Different ways to install kolibri on Ubuntu and Debian, but only one way to install kolibri-server (pre-release), which resemble the Ubuntu installation. To install kolibri-server on Debian, I’m guessing I somehow need to point to the Launchpad PPA?
there’s no difference on the way to install it in Debian or Ubuntu, you can either install the ppa or just adding manually the repo to a sources.list file. Read the kolibri-server install instructions here.
Beware the repo is still kolibri-proposed, not kolibri as those instructions explain. kolibri-server has not been moved to the main kolibri repo yet.
I.e.
echo "deb http://ppa.launchpad.net/learningequality/**kolibri-server**/ubuntu cosmic main" > /etc/apt/sources.list.d/learningequality-ubuntu-kolibri-cosmic.list
is the command to execute.
One additional note is that Kolibri does have some additional stand-alone installation methods on linux including downloading a .deb file, downloading a .pex file, or installing with pip install. These are not available for the kolibri-server package because it has dependencies on other Debian packages.