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Feature Parity Series: Improving Developer Tooling on macOS

Discover the work that went into improving OCaml debugging for macOS including frame pointers, CFI fixes and CI improvements.

18 Jun 2025

Tarides

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Static linking in OCaml

Most of the time, you don’t think about how your file is linked. We’ve come to love dynamically linked files with their small file sizes and reduced memory requirements, but there are times when the convenience of a single binary download from a GitHub release page is really what you need.

17 Jun 2025

Marc Elvers

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Introducing OxCaml

At Jane Street, we’ve been actively making improvements to OCaml for a long time. Over thelast few years, we’ve started to build some fairly ambitious extens...

14 Jun 2025

Jane Street Tech Blog

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Borg Backup

Our PeerTube installation at watch.ocaml.org holds hundreds of videos we wouldn’t want to lose! It’s a VM hosted at Scaleway so the chances of a loss are pretty small, but having a second copy would give us extra reassurance. I’m going to use Borg Backup.

14 Jun 2025

Marc Elvers

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opam-repository for OxCaml

This morning, Anil proposed that having an opam-repository that didn’t have old versions of the packages that require patches to work with OxCaml would be good.

12 Jun 2025

Marc Elvers

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Base images for OxCaml

As @dra27 suggested, I first added support in ocurrent/ocaml-version. I went with the name flambda2, which matched the name in the opam package.

10 Jun 2025

Marc Elvers

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User Isolation on Windows

For a long time, we have struggled to match the performance and functionality of runc on Windows. Antonin wrote the Docker-based isolation for ocurrent/obuilder with PR#127, and I wrote machine-level isolation using QEMU PR#195. Sadly, the most obvious approach of using runhcs doesn’t work, see issue#2156.

09 Jun 2025

Marc Elvers

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