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day10 builds Windows packages again and agrees with GitHub Actions on all but a handful of explainable cells; OCaml 5 has been killed by Ctrl-Break since 2022; opam 2.6 reached every CI; a page cache saved 0.64 seconds; and one CephFS metadata server was doing all the work.
Alcotest can now write JUnit reports with no change to your tests, enough to chart which tests are flaky and which broke, and tags put a flaky test aside. It also nests tests and runs under wasm, and dune-release gets Windows fixes.
What changed between OxCaml 5.2.0+minus39 and 5.4.0+ox9, covering unboxed values, atomic fields, safer effects, and experimental polymorphism over layouts and modes.
I’m happy to announce that neocaml 0.11 is out! I never got around to writing about 0.10, which was mostly about neocaml-utop (a utop backend that talks to utop via its native editor protocol), but 0.11 is a different story.
Writing integration tests for our task store against a real PostgreSQL database, with MUnit and Testcontainers on one side and Alcotest and testcontainers-ocaml on the other
k7 0.9.0: record and replay CLI outputsdune tracingconsole: making OCaml CLI tools look good!imguiml 1.93.0Introcaml 5.5.2ocaml-ssl 0.8.1
Greenland is being processed into the Zarr store on a single L4; day10 stopped refreshing its base images and started carrying every package it might need; a five-year-old lwt workaround turned out to be the bug; monteverde’s drive was failing after all; and a kernel CVE was mitigated across 90 hosts in an evening.
An OCaml library for command-line tools that draw live tables and progress rows like full-screen apps but keep their output in the scrollback, shown with imitations of docker and cargo.
Keynoted the OpenUK Space Tech Radar launch with Tessera shortlisted for an OpenUK award, building a UK label map for Tessera from open government data, Tangled upgrades towards a data commons, new Part II weeknoters, Pembroke recaps, a ZoologyCon practice talk, and rules for AI in academic writing.
Moving Mollymawk from MirageOS and Lwt to our new OCaml 5 unikernel ecosystem.







