[semiquaver]

Ok? Not sure what a package manager can do about the fact that eventually you want to run the things you install.

[frabcus]

Have any kind of provenance. eg like Debian has for 30 years. Key signing in person etc

[tpetry]

That has also been implemented recently. With staged publishing the author must verify a new release with 2FA so automated attacks dont work anymore. Some human in the loop must verify a release.