nvidia is currently partially incompatible with linux >= 5.9  . While graphics should work fine, CUDA, OpenCL, and likely other features are broken. Users who've already upgraded and need those features are advised to switch to the linux-lts kernel for the time being until a fix for nvidia is available.
The ghostpcl and ghostxps packages prior to version 9.53.2-2 were missing a soname link each. This has been fixed in 9.53.2-2, so the upgrade will need to overwrite the untracked files created by ldconfig. If you get any of these errorsghostpcl: /usr/lib/libgpcl6.so.9 exists in filesystem ghostxps: /usr/lib/libgxps.so.9 exists in filesystem
when updating, usepacman -Syu --overwrite /usr/lib/libgpcl6.so.9,/usr/lib/libgxps.so.9
to perform the upgrade.