Newer languages have made packaging and importing dependencys significantly easier, but have done this while increasing coupling and making switching dependencys harder. This results in brittle dependency trees.

Using a private package manager, intermixing private and public, and substituting arbitrary dependencys with compatible alternatives, i.e. modularity, should be easy. Only then does solving the problem become easy.

What we used to have is a big ball of mud. Modern languages made it easier to decompose a system into components. But what we really want is easily decomposing a system into modular components which is yet unsolved.