MetaCrate is a test-driven, clean native Rust reimplementation of LibreMetaverse. LibreMetaverse is a behavioral and API reference only: the finished project must not load, host, bind to, invoke, or ship the .NET implementation. The current stage is a compiling structural shell: crate boundaries mirror the .NET library projects, public C# type names have Rust declarations, every upstream NUnit case has a traceable placeholder, and every sample/tool project has a Rust binary target. Callable member signatures and semantic Rust test translations are the next two required gates; the current generated declarations are not yet the complete public API shim.

The source snapshot, compatibility rules, dependency research, and ordered implementation plan are in RUSTREWRITE.md.

The authoritative compiled .NET surface is checked in as api/public-api.json. Every type and member has a reviewed Rust destination in api/RUST-TYPES.tsv and api/RUST-MAPPING.tsv; api/README.md documents deterministic regeneration and validation.

cargo build --workspace
cargo test --workspace --no-run
python3 tools/generate_rust_mapping.py --check

Running cargo test --workspace is intentionally red during the shim stage.