YosysHQ/yosys
What happens to a stranger's pull request here, in the Porchlamp snapshot of 17 October 2026.
Outside pull requests to YosysHQ/yosys got a first human reply in a median of 21.5 hours (161 pull requests, 19 April to 16 October 2026); 9% got none within 14 days. It ranks 908 of 3,219 overall. It is not ranked for first-time contributors: not enough evidence to show under this lens.
| Rank | 908 of 3,219 |
|---|---|
| Score | 56.04 |
| Tier | B |
| Median first reply | 21.5 hours |
| 14-day no-reply share | 9% |
| First-timer rank | Not enough evidence to show under this lens. |
| Ecosystem | C and C++ |
| Window | 19 April to 16 October 2026 |
Composite
- Rank
- 908 of 3,219
- Score
- 56.04
- Tier
- B
- Coverage
- 88% · Ceiling A
- Quadrant
- Sweet Spot
Coordinates: leverage 53.4 (coverage 100%), friction 37.5 (coverage 80%)
Five pillars
| Pillar | Score | Coverage |
|---|---|---|
| Responsiveness | 81.0 | 80% |
| Criticality | 53.4 | 100% |
| Governance | 59.3 | 100% |
| Rigor | 49.5 | 100% |
| Accessibility | 21.0 | 50% |
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. | 87.7% | 100.0 | 65 | 19 April to 18 July 2026 | primaryraw/pr_window/YosysHQ__yosys.json |
| PR Ghost Rate (14d)Share of outside pull requests with no maintainer response, merge or close within 14 days. | 9.3% | 81.4 | 140 | 20 April to 17 October 2026 | primaryraw/pr_window/YosysHQ__yosys.json |
| First-timer Merge RateShare of first-time outside authors' decided pull requests that were merged. | Not shown: Collector failure | ||||
| Time to First ResponseMedian hours from an outside pull request opening to its first substantive human reply. | 21.5 hours (0.9 days) | 78.9 | 161 | 19 April to 16 October 2026 | primaryraw/pr_window/YosysHQ__yosys.json |
| Time to Merge (p90)Hours within which 90% of merged outside pull requests were merged. | 503.5 hours (21 days) | 39.3 | 114 | 19 April to 16 October 2026 | primaryraw/pr_window/YosysHQ__yosys.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. | 0.5342 | 53.4 | — | — | proxy:no_dependents_signalraw/github_meta/YosysHQ__yosys.json |
Governance
| Parameter | Value | Score | Count | Window | Source |
|---|---|---|---|---|---|
| Elephant FactorThe fewest organisations that account for half of the last year's commits. | 2 | 50.0 | 980 | — | primaryraw/commits_365d/YosysHQ__yosys.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/YosysHQ__yosys.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/YosysHQ__yosys.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/YosysHQ__yosys.json |
| Pipeline DefensesHow well the project's build and review pipeline defends against bad changes, 0 to 100. | 65 | 65.0 | — | — | primaryraw/scorecard/YosysHQ__yosys.json |
| Substantive Review RateShare of decided pull requests that received a substantive review. | 30.7% | 38.4 | 166 | 19 April to 16 October 2026 | primaryraw/pr_window/YosysHQ__yosys.json |
Accessibility
| Parameter | Value | Score | Count | Window | Source |
|---|---|---|---|---|---|
| Developer ExperienceDeveloper experience, 0 to 100: half CI run time, half setup signals. | 70 | 70.0 | 11 | — | primaryraw/actions_runs/YosysHQ__yosys.json |
| Newcomer ConversionShare of first-time authors whose first pull request merged within 180 days. | Not shown: Collector failure | ||||
| Newcomer Issue SupplyOpen, unassigned, up-to-date issues marked for newcomers. | 0 | 0.0 | — | — | primaryraw/gfi/YosysHQ__yosys.json |
| Newcomer Return RateShare of those merged first-time authors who sent a second pull request within 90 days. | Not shown: Collector failure | ||||
Persona view
| Persona | Rank | Score | Tier | Status |
|---|---|---|---|---|
| Balanced | 908 of 3,219 | 56.04 | B | Rated |
| First-timer | Not enough evidence to show under this lens. | |||
| 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 | 1,158 of 3,696 | 55.21 | B | Rated |
Integrity
- Snapshot
- 2026-10-17
- Raw hash
- 9f9b5370ee6d7268dd11d587caf35dcf7de12f18e062fe99dcc8f962b8971988
No suspicion flags on this repository.
The full record is in data/2026-10-17/repos/56.json, under the key YosysHQ/yosys.
How every number is measured: Porchlamp methodology.
Open an issue about this record and say what looks wrong.
Porchlamp (2026). YosysHQ/yosys. Snapshot 2026-10-17. https://porchlamp.org/projects/yosyshq/yosys/. CC BY 4.0.
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