> But actually it's more that there should be a standard protocol for package discovery, distribution and updating; and package managers can just be an interfac

> But actually it's more that there should be a standard protocol for package discovery, distribution and updating; and package managers can just be an interface to those. PackageKit exists as a standard protocol on top of myriad package managers. Most major distro package managers (apt, yum/dnf, apk, pacman) have a package kit wrapper, and UI tools such as Gnome Software or KDE Discover exist that use this abstraction. The missing piece here is that it still requires packages to be built in all the different formats that these abstracted package managers require.