Yuck. The only way out of dependency hell is to disallow it by allowing multiple versions/different configurations of side-by-side packages and GCing non-leaf packages. This pattern of "only one global package for everything" is failure. Too often, naïve designers will just cut things because they just don't understand them or copy & paste because they don't understand what failures exist and what solutions do/alternatives could exist.

Habitat (hab), nix, and others IIRC do SxS package mgmt.

Everything Should Be Made as Simple as Possible, But Not Simpler - possibly paraphrasing Einstein