Problems updating with yay -Syu

[Kresimir]

==> Diffs to show?
==> [N]one [A]ll [Ab]ort [I]nstalled [No]tInstalled or (1 2 3, 1-3, ^4)

Asks you whether you want to see the differences in the PKGBUILD file between the old and new version. If you do not know what that is, you should probably not be using the AUR, until you learn a bit more about it.

The PKGBUILD file is a script that runs when the package is built. It contains instructions (bash commands) on how to build and install a package. It is always a good idea to inspect it and to understand what it does, as it may contain malicious or untrustworthy code (as rare as that is).

I have a post giving you some advice on what to look for in a PKGBUILD file:

AUR PKGBUILDs

The AUR is one of the safest ways to install software, just because it is so transparent. But it does not tolerate just looking up the package in Pamac and clicking on the Build button, or doing yay package_name blindly. It requires that the user knows what’s going on. That’s why I recommend trying to build at least one package manually, to understand what’s going on, before using an AUR helper like pamac or yay. yay has a nice feature that allows you to inspect a PKGBUILD file before installin…

My advice is to read up on the AUR on the Arch Wiki, and here on the forum. It’s quite a rabbit hole, but it’s worth learning that stuff.

If you completely trust the AUR package (something I would never advise you to do), you can answer N for none to the question above, and not look at the PKGBUILD file. You do this at your own risk, of course.