cdm (console display manager) on slackware
 

Has anyone installed and used cdm?
https://wiki.archlinux.org/index.php/CDM

How to do it?

There's a git repository here:
https://github.com/ghost1227/cdm

Presumably you would then just run the install script included, put it at the top or /etc/rc.d/rc.4 and configure it as the Archwiki says.

Just running the install script is never a good idea. There is a reason for package management.

Have a look at:

https://aur.archlinux.org/packages/cd/cdm-git/PKGBUILD

should be brainless to make your own package following that or better yet writing your own slackbuild? and maybe sharing via sbo!

http://slackbuilds.org/guidelines
http://docs.slackware.com/slackware:slackbuild_scripts ( notice the tutorial )

If you choose to submit you also might want to have a look at this or sed -e 's/slim/cdm/g' README.SLACKWARE ?

http://slackbuilds.org/repository/14.0/system/slim/