Two floor profiles
Bounded journals, clamped builds, automatic GC, and minimal units scaled to the RAM class.
The problem
Tiny VMs OOM during rebuilds, burn RAM on defaults, and go unreachable on naive deploys behind NAT.
Operators running NixOS on sub-1GB cloud instances who need conservative defaults and headless recovery.
Why it matters
A focused part of the Corbet Nix suite
Four lifelines
Watchdog, SSH lifeline, serial flight recorder, and external heartbeat toggle separately.
Honest deprecation
Older delivery implementations are marked as ownership overlaps rather than described as moved.
Evidence and limits
Inspect the claim, then the mechanism.
Bound to a revision-addressed public source; checks are declared in-tree and CNIX has not reproduced their results.
Project cosmos