Except for minor differences, this guide applies to both Debian and Ubuntu.
It has been tested with Debian 8 (Jessie), Debian 9 (Stretch) and Ubuntu 16.04 (Xenial).

Except for minor differences, this guide applies to both Debian and Ubuntu.
It has been tested with Debian 8 (Jessie), Debian 9 (Stretch) and Ubuntu 16.04 (Xenial).

.. warning::
    Ubuntu 20+ (*Focal*) is currently not supported as it lacks a Python 2 uWSGI plugin.
    Please use an older Ubuntu version for now; modern Ubuntu versions will be supported again
    in Indico 3.0.

    If you are an advanced user and need to use Ubuntu 20, you can also ``pip install uwsgi``
    in the Indico virtualenv and manually create a systemd unit file to start it on boot.
    This is not covered by the documentation though, but should work in principle (we did
    not test it).

Add warning about Ubuntu 20 being unsupported
Add warning about Ubuntu 20 being unsupported
