You’re probably familiar with containers and OCI images, and you’ve probably heard of Nix—usually from that somebody who really, really likes it. This talk explains how containerd assembles containers from OCI images, then contrasts that with how Nix builds reproducible artifacts that can be composed into a complete execution environment. With that foundation, we’ll walk through a few practical ways to use Nix-built components as container filesystems in Kubernetes—ranging from assembling a rootfs from a closure to generating OCI images to running Nix-based environments directly in containers. The goal is to give attendees a clear mental model of both systems and the spectrum of techniques that connect them.
