My first Nix Aha!: A Newcomer’s Perspective (nixcon2025)

When I first saw a colleague of mine typing "nix-shell", I had no idea what it did — but running it felt like magic. A swirl of "/nix/store/..." messages later, a fully working dev environment, with all the right tools and no system mess! Like Alice, I was “curiouser and curiouser.” In this talk, I’ll share the key “aha!” moments from my first few weeks with Nix — how I came to understand derivations, the Nix store, and pure builds. I’ll walk through the “from confusion to clarity” moments that helped me go from feeling lost in a sea of unfamiliar terminology to confidently writing my first Nix expressions. Along the way, I’ll highlight the resources, metaphors, and mental models that made the biggest difference — and the ones that didn’t. The Nix community is filled with passionate and experienced users, but for newcomers, the learning curve can feel overwhelming. This talk is not a tutorial, but a reflection: a newcomer’s perspective on what it’s like to learn Nix today, what helped me “get it,” and where the community can do more to support others on the same journey. about this event: https://talks.nixcon.org/nixcon-2025/talk/FMTH39/