Sphinx on ubuntu 19.04

I’ve successfully intalled sphinx on the “disco dingo” 19.04 (“dingo” means “crazy about” in french that must explain why I decided to install a non LTE rev)
for insalling it just need to use the “bionic” ppa
the installation procedure just need to change :
echo "deb http://plf.parrot.com/sphinx/binary `lsb_release -cs`/" | sudo tee /etc/apt/sources.list.d/sphinx.list > /dev/null
by
echo "deb http://plf.parrot.com/sphinx/binary bionic/" | sudo tee /etc/apt/sources.list.d/sphinx.list > /dev/null
hope it will helps anyone