Decision Workspace
kobold-data-shim vs copybook-core vs copybook-arrow
Side-by-side comparison of Rust crates
52
kobold-data-shim
experimentalv0.7.2
A verifiable COBOL record-decoding shim for data-migration pipelines: ingest a copybook + a raw record dump and decode it byte-exactly via the oracle-proven gnucobol-rs courts (PIC, layout, COPY, decimal MOVE).
47
copybook-core
experimentalv0.4.3
Core COBOL copybook parser, schema, and validation primitives.
46
copybook-arrow
experimentalv0.4.3
COBOL schema conversion to Apache Arrow and Parquet formats.
Core Metrics
| kobold-data-shim | copybook-core | copybook-arrow | |
|---|---|---|---|
| Health Score | 52 | 47 | 46 |
| Total Downloads | 292 | 423 | 62 |
| 30d Downloads | 0 | 0 | 0 |
| Dependents | 1 | 9 | 1 |
| Releases | 17 | 1 | 1 |
| Last Updated | 34d ago | 105d ago | 105d ago |
| Age | 1m | 3m | 3m |
Health Breakdown
kobold-data-shim
Maintenance
17
Quality
13
Community
7
Popularity
3
Documentation
12
copybook-core
Maintenance
8
Quality
12
Community
9
Popularity
3
Documentation
15
copybook-arrow
Maintenance
8
Quality
14
Community
7
Popularity
2
Documentation
15
Technical Details
| kobold-data-shim | copybook-core | copybook-arrow | |
|---|---|---|---|
| Version | 0.7.2 | 0.4.3 | 0.4.3 |
| Stable (≥1.0) | ✗ No | ✗ No | ✗ No |
| License | Apache-2.0 | AGPL-3.0-or-later | AGPL-3.0-or-later |
| Dependencies | 3 | 22 | 8 |
| Crate Size | 3.2MB | 112KB | 44KB |
| Features | 3 | 3 | 3 |
| Yanked % | 0.0% | 0.0% | 0.0% |
| Edition | 2021 | 2024 | 2024 |
| MSRV | 1.74 | 1.92 | 1.92 |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •kobold-data-shim leads with a health score of 52/100, but none of the options score above 80.
- •copybook-core has the most downloads (423), suggesting wider adoption.