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lean-rs

v0.3.0 Experimental

Safe Rust bindings for Lean 4 interop: runtime initialization, object handles, typed ABI conversions, module loading, exported function calls, semantic handles, and callback handles.

MIT OR Apache-2.0 Edition 2024 MSRV 1.91
API bindingsExternal FFI bindings #bindings#host#embedding#lean#lean4

Quick Verdict

  • โœ“Actively maintained (updated 24d ago)
  • !Pre-1.0: API may have breaking changes
  • โœ“Permissive license (MIT OR Apache-2.0)

Security

Checking security advisories...
Downloads
779
Dependents
51
Releases
26
Size
138KB

Deep Insights

๐Ÿ“‰
Download decline

141 downloads in the last 30 days, down 78% from the previous period. May indicate migration to alternatives.

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Used by top crates

Notable dependents include lean-rs-host, lean-rs-worker-child, lean-rs-worker. When high-quality crates choose lean-rs, it's a strong quality signal.

Health Breakdown

Maintenance 12/25

Recency, release consistency, active ratio

Quality 12/25

Yanked ratio, deps, size, maturity, features

Community 11/20

Reverse deps, ownership, ecosystem

Popularity 3/15

Downloads, momentum, growth trend

Documentation 15/15

Docs, repo, license, metadata

Download Trend

Daily downloads ยท last 90 days
0/day avg
04/275/156/26/207/87/25

Top Dependents

Version Adoption

v0.3.0
33%
v0.1.20
18%
v0.1.19
17%
v0.2.0
17%
v0.1.17
16%

Release Timeline

10 releasessince 2026
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Feature Flags

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README

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Maintainers

Dependencies
11
direct dependencies
Dependents
51
crates depend on lean-rs

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