Decision Workspace
xpanda vs subst vs const_env
Side-by-side comparison of Rust crates
37
xpanda
growingv0.1.0
Unix shell-like parameter expansion/variable substitution
51
subst
growingv0.3.8
shell-like variable substitution
54
const_env
growingv0.1.5
Configure const and static items by environment variables.
Core Metrics
| xpanda | subst | const_env | |
|---|---|---|---|
| Health Score | 37 | 51 | 54 |
| Total Downloads | 2.2K | 13.2M | 320.2K |
| 30d Downloads | 18 | 973.3K | 12.1K |
| Dependents | 0 | 121 | 153 |
| Releases | 1 | 17 | 5 |
| Last Updated | 1272d ago | 322d ago | 128d ago |
| Age | 3y 5m | 4y 1m | 6y 5m |
Health Breakdown
xpanda
Maintenance
1
Quality
15
Community
6
Popularity
4
Documentation
11
subst
Maintenance
8
Quality
10
Community
12
Popularity
8
Documentation
13
const_env
Maintenance
9
Quality
16
Community
12
Popularity
7
Documentation
10
Technical Details
| xpanda | subst | const_env | |
|---|---|---|---|
| Version | 0.1.0 | 0.3.8 | 0.1.5 |
| Stable (≥1.0) | ✗ No | ✗ No | ✗ No |
| License | non-standard | BSD-2-Clause OR Apache-2.0 | CC0-1.0 |
| Dependencies | 1 | 9 | 1 |
| Crate Size | 14KB | 25KB | 8KB |
| Features | 0 | 6 | 1 |
| Yanked % | 0.0% | 35.3% | 0.0% |
| Edition | 2021 | 2021 | 2024 |
| MSRV | — | — | — |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •const_env leads with a health score of 54/100, but none of the options score above 80.
- •subst has the most downloads (13.2M), suggesting wider adoption.
- •const_env is depended on by 153 crates — strongest ecosystem trust.
- •⚠ xpanda has not been updated in over a year.