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CI for opam overlay repositories with day10 and GitHub merge queue

This post describes how to set up a CI for an opam overlay repository using day10 on a self-hosted GitHub Actions runner, with GitHub’s merge queue to gate PRs on build regressions.

02 Apr 2026

Marc Elvers

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Keeping your branch up-to-date

My Arm32 branch will quickly go stale and will need to be rebased and tested. Can GitHub Actions do that for me automatically?

01 Dec 2025

Marc Elvers

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Shipping a robust DB migration runner for Chaufr (OCaml + Caqti + Lwt)

Implemented a production-minded database migration system for Chaufr: CLI, tracking, checksum validation, rollback, and safe SQL execution.

14 Sep 2025

Chukwuma Akunyili

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