Tested on three clones of Arch Linux : Manjaro 24.0.3, CashyOS 0624, EneavourOS 0625 as advised in https://ostechnix.com/install-deepin-desktop-environment-arch-linux/
Make sure your clone of Arch Linux distribution is up-to-date.
$ sudo pacman -Syyu
Once the system is updated, reboot it to apply the new changes.
$ sudo reboot
Now, we need to install xorg (X Window System) that provides graphical environment.
$ sudo pacman -S xorg xorg-server
Finally, install Deepin desktop environment along with other required components using command:
$ sudo pacman -S deepin lightdm-deepin-greeter lightdm deepin-kwin
$ sudo nano /etc/lightdm/lightdm.conf
Find the following line:
#greeter-session=example-gtk-gnome
And, uncomment and change it as shown below. Or simply add it underneath the above line.
greeter-session=lightdm-deepin-greeter
$ sudo systemctl start lightdm.service
$ sudo systemctl enable lightdm.service
ArcoLinux Pro Double DE ( Cinnamon && Deepin)