Completely missed that Nix solves RPM dependency hell, which is a superset of the shared library hell.

Another problem not solved by NixOS and most other distros is conflating and mixing dependencies in a messy, fragile way rather than having a clear separation between the OS and add-ons that FreeBSD and others have. Congruent with this is proper configuration and lifecycle management.

I'm also wondering about the security of this RPATH approach, if it does or doesn't introduce vulnerabilities.