Kā zināms ArchLinux ir gandrīz visas jaunākās softu versijas, kas vispārīgā gadījumā ir super cool, bet ne vienmēr.
Ko darīt, ja vajag uzlikt vecāku versiju, šajā gadījumā libtorrent 1.2.19 ?

No root konta:
1) pacman -S base-devel
^ šis uzliek base-devel paku
2) pacman -R deluge qbittorrent-nox libtorrent-rasterbar
^ aizvācam deluge (2.1.1), qbittorent-nox (4.5.4) un libtorrent-rasterbar (2.0.9)

No juzera konta:
1) mkdir AUR_builds
2) cd AUR_builds
3) git clone https://aur.archlinux.org/libtorrent-rasterbar-1.git
4) curl -L -O https://aur.archlinux.org/cgit/aur.git/snapshot/libtorrent-rasterbar-1.tar.gz
5) tar -xvf libtorrent-rasterbar-1.tar.gz
6) git clone --branch libtorrent-rasterbar-1 --single-branch https://github.com/archlinux/aur.git
7) cd libtorrent-rasterbar-1
8. makepkg

No root konta:
9) pacman -U libtorrent-rasterbar-1-1.2.19-1-x86_64.pkg.tar.zst
10) pacman -S qbittorrent-nox
11) pacman -S deluge

Mēģinot palaist, redzam, ka rāda smuku kļūdu, kuru nepalīdz salabot pat maģiskais ldconfig.
[user@me~]$ qbittorrent-nox --version
qbittorrent-nox: error while loading shared libraries: libtorrent-rasterbar.so.2.0: cannot open shared object file: No such file or directory

Nu labi, kompilējam qbittorrent no sources no juzera konta un viss iet griezdamies.
The AUR is unsupported, so any packages you install are your responsibility to update, not pacman's. If packages in the official repositories are updated, you will need to rebuild any AUR packages that depend on those libraries.