Don't forget to recompile optimus-manager AUR after upgrading to python 3.9.0

[jonathon]

Also

[FAQ] An AUR package stopped working after an update

The normal reasons Generally, there will be two reasons why an AUR package has “stopped working”: A repo package was updated and the AUR package was built against an older (and incompatible) version of that repo package; The AUR package was updated and requires a repo package version not present on your system. The solutions to these: Rebuild the AUR package. Update your system fully. The other reasons The other, less frequent reasons, are The package file (PKGBUILD) has an issue and nee…