# bzippy2 STATUS

**Current focus:** Phase 1 wrapper complete (bzip2 crate backend). Phase 2: native BWT+Huffman impl.

| Piece | Status |
|---|---|
| encoder (wrapper) | ✅ (bzip2 crate backend) |
| decoder (wrapper) | ✅ (bzip2 crate backend) |
| round-trip test | ✅ |
| oracle (7zz round-trip) | ✅ (via 7zippy layer5) |
| streaming | ⬜ |
| decode bench | ⬜ |
| encode bench | ⬜ |
| fuzz | ⬜ |

**Phase 1 backend:** `bzip2 v0.6` (libbzip2-rs pure-Rust port, default backend).
**Phase 2:** Replace with bzippy2's own BWT+Huffman+MTF implementation.

Symbols: ⬜ not started, 🟡 in progress, ✅ done, ❌ blocked.
