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Day10: opam package testing tool

ocurrent/obuilder is the workhorse of OCaml CI testing, but the current deployment causes packages to be built repeatedly because the opam switch is assembled from scratch for each package, leading to common dependencies being frequently recompiled. day10 uses an alternative model whereby switches are assembled from their component packages.

16 Feb 2026

Marc Elvers

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Transitive Reduction of Package Graph

I have previously written about using a topological sort of a directed acyclic graph (DAG) of package dependencies to create an ordered list of installation operations. I now want to create a transitive reduction, giving a graph with the same vertices and the fewest number of edges possible.

23 Jun 2025

Marc Elvers

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Opam Health Check: or How we Got to 90+% of Packages Building with Dune Package Management

A follow-up to the previous blog post about Dune package management, highlighting more bug fixes and summarising the project

05 Jun 2025

Tarides

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Expanding Dune Package Management to the Rest of the Ecosystem

Explanation of our learnings from attempting to build all Dune packages in opam-repository using Dune package management.

11 Apr 2025

Tarides

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Dune Developer Preview: Installing The OCaml Compiler With Dune Package Management

Dune Developer Preview now supports direct OCaml compiler installation, streamlining setups and enabling shared installations across projects for faster development.

16 Oct 2024

Tarides

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Dune Package Management: Revolutionising OCaml Development

At Tarides, we’ve been working on an initiative to improve the OCaml development experience: Dune Package Management. As outlined in the Platform Roadmap, which was created through community collaboration, the aim is to unify all OCaml development workflows under a single, streamlined tool. After …

09 Oct 2024

Tarides

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