I just recently completed building my first copr RPM package, which was CDE against CentOS 8.2, because the RPM listed on the Wiki no longer exists. It would be great if the moderators updated the link to my COPR. You can directly install CDE by doing the following: su dnf copr enable nzieses/CDE yum install cdesktopenv reboot, choose CDE as the desktop, and enjoy!!!