Decision Workspace
ena vs unifier_set vs polytype
Side-by-side comparison of Rust crates
62
ena
growingv0.14.4
Union-find, congruence closure, and other unification code. Based on code from rustc.
36
unifier_set
growingv0.2.0
A generic unifier set (disjoint set, union-find) datastructure for use in unification algorithms.
57
polytype
growingv7.0.1
A Hindley-Milner polymorphic typing system.
Core Metrics
| ena | unifier_set | polytype | |
|---|---|---|---|
| Health Score | 62 | 36 | 57 |
| Total Downloads | 55.6M | 1.7K | 71.5K |
| 30d Downloads | 3.7M | 3 | 160 |
| Dependents | 1.4K | 0 | 37 |
| Releases | 27 | 1 | 34 |
| Last Updated | 45d ago | 780d ago | 833d ago |
| Age | 9y 5m | 2y 1m | 8y 1m |
Health Breakdown
ena
Maintenance
13
Quality
17
Community
16
Popularity
8
Documentation
8
unifier_set
Maintenance
1
Quality
15
Community
6
Popularity
4
Documentation
10
polytype
Maintenance
6
Quality
21
Community
12
Popularity
6
Documentation
12
Technical Details
| ena | unifier_set | polytype | |
|---|---|---|---|
| Version | 0.14.4 | 0.2.0 | 7.0.1 |
| Stable (≥1.0) | ✗ No | ✗ No | ✓ Yes |
| License | MIT OR Apache-2.0 | AGPL-3.0-or-later | MIT |
| Dependencies | 2 | 2 | 4 |
| Crate Size | 23KB | 6KB | 17KB |
| Features | 2 | 0 | 2 |
| Yanked % | 0.0% | 0.0% | 0.0% |
| Edition | — | 2021 | 2018 |
| MSRV | — | — | — |
| Owners | 4 (team) | 1 | 2 |
Links
Quick Verdict
- •ena leads with a health score of 62/100, but none of the options score above 80.
- •ena is depended on by 1.4K crates — strongest ecosystem trust.
- •⚠ unifier_set, polytype have not been updated in over a year.
- •ena, unifier_set are pre-1.0 — API may change.