A composable build system for OCaml.
C-Rank Grade: S (Elite) - 72/100
External PR Merge Rate: 84%
Response Time: 2d
First Timer Success: 76%
ocaml/dune has a recorded first-timer success rate of 76.2%. Repositories ranked S typically provide actionable feedback during code reviews and actively nurture new community contributors.
Maintainers in ocaml/dune respond to incoming external pull requests in approximately 39.8 hours on average. Keeping PRs focused on single tasks and ensuring tests pass helps maintainers review faster.
The C-Rank™ system evaluates GitHub projects on a 0–100 scale using real data: PR merge rates, review turnaround time, active maintainer presence, and first-time contributor success. A score of 72.1 places ocaml/dune in the S tier.
The external contributor pull request merge rate for ocaml/dune is 83.7%, based on public PR activity from non-core contributors.
ocaml/dune does not currently have active "good first issue" tags indexed, but accepts external contributions through standard GitHub issue tracking.
Strict review standards in ocaml/dune. Ensure PR scope matches issue requirements closely before requesting review.
Average Response Latency
Tracks hours until a maintainer leaves a review, comment, or PR response.
External Acceptance Rate
Percentage of community pull requests successfully merged into main.
First PR Conversion
Rate at which developers submitting their first repository PR succeed.
Show contributors that your repository actively reviews and merges external pull requests.
[](https://getmerged.abhishekco.de/ocaml/dune?utm_source=github&utm_medium=badge)
Historical health & responsiveness evolution
External PR acceptance
First PR success rate
50% receive response in
90% receive response in
Maintainer review activity heatmap & prime window prediction
Calculating local time...
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Detected: UTC
Maintainers are most responsive around 22:00 UTC (22:00 UTC in your timezone). Recommended submission window is Wednesday - Friday from 20:00 to 00:00 UTC (20:00 - 00:00 UTC local).
Maintainer Strategy: Maintainer Sweet Spot: PRs under 150 lines merge in ~26 hours (96% approval). Large PRs (>500 lines) take ~191 hours (38% approval). Keep your diff compact for rapid review.
Desired Behavior Imagine you have an editor extension enabled that can format your dune files (dune, dune-project, etc.) on save, using dune format-dune-file under the hood. I think now if you have a build running in watch mode in the project, this no longer works. The format command conflicts with the build locks. I think this use to work before dune.3.21 but I suspect something changed. Repro? I'd appreciate if someone else can confirm as I am not sure exactly sure from where this workflow comes from (dune.el?). I have noticed it via some other layer with the reformatter emacs package (using this setup). Not sure if this applies to other users. Thanks!
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When evaluating whether to contribute to ocaml/dune, response velocity and maintainer engagement are crucial. GetMerged continuously tracks pull request trajectories, first-comment latency, and code review rounds to help developers avoid submitting pull requests to backlogged repositories.
Currently, maintainers of ocaml/dune acknowledge new external contributions in approximately 1 days+. Out of all submitted pull requests from non-core authors in the last 180-day window, 83.7% were successfully merged into the primary branch.
ocaml/dune has a recorded first-timer success rate of 76.2%. Repositories ranked Elite typically provide actionable feedback during code reviews and actively nurture new community contributors.
The initial maintainer response time averages ~1 days+. Keeping PRs scoped to single concerns and ensuring CI checks succeed will optimize review turnaround.
The C-Rank™ index scores repositories on a 0 to 100 scale using an objective formula: external PR merge rates, initial response speed, active maintainer count, and first-time contributor retention. A score of 72.1 places ocaml/dune in the Elite tier.
The external pull request merge rate is 83.7%. GetMerged isolates non-core community contributions so external developers get an accurate benchmark of PR acceptance probability.
ocaml/dune does not have open beginner labels indexed currently, but external PRs for bugs and documentation improvements are evaluated via normal issue triage.
All metrics displayed for ocaml/dune are automatically retrieved via the public GitHub API and recalculated daily. Insider pull requests submitted by repository owners or organization members are excluded from merge rate calculations to preserve objective external contributor statistics.