ninja-build/ninja
What happens to a stranger's pull request here, in the Porchlamp snapshot of 17 October 2026.
Outside pull requests to ninja-build/ninja got a first human reply in a median of 4.3 days (13 pull requests, 18 April to 15 October 2026); 60% got none within 14 days. It ranks 2,150 of 3,219 overall. For first-time contributors it ranks 1,333 of 1,525 (the bottom 13%).
| Rank | 2,150 of 3,219 |
|---|---|
| Score | 45.79 |
| Tier | C |
| Median first reply | 4.3 days (103.6 hours) |
| 14-day no-reply share | 60% |
| First-timer rank | 1,333 of 1,525 |
| Ecosystem | C and C++ |
| Window | 18 April to 15 October 2026 |
Composite
- Rank
- 2,150 of 3,219
- Score
- 45.79
- Tier
- C
- Coverage
- 100% · Full
- Quadrant
- Graveyard
Coordinates: leverage 48.2 (coverage 100%), friction 56.4 (coverage 100%)
Five pillars
| Pillar | Score | Coverage |
|---|---|---|
| Responsiveness | 37.3 | 100% |
| Criticality | 47.5 | 100% |
| Governance | 50.5 | 100% |
| Rigor | 47.8 | 100% |
| Accessibility | 49.0 | 100% |
The measured parameters
Responsiveness
| Parameter | Value | Score | Count | Window | Source |
|---|---|---|---|---|---|
| Decision Rate (90d)Share of outside pull requests that were merged or closed within 90 days. | 33.3% | 41.7 | 18 | 18 April to 17 July 2026 | primaryraw/pr_window/ninja-build__ninja.json |
| PR Ghost Rate (14d)Share of outside pull requests with no maintainer response, merge or close within 14 days. | 60.0% | 0.0 | 45 | 20 April to 17 October 2026 | primaryraw/pr_window/ninja-build__ninja.json |
| First-timer Merge RateShare of first-time outside authors' decided pull requests that were merged. | 92.9% | 100.0 | 14 | — | primaryraw/author_history/ninja-build__ninja.json |
| Time to First ResponseMedian hours from an outside pull request opening to its first substantive human reply. | 103.6 hours (4.3 days) | 22.2 | 13 | 18 April to 15 October 2026 | primaryraw/pr_window/ninja-build__ninja.json |
| Time to Merge (p90)Hours within which 90% of merged outside pull requests were merged. | 2226.7 hours (92.8 days) | 1.7 | 22 | 18 April to 15 October 2026 | primaryraw/pr_window/ninja-build__ninja.json |
Criticality
| Parameter | Value | Score | Count | Window | Source |
|---|---|---|---|---|---|
| DependentsPackages in the registry that depend on this project, counted once each. | Not shown: Not applicable | ||||
| Monthly DownloadsDownloads from the package registry in a month. | Not shown: Not applicable | ||||
| OpenSSF CriticalityOpenSSF criticality score from 0 to 1, computed from the project's public activity signals. | 0.4747 | 47.5 | — | — | proxy:no_dependents_signalraw/github_meta/ninja-build__ninja.json |
Governance
| Parameter | Value | Score | Count | Window | Source |
|---|---|---|---|---|---|
| Elephant FactorThe fewest organisations that account for half of the last year's commits. | 1 | 25.0 | 159 | — | primaryraw/commits_365d/ninja-build__ninja.json |
| Legal IP RegimeThe contributor licence regime: DCO, none, a foundation CLA or a corporate CLA. | No CLA or sign-off found | 85.0 | — | — | primaryraw/governance/ninja-build__ninja.json |
| Promotion LadderHow openly a contributor can become a maintainer, from closed to verified. | No written path to becoming a maintainer | 40.0 | — | — | primaryraw/governance/ninja-build__ninja.json |
Rigor
| Parameter | Value | Score | Count | Window | Source |
|---|---|---|---|---|---|
| AI Policy PostureWhether the project has a written policy on AI-assisted contributions. | No written AI policy | 40.0 | — | — | primaryraw/governance/ninja-build__ninja.json |
| Pipeline DefensesHow well the project's build and review pipeline defends against bad changes, 0 to 100. | 70 | 70.0 | — | — | primaryraw/scorecard/ninja-build__ninja.json |
| Substantive Review RateShare of decided pull requests that received a substantive review. | 20.7% | 25.9 | 29 | 18 April to 15 October 2026 | primaryraw/pr_window/ninja-build__ninja.json |
Accessibility
| Parameter | Value | Score | Count | Window | Source |
|---|---|---|---|---|---|
| Developer ExperienceDeveloper experience, 0 to 100: half CI run time, half setup signals. | 70 | 70.0 | 18 | — | primaryraw/actions_runs/ninja-build__ninja.json |
| Newcomer ConversionShare of first-time authors whose first pull request merged within 180 days. | 61.5% | 100.0 | 13 | — | primaryraw/author_history/ninja-build__ninja.json |
| Newcomer Issue SupplyOpen, unassigned, up-to-date issues marked for newcomers. | 1 | 10.0 | — | — | primaryraw/gfi/ninja-build__ninja.json |
| Newcomer Return RateShare of those merged first-time authors who sent a second pull request within 90 days. | 0.0% | 0.0 | 8 | — | primaryraw/author_history/ninja-build__ninja.json |
Persona view
| Persona | Rank | Score | Tier | Status |
|---|---|---|---|---|
| Balanced | 2,150 of 3,219 | 45.79 | C | Rated |
| First-timer | 1,333 of 1,525 | 44.84 | C | Rated |
| Career capital | This repository's production-criticality signal is not yet high enough for career-capital ranking. | |||
| Senior systems | Fewer than 3 organizations account for most commits (not multi-vendor). | |||
| AI-assisted | 2,416 of 3,696 | 46.14 | C | Rated |
Integrity
- Snapshot
- 2026-10-17
- Raw hash
- e22c3a1c9ccc46f24dc0826abaa0a66b56d16747546c4308453e08177d98fd77
No suspicion flags on this repository.
The full record is in data/2026-10-17/repos/6f.json, under the key ninja-build/ninja.
How every number is measured: Porchlamp methodology.
Open an issue about this record and say what looks wrong.
Porchlamp (2026). ninja-build/ninja. Snapshot 2026-10-17. https://porchlamp.org/projects/ninja-build/ninja/. CC BY 4.0.
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