Quarry Toolchain Distributes Immutable Linux Images

Amutable introduced Quarry, a software delivery toolchain that serves update metadata as static blobs from dumb hosting while clients handle verification. Built on systemd-sysupdate and The Update Framework, it separates signing roles to survive key compromise, supports granular per-machine targeting, and lets clients update autonomously with staged rollouts. The design avoids third-party signing keys and reduces mirroring costs.