Install Dropbox on Arch based Linux systems is very simple. First of all make sure that on Your system installed GIT, if not install git by command:
sudo pacman -S git
*If you already installed git , you don’t no need.
Now clone Dropbox git repository:
git clone https://aur.archlinux.org/dropbox.git
Go to Dropbox folder:
cd dropbox/
And compile the code by command:
makepkg -si
It’ll take some time so wait for it. If fails to build gpg key then just copy the key and type:
gpg --recv-keys YOUR-KEY
Then again press makepg -si.