how to install arch linux and install any desktop environment afterwards HD

We are going to install arch linux (base system) - no xorg, display drivers, desktop etc... and stop there . Tutorial is part of this article : http://erikdubois.be/install-arch-linux-virtualbox-linux-mint-18-1/ Other tutorials will then install Budgie, Gnome, Xfce, ... We will do it in virtual box so I can film the installaton on a linux mint 18.1 cinnamon. Choices for desktop environments are: Budgie : http://erikdubois.be/how-to-install-budgie-on-arch-linux/ Cinnamon : Deepin : Enlightenment : Gnome : Gnome flashback : i3 : http://erikdubois.be/how-to-install-i3wm-on-arch-linux/ Kde Plasma : Lxde : Lxqt : Mate : Xfce : Github of Erik Dubois https://github.com/erikdubois Youtube Channel https://www.youtube.com/channel/UCJdmdUp5BrsWsYVQUylCMLg