Also: If it says “in conflict”, and asks for user input, it means it will either replace the conflicting package, as the package you install provides the same things, or that it will only remove something you manually installed (I don’t know if that’s correct though). If it would remove a dependency of something else, without replacing that with something that provides the same, it would error out noting that there are unsolvable conflicts, as far as I know. That almost never happens though, as the whole pacman and AUR ecosystem are very well balanced, a bit less on testing repos.