delta-io/delta-rs
What happens to a stranger's pull request here, in the Porchlamp snapshot of 14 October 2026.
Outside pull requests to delta-rs got a first human reply in a median of 12.9 hours (106 pull requests, 11 April to 8 October 2026); 22% got none within 14 days. It ranks 80 of 3,833 overall and 68 of 1,968 for first-time contributors.
Rating
- Score: 70.53
- Coverage: 84% · Ceiling A
- Tier: A (capped)
- Quadrant: Sweet Spot
- Ecosystem: crates.io (Rust)
Capped: this tier can go no higher until more of the project's inputs are measured. It reflects how much data there is, not how good the score is.
Five pillars
| Pillar | Score | Coverage |
|---|---|---|
| Responsiveness | 82.0 | 100% |
| Criticality | 57.3 | 35% |
| Governance | 82.0 | 100% |
| Rigor | 50.5 | 100% |
| Accessibility | 78.3 | 100% |
Rank in each lens
| Lens | Standing |
|---|---|
| Balanced | Rank 80 of 3,833 |
| First-timer | Rank 68 of 1,968 |
| Career capital | Not ranked: This repository's production-criticality signal is not yet high enough for career-capital ranking. |
| Senior systems | Rank 134 of 1,206 |
| AI-assisted | Rank 269 of 3,929 |
The measured parameters
| Parameter | Value | Count | Window | What it measures |
|---|---|---|---|---|
| Time to First Response | 12.9132 | 106 | 11 April to 8 October 2026 | Median hours from an outside pull request opening to its first substantive human reply. |
| Decision Rate (90d) | 0.8478 | 46 | 11 April to 10 July 2026 | Share of outside pull requests that were merged or closed within 90 days. |
| First-timer Merge Rate | 0.6596 | 47 | — | Share of first-time outside authors' decided pull requests that were merged. |
| PR Ghost Rate (14d) | 0.2165 | 97 | 16 April to 13 October 2026 | Share of outside pull requests with no maintainer response, merge or close within 14 days. |
| Time to Merge (p90) | 411.0289 | 73 | 11 April to 8 October 2026 | Hours within which 90% of merged outside pull requests were merged. |
| Dependents | Not shown: Third-party data unavailable | — | — | Packages in the registry that depend on this project, counted once each. |
| OpenSSF Criticality | 0.5732 | — | — | OpenSSF criticality score from 0 to 1, computed from the project's public activity signals. |
| Monthly Downloads | Not shown: Third-party data unavailable | — | — | Downloads from the package registry in a month. |
| Legal IP Regime | DCO | — | — | The contributor licence regime: DCO, none, a foundation CLA or a corporate CLA. |
| Elephant Factor | 4 | 853 | — | The fewest organisations that account for half of the last year's commits. |
| Promotion Ladder | AD_HOC | — | — | How openly a contributor can become a maintainer, from closed to verified. |
| Pipeline Defenses | 77.5 | — | — | How well the project's build and review pipeline defends against bad changes, 0 to 100. |
| AI Policy Posture | AD_HOC | — | — | Whether the project has a written policy on AI-assisted contributions. |
| Substantive Review Rate | 0.1989 | 181 | 11 April to 8 October 2026 | Share of decided pull requests that received a substantive review. |
| Newcomer Issue Supply | 7 | — | — | Open, unassigned, up-to-date issues marked for newcomers. |
| Newcomer Conversion | 0.6667 | 12 | — | Share of first-time authors whose first pull request merged within 180 days. |
| Newcomer Return Rate | 0.375 | 8 | — | Share of those merged first-time authors who sent a second pull request within 90 days. |
| Developer Experience | 50 | 9 | — | Developer experience, 0 to 100: half CI run time, half setup signals. |
Similar projects
The ranked projects nearest this one in the same ecosystem.
- rust-lang/rust-analyzer (rank 75)
- nushell/nushell (rank 83)
- zed-industries/zed (rank 85)
- hickory-dns/hickory-dns (rank 86)
- apache/opendal (rank 87)
Evidence
- Snapshot 2026-10-14, data as of 13 October 2026.
- Record hash:
59a66a88a9de9dbf42a474660c3cad4f1a6ae602e7569a51788a6937f9188672 - The full record is in data/2026-10-14/repos/19.json, under the key
delta-io/delta-rs. - How every number is measured: Porchlamp methodology.
Is something wrong?
Open an issue about this record and say what looks wrong.