
Software Engineering Daily Flox, Nix, and Reproducible Software Systems with Michael Stahnke
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Jan 8, 2026 Michael Stahnke, VP of Engineering at Flox and seasoned release engineer, shares insights on modern software challenges. He discusses how Nix offers a powerful yet complex solution for reproducible software builds. Stahnke explains Flox's focus on secure supply chains and developer-friendly workflows, tackling cross-platform dependencies with ease. Additionally, he touches on the impact of deterministic environments on software reliability and AI's role in amplifying engineering practices. The conversation highlights innovations designed to streamline software development and enhance security.
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Packaging Career From Caterpillar To Phlox
- Michael Stahnke traced his packaging passion from Caterpillar to Puppet and CircleCI.
- He built the Apple package repo and then joined Phlox to commercialize reproducible packaging at scale.
Opinionated Reproducibility On Nix
- Phlox builds opinionated units on top of Nix to make reproducible environments accessible to enterprises.
- They aim for 'secure by construction' developer workflows and cross-platform reproducibility.
Nix Store Enables Side‑By‑Side Versions
- Nix uses a central immutable Nix store to keep side-by-side versions and avoid polluting the system.
- You load precise closures into a shell and exit to remove them, preserving the host environment.

