Nix

Nix wrote half of my debugger

Farid Zakaria explains how Rewind VM, his deterministic VM for Nix builds, grew a full debugger with source panels, gdb on any step, run comparison, CPU thread lanes and race-finding, and argues the hard parts (exact inputs, debug symbols, sources) were already provided by Nix's hermetic derivations.

Blog post · Nix · Debugging · Developer Tools