Been trying to do this for a couple hours now. Been trying to add an entry to my login sessions on SDDM. I see entries for Gnome and Plasma in /usr/share/wayland-sessions/ and they show up in SDDM. I added another desktop file called steam.desktop (shown below) which runs a script with a single command that I am able to run successfully in a TTY with no issues.
Problem is that I cannot get it to show up in SDDM at all pretty much no matter what I do. From what I am reading, adding a new .desktop file to the wayland sessions folder. Cannot seem to figure out why SDDM refuses to acknowledge it.
Anyone have any insight? Thank you
[Desktop Entry]
Type=WaylandSession
Exec=/usr/bin/gamescope-steam
TryExec=/usr/bin/gamescope-steam
Name=Gamemode
Comment=Placeholder
DesktopNames=Steam