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Dune Package Management

Ali Caglayan · 3 June 2026 · Jane Street Office (2 & A Half Devonshire Square, London, EC2M 4UJ)

Dune package management is a project with the goal of teaching dune how to build and use opam packages. It has been in active development since 2023, and has started to take shape into something more polished and useful. Although it is still considered it experimental at this stage, I will discuss what is possible with it today (relocatable compiler, lockless building, OxCaml support), discuss some of the features we are currently working on (in-and-out, dev-tools), and finally give a glimpse of the road to stability.