Rollbacks are a convenient benefit that you get from using Nix. Nix (and guix) allow for a declarative description of a package, (or, e.g. a collection of pack

Rollbacks are a convenient benefit that you get from using Nix. Nix (and guix) allow for a declarative description of a package, (or, e.g. a collection of packages). In addition to rollbacks, I think some of the other benefits are neat. e.g. Usually for running some project I see on GitHub, I have to copy-paste the "apt install <whatever>" command; or maybe even run a "curl https://example.com/install.sh https://example.com/install.sh | sh". Some projects provide a Docker image, allowing the program to be run without changing what's installed in the system. -- Nix allows for the advantages of each of these (e.g. being able to run the program without installing it into your system, or allowing for a simple command to install it). e.g. VSCode has a Remote Containers plugin which allows for quickly getting started with a project by using a Docker container as an execution environment. Or things like GitHub Code Spaces or ReplIt aim to provide quick-start environments for developing code. -- I think nix-shell offers similar benefits. (Nix can even be used to describe a Docker image format, instead of using a Dockerfile). e.g. something like "install this package, but with this different set of build flags enabled" is relatively straightforward in Nix.