Nix doesn't have anything to do with that problem. If anything it helps as it lets multiple even conflicting versions of libraries and software coexist and run

Nix doesn't have anything to do with that problem. If anything it helps as it lets multiple even conflicting versions of libraries and software coexist and run together. What you want is flatpak or appimage (or even snap). These are self contained distributed binaries that contain and isolate all their dependencies. It is simply a one file download for any linux distro. They work great--I use a ton of flatpak apps like VS Code all the time.