I don't care if my package manager is provided by my OS or by some third party--I only want to deal with one package manager. Currently we have these Matryoshka

I don't care if my package manager is provided by my OS or by some third party--I only want to deal with one package manager. Currently we have these Matryoshka dolls where there are package managers inside package managers, and each of them manage their own distinct trees of dependencies.