NixOS is immutable and highly reproducible, with the ability to rebuild identical systems with a declarative configuration file–including installed packages.

So in the case of multiple public computers, you would only need to create/maintain one configuration file that defines all of the user profiles, permissions, restrictions, settings, software packages, you name it.

It would without a doubt be what i’d choose for a fleet of public library computers. Extremely reliable and easy to setup to prevent tampering or misuse.