Nix wrote half of my debugger

Automated excerpt

Rewind’s VM has one CPU, so its first run passes too. rewind check runs the failing: run c2f1cfac0c288f3e, schedule 1 over steps 3237.. 3238 3237 139/140 deposit (bank. c:24), on the CPU at the deciding step 3250 139/141 deposit (bank. c:24), at the first event that differs Running this check on my laptop took 11 seconds. Rewind makes it very easy to compare two runs. With --run, it starts from a run you already have instead, at any step you pick_.

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