Kepr

Offer your faces. Let others steal what they need. Kepr is a rolling snapshot library for Koh repositories — part private backup, part public commons.

Two instances, one binary

Private instance. Runs on a machine you own. Every koh offer pushes a fresh snapshot automatically. If a disk dies or a machine goes missing, koh steal pulls it all back. The rolling window keeps the last N saves per lane, pruning only what nothing else references.

Public instance. A read-only portal for sharing open source work. You offer explicitly when something is worth sharing. Anyone can browse, steal, and download bundles. kepr.uk is a live example.

Core concepts

• Faces — a Koh project tracked by Kepr. Each face has its own save history and rolling window.
• Offers — a two-phase push from Koh to Kepr. Only objects Kepr doesn’t already have are sent.
• Steals — pulling any snapshot down to a local Koh repository. The full repository, objects and all.

No mystery, no magic

Every file is a zlib-compressed blob keyed by its Blake3 hash. Deduplication is automatic and exact — unchanged files between saves are stored once. The SQLite database is only a cache; if it’s lost, kepr recover rebuilds it entirely from the manifests on disk. Nothing disappears unless its manifest is gone.