You can eat a horse, and you water man. Man a eat, and you can day in a horse.

Good question. It could go either way - SDDM and PLM are different enough that any customisations you did on SDDM are at risk of breaking when going to PLM. So they either do it automatically and upset those with customisations that don’t work, or you keep it manual and upset those that don’t want to do it manually.

Given that CachyOS is more aimed at those more comfortable with the terminal (Arch-based) I tend to think it’ll remain manual.

For anyone else who was curious like me, there are manual steps required for existing installs to use the plasma login manager:

**Manual changes for existing users:**

KDE Plasma users with SDDM can now migrate to Plasma-Login-Manager. Please run:

sudo pacman -Syu plasma-login-manager
sudo systemctl disable sddm
sudo systemctl enable plasmalogin
sudo pacman -R sddm-kcm cachyos-themes-sddm sddm

After that you can use in Plasma Settings under the KCM “Apply Settings”.