Sure, nixos is very forgiving to experiment with because you can easily rollback to a pervious configuration. Modify a library and something stops working fixi

Sure, nixos is very forgiving to experiment with because you can easily rollback to a pervious configuration. Modify a library and something stops working fixing it is as simple as `nix-env --rollback` for a user package and `nixos-rebuild --rollback` if something was changed with the system configuration a restart may be needed if some systems are touched but it has not happened often and when it is needed it is specified. I enjoy how easy it is to set up different profiles with different sets of libraries/compilers for development. It has made it worth while to try out old libraries that only work on old compilers. It also made it easier for me to test against the HEAD of the complier repo for testing forward compatibility or new compiler features. Since everything is nicely encapsulated once I have an environment working on my laptop I can use `nix-copy-closure` to move it to another remote server. `Nixops` a more recent offering just renamed from `charon` also allows for deterministic building of ec2 instances.