Hello, if you use a software like the PPAs appear as "Stable Releases" or "Daily Builds", which is a bit confusing and can possible "conflict" with other PPAs so that the User sees several "Stable Releases" or similar.
A simple renaming to "Minetest Stable Builds" and "Minetest Daily Builds" would make it easier for the user to find the PPA or get an idea what the PPA does without further investigation.
I know it is a bit redundant for the ppa maintainers, but it would make it easier for the end users. :)