Decision Workspace
leo3-ffi vs lean-rs-sys vs lean-rs
Side-by-side comparison of Rust crates
55
leo3-ffi
experimentalv0.2.2
Raw FFI bindings to the Lean4 C API
62
lean-rs-sys
experimentalv0.1.10
Raw FFI bindings for the Lean 4 C ABI. See `lean-rs` for the safe front door.
57
lean-rs
experimentalv0.1.10
Safe Rust bindings for Lean 4 interop: runtime initialization, object handles, typed ABI conversions, module loading, exported function calls, semantic handles, and callback handles.
Core Metrics
| leo3-ffi | lean-rs-sys | lean-rs | |
|---|---|---|---|
| Health Score | 55 | 62 | 57 |
| Total Downloads | 360 | 298 | 222 |
| 30d Downloads | 0 | 0 | 0 |
| Dependents | 9 | 39 | 19 |
| Releases | 10 | 10 | 10 |
| Last Updated | 38d ago | today | today |
| Age | 5m | 7d | 7d |
Health Breakdown
leo3-ffi
Maintenance
17
Quality
14
Community
9
Popularity
3
Documentation
12
lean-rs-sys
Maintenance
17
Quality
17
Community
10
Popularity
3
Documentation
15
lean-rs
Maintenance
17
Quality
12
Community
10
Popularity
3
Documentation
15
Technical Details
| leo3-ffi | lean-rs-sys | lean-rs | |
|---|---|---|---|
| Version | 0.2.2 | 0.1.10 | 0.1.10 |
| Stable (≥1.0) | ✗ No | ✗ No | ✗ No |
| License | MIT OR Apache-2.0 | MIT OR Apache-2.0 | MIT OR Apache-2.0 |
| Dependencies | 3 | 1 | 10 |
| Crate Size | 50KB | 40KB | 128KB |
| Features | 0 | 5 | 1 |
| Yanked % | 0.0% | 0.0% | 0.0% |
| Edition | 2021 | 2024 | 2024 |
| MSRV | 1.88 | 1.91 | 1.91 |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •lean-rs-sys leads with a health score of 62/100, but none of the options score above 80.
- •leo3-ffi has the most downloads (360), suggesting wider adoption.