However, this is not the case for the package managers that deal with programming libraries.

It is used when viewing packages with the package manager.

After approval, only the package manager can obtain quality assurance listings.

If you are the package manager you can do one of the following:

The package manager also enables updates to address security issues.

The system is intended to be used alongside a distribution's native package manager.

The package manager may no longer be able to do so automatically.

If they switched to the debian package manager, that would be awesome.

Will it be possible to add outside repositories to that package manager?

A package manager was added for building and downloading lzm.