Farid Zakaria personal blog

Nix wrote half of my debugger

A few days ago I wrote about Rewind VM, a deterministic VM where every run of a Nix build is a pure function of its inputs, thread schedule included! I have been using it to find, reproduce and solve numerous race conditions in Nix builds, but it’s been making me feel a little crazy. What is this superpower, and why…
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Software EngineeringTools & Productivity2026

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Oct 9, 2026Nix wrote half of my debugger by ingve24176

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