AUR helpers automate usage of the Arch User Repository. In particular, they may automate the following tasks:
- searching for packages published on the AUR;
- resolving of dependencies between AUR packages;
- retrieve and build AUR packages;
-retrieve web content, such as user comments;
- submission of AUR packages.
Pacman only handles updates for pre-built packages in its repositories. AUR packages are redistributed in form of PKGBUILDs and need an AUR helper to automate the re-build process. However, keep in mind that a rebuild of package may be required when its shared library dependencies are updated, not only when the package itself is updated
https://wiki.archlinux.org/index.php/AUR_helpers
Ich weiß nicht ob du schon mal in so einen Abhängigkeitstunnel gekommen bist, aber falls ja ist der 2. Punkt manchmal gold wert ^^