Nix is used to build the largest collection of software packages on a planet, including geospatial software maintained by Nix Geospatial Team. It is multi platform, runs on any Linux and even on a Mac. In addition, Nix provides full control of a dependency graph, can build reproducible, per-project isolated environments, container images, run services and provide many other features not found anywhere else. I will demonstrate some very unique features of Nix, which can make a developer's or a user's life so much nicer and will present the arguments why we should seriously consider using this technology for a FOSS4G software. This talk is follow up on my previous FOSS4G talk about features and potential benefits of using Nix technology stack for geospatial use cases.