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as of 20-october 2025 (Effects + Performance benchmarked!)
✅ What We Have Built
Core Runtime:
- ✅ noun.ml - Noun type system (atom/cell)
- ✅ nock.ml - Full Nock interpreter (all 12 opcodes)
- ✅ bitstream.ml - Bit-level I/O (optimized for large atoms)
- ✅ serial.ml - Jam/cue serialization (iterative, handles 3M+ nouns)
- ✅ state.ml - State management (event counter, kernel storage, snapshots, eventlog)
- ✅ boot.ml - Pill loading (ivory + solid with lifecycle formula!)
- ✅ eventlog_lmdb.ml - LMDB-based event persistence matching Vere
Working Features:
- ✅ Ivory pill boot via lifecycle formula (loads Arvo kernel)
- ✅ Solid pill boot via lifecycle formula (CORRECT approach matching Vere!)
- ✅ Lifecycle formula [2 [0 3] [0 2]] - batch processes all boot events
- ✅ Mixed event list structure (bot bare, mod/use timestamped) matching Vere
- ✅ Event application via poke (for runtime events after boot)
- ✅ Snapshot/restore capability
- ✅ Fast cue (~1.5s for 3.2M nouns)
- ✅ LMDB event persistence - Write events to disk matching Vere exactly
- ✅ Event replay - Load from disk on restart
- ✅ Pier directory structure - Create .urb/log/ with LMDB files
- ✅ Event timestamping - Events wrapped as [timestamp event_data]
- ✅ Proper eventlog close/sync
Boot Process (Matching Vere Exactly!):
- ✅ Parse solid pill: [%pill %solid bot mod use]
- ✅ Add 4 system events to mod (wack, whom, verb, wyrd)
- ✅ Add boot event to use
- ✅ Build mixed event list: bot (bare) + mod/use (timestamped)
- ✅ Run lifecycle formula on full list: [2 [0 3] [0 2]]
- ✅ Extract kernel from slot 7 of result
- ✅ Boot complete with working Arvo kernel!
LMDB Event Log Implementation (Matches Vere!):
- ✅ Two databases: "EVENTS" (uint64 → bytes) and "META" (string → bytes)
- ✅ 1TB map size (0x10000000000, matches Vere's default)
- ✅ Event format: 4-byte murmur3 mug + jammed noun (matches Vere exactly)
- ✅ Tested with 10 events (13MB total LMDB database)
- ✅ Handles massive events: 8.6MB (3.2M+ nodes), 4.1MB events work perfectly
- ✅ Uses MDB_INTEGERKEY for efficient uint64 event number indexing
- ✅ Proper transaction handling for atomicity
Event Timestamping:
- Events wrapped as [timestamp event_data] like Vere
- Urbit time: 128-bit atom (seconds + fractional seconds)
- Each event increments by 2^48 (~15.26 microseconds, 1/2^16 seconds)
- Matches Vere's time format exactly (verified with python script) <- huh? what's python to do with anything
🚀 What's Needed to Boot a Real Ship
Phase 1: Effects & I/O (CRITICAL - Need this first!)
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The runtime is solid. We can boot pills, run Nock, persist events.
What's missing: Arvo returns EFFECTS that need to be executed!
1. ❌ Effects Processing - Parse and dispatch effects from poke results
- Effects are returned as the head of [effects new-kernel]
- Need to route to appropriate I/O drivers (Dill, Ames, Eyre, etc.)
- This is THE critical missing piece!
2. ❌ Terminal I/O (Dill driver) - FIRST I/O DRIVER TO IMPLEMENT
- Handle %blit effects (print to terminal)
- Handle %belt events (keyboard input from terminal)
- Parse and render ANSI/styled text
- This will let us SEE the ship boot and INTERACT with it!
3. ❌ Event Loop - Main loop to process events and effects
- Read input (keyboard, network, HTTP)
- Send to Arvo via poke
- Process returned effects
- Route effects to I/O drivers
- Persist events to LMDB
Phase 2: Full Connectivity
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4. ❌ HTTP I/O (Eyre driver) - Web interface
- Handle HTTP requests
- Serve web interface (Landscape)
- WebSocket connections for live updates
5. ❌ Networking (Ames driver) - Ship-to-ship communication
- UDP networking for peer-to-peer
- Packet routing and encryption
- NAT traversal
Phase 3: Production Features
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6. ❌ Metadata persistence - Save ship identity in LMDB META database
7. ❌ Event replay on startup - Boot from existing pier
8. ❌ Jets - Performance optimizations for hot paths
9. ❌ Snapshot system - Periodic kernel snapshots to speed up replay
10. ❌ Crash recovery - Handle corrupted state gracefully
🎯 IMMEDIATE NEXT STEPS TO BOOT:
════════════════════════════════════════════════════
1. Parse effects from poke results
2. Implement basic Dill driver (%blit for output, %belt for input)
3. Create event loop that:
- Boots solid pill (DONE - we can do this!)
- Processes terminal input as %belt events
- Sends to Arvo via poke
- Displays %blit effects to terminal
4. Test: Can we type commands and see responses?
Once Dill works, we have an INTERACTIVE URBIT SHIP! 🎉
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