A five-machine NixOS fleet from one flake
Run 5 NixOS machines (2 desktops, a home server, a public VPS, and a recovery/install ISO) from one Git-tracked flake, with every host reproducible from the repo and no hand-run setup steps. The home server's root filesystem is wiped on every boot, so only explicitly declared state survives.
The full write-up comes out of the interview: why, how, what broke, what it taught me, with pictures and links to the config.
