You could always manage your packages and their dependencies yourself.
Or you could release a new package manager which does provide support for that functionality, build out a team of maintainers, and stay on top of all the releases
It's really not. It's borderline impossible (pun intended) to start your own country, mainly because you need to find a piece of land first. Starting a package manager is, like, a few months of work?
Or you could release a new package manager which does provide support for that functionality, build out a team of maintainers, and stay on top of all the releases