qbittorrent is available in the new repository, I wanted to try it out since transmission is limited in a number of ways.
Unfortunately, that package has many dependencies that aren't plug appropriate and includes the non-headless components such as qt.
pacman -S qbittorrent
resolving dependencies...
looking for inter-conflicts...
Targets (11): xdg-utils-1.1.0rc1-1 libmng-1.0.10-3 randrproto-1.3.2-1
libxrandr-1.3.1-1 videoproto-2.3.1-1 libxv-1.0.6-1
hicolor-icon-theme-0.12-1 qt-4.7.1-3.1 boost-libs-1.45.0-1
libtorrent-rasterbar-0.15.5-1 qbittorrent-2.6.6-1
Total Download Size: 27.47 MB
Total Installed Size: 139.45 MB