Mageia
Supports Mageia 9 and Cauldron.
Open a Terminal and run these commands. Change the release version if necessary:
sudo dnf config-manager --add-repo https://download.opensuse.org/repositories/hardware:/razer/Mageia_8/hardware:razer.repo
sudo dnf install polychromatic
For binary packages and instructions, visit the openSUSE Build Service.
Next up, OpenRazer
Polychromatic is just a frontend. If you haven't already, you'll need to install this driver and daemon: