I use CachyOS and alternate between yay and paru depending on whichever installation instructions I find. I mainly use them to install, update, and remove repository packages and AUR packages, and I do not intentionally switch between them for any special features. I understand the basics of pacman, AUR packages, PKGBUILDs, and the difference between native packages and alternatives such as Flatpak. I also try to avoid suspicious or orphaned AUR packages. Does switching between yay and paru cause any system problems, slowdowns, or other issues, or is it mostly a matter of preference?
3 Answers
For ordinary install, upgrade, and removal operations, switching between the two is generally fine. They are largely pacman front ends rather than completely separate package managers. Just avoid mixing helpers with unusual options you do not understand, keep your system updated consistently, and inspect AUR build files when a package is unfamiliar.
You are not going to hurt your system simply by alternating between yay and paru. Both are established AUR helpers that ultimately use pacman and the system package database, so installed packages are not tied to one helper. The important part is reviewing PKGBUILDs and understanding commands before running them, especially for AUR software. The helper itself is much less significant than the package source and the commands you approve.
The main practical difference is that yay and paru maintain separate download or build caches. If you use both regularly, you may keep duplicate package files and build data, which can waste some disk space. It does not normally make the installed system slower or less stable, though, and clearing the caches removes most of that concern.
That makes sense. My concern was only that I never deliberately choose between them when installing AUR packages, not that I blindly run arbitrary commands.