ALT Despite advances in development tooling, maintaining consistent local development environments remains a challenge for many teams. Onboarding new engineers often entails running commands or custom scripts that can fail unpredictably across different machines and result in inconsistencies. To solve this challenge, our teams have increasingly relied on Devbox. Devbox is a command-line tool that provides an approachable interface for creating reproducible, per-project local development environments, leveraging the Nix package manager without using virtual machines or containers. It has notably streamlined their onboarding workflow because once it has been configured for a codebase, it takes one CLI command (devbox shell) to reproduce the defined environment on a new device. Devbox supports shell hooks, custom scripts and devcontainer.json generation for integration with VSCode.