+1 for this - I've essentially replaced all of my local tooling for my own projects as well as where I work with nix. Consistent, stable environments that include every dependency have been a breath of fresh air for development across the board. Being able to build lightweight containers from these nix derivations that match the local env perfectly is a huge bonus - you can even stream directly from the nix store into remote docker registries with something like nix2container!

https://github.com/nlewo/nix2container