[sneezing_subsystem]

Sadly, on Ubuntu (and it's derivatives) Flatpak is the only available option now, since apparently the sole maintainer stepped down a while ago...
https://kodi.wiki/view/HOW-TO:Install_Ko...ux?https=1

Please note that currently the Team Kodi PPA is not maintained due to the previous sole maintainer stepping away from the responsibility.
For now the only options are building from source, using Flatpak or a distro such as Debian which includes Kodi in their distribution.

[yawningapples1]

I do not use this addon as I use AEL to launch Steam as well other external program, but hopefully this helps some people here to want to make it work with Flatpak. I modified my local version of AEL so that the external application is launched with 'flatpak-spawn --host'. Then in flatseal I added a dbus session talk permission with org.freedesktop.Flatpak

So something like this will do

cmd= ['flatpak-spawn','--host'] + cmd
process = subprocess.Popen(cmd)

see here:
https://docs.flatpak.org/en/latest/flatp...tpak-spawn