Currently, I'm attempting to install desktop-related packages, like so:

xbps-install cinnamon NetworkManager network-manager-applet wireless-tools 
nano

I've tried repo, repo2, and repo3

repo, repo2 and repo3 each result in an "Unkown resolver error" while 
attempting to download dependencies dbus-1.8.14_2 and nspr-4.10.7_1

I've double-checked the contents of /etc/resolv.conf, and it looks correct.