibly missing firmware for module: bfa, qed, qla1280, qla2xxx
That’s due to the recent changes to the linux-firmware package. Note these are warnings, not errors. You only need those firmwares if you have Mellanox Spectrum switches, Marvell devices, Qualcomm SoCs, Cavium LiquidIO server adapters, QLogic devices and Broadcom NetXtreme II 10Gb ethernet adapters. if you have that hardware you can install linux-firmware-qlogic to get rid of those warnings. If you do not have that hardware you can safely ignore those warnings.
pamac install linux-firmware-qlogic
2021-12-31
Python packages from PIP and AUR - how to upgrade them - detailed instructions
I got this message when launching some Qt5 dépendant apps (Digikam, kde-connect and Calibre at least) :
“Cannot mix incompatible Qt library (5.15.2) with this library (5.15.3)
Abandon (core dumped)”
It seams that QT5 was upgraded from 5.15.2 to 5.15.3 but all related apps where not rebuilt against this new version wich seems to be incompatible.
VLC, Smplayer, Digikam, kde-connect, Calibre, Kpat and I think, many other apps built with QT5 are in this case
Help!!! WTF are u doing there!!!
I found something: pyside2-tools stayed on 5.15.2 version wich is not compatible with QT5 5.15.3.
The pblm is that FreeCad needs it.
So, for the moment I removed FreeCad and pyside-tools and everything works properly.
The only thing I can do is to wait for an update of these package.
After updating, I’m getting a warning in Steam that integrated graphics are used. Judging from the performance of the game, I believe it. This is the output I’m getting from prime-run glxinfo | grep “OpenGL renderer”:
X Error of failed request: BadValue (integer parameter out of range for operation)
Major opcode of failed request: 152 (GLX)
Minor opcode of failed request: 24 (X_GLXCreateNewContext)
Value in failed request: 0x0
Serial number of failed request: 50
Current serial number in output stream: 51
Just really weird case. What I have done yesterday was just the last update, then all apps related to QT5 were not working and I had the message (Cannot mix incompatible Qt library (5.15.2) with this library (5.15.3)) . I removed the only thing that was on 5.15.2 version on my system (pyside2-tools) and all dependancies including FreeCad.
At this step, everything was working fine (exept Freecad )
Reading our posts I decided this morning to reinstall FreeCad and all his dependancies (including pyside2-tools-5.15.2)
Done
And…
Everything works fine :o !!!
Be aware, Firefox 98 has a bug in RDD sandboxing that kills vaapi based video decoding (on facebook, youtube, etc), and because of that your .mozilla/firefox/Crash Reports/pending/ folder will be filled with GB’s of unsent crash reports.
Hello, I can’t launch Qutebrowser and KeepassXC since the update.
Here’s the message i get with qutebrowser : CRITICAL: Cannot mix incompatible Qt library (5.15.2) with this library (5.15.3) Fatal Python error: Aborted
Here’s the one i get with keepassxc : Cannot mix incompatible Qt library (5.15.2) with this library (5.15.3) [1] 5705 IOT instruction (core dumped) keepassxc
I’m on Manjaro i3.
Yes, I did reboot the system. Any solutions? Thanks.
Bis repetita
Same problem on a second computer
When I launche any QT5 apps I get this message:
“Cannot mix incompatible Qt library (5.15.2) with this library (5.15.3)
Abandon (core dumped)”
I tried to do the same as for the first computer (removed pyside2) but it doesn’t work this time.
I tried to reboot several time as well. Useless.
Anyone has an idea?
EDIT: I had qt5-styleplugins from AUR package.
Removed then rebuilt and all is OK now
Seems like I also had a problem with qt5-styleplugins! I didn’t even remember that I had this package installed.
Thanks for updating your post and letting us know!
You may need to rebuild any AUR packages that install files to site-packages … 
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