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opam 2.4 release

Feedback on this post is welcomed on Discuss! We are extremely happy to announce the release of opam 2.4.0 and encourage all users to upgrade. Please read on for installation and upgrade instructions. Major changes On opam init the compiler chosen for the default switch will no longer be ocaml-syste...

23 Jul 2025

OCamlPro

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opam 2.3.0 release!

Feedback on this post is welcomed on Discuss! As mentioned in our talk at the OCaml Workshop 2024, we decided to switch to a time-based release cycle (every 6 months), starting with opam 2.3. As promised, we are very pleased to announce the release of opam 2.3.0, and encourage all users to upgrade. ...

13 Nov 2024

OCamlPro

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Opam 102: Pinning Packages

Welcome, dear reader, to a new opam blog post! Today we take an additional step down the metaphorical rabbit hole with opam pin, the easiest way to catch a ride on the development version of a package in opam. We are aware that our readers are eager to see these blog posts venture on the developer s...

25 Mar 2024

OCamlPro

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new opam features: "opam install DIR"

After the opam build feature was announced followed a lot of discussions, mainly having to do with its interface, and misleading name. The base features it offered, though, were still widely asked for: a way to work directly with the project in the current directory, assuming it contains definitions...

04 May 2017

OCamlPro

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new opam features: "opam build"

UPDATE: after discussions following this post, this feature was abandoned with the interface presented below. See this post for the details and the new interface! The new opam 2.0 release, currently in beta, introduces several new features. This post gets into some detail on the new opam build comma...

16 Mar 2017

OCamlPro

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OPAM 1.0.0 released

I am very happy to announce the first official release of OPAM! Many of you already know and use OPAM so I won't be long. Please read beta-release-of-opam for a longer description. 1.0.0 fixes many bugs and add few new features to the previously announced beta-release. The most visible new feature, ...

15 Mar 2013

OCamlPro

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Beta Release of OPAM

OPAM is a source-based package manager for OCaml. It supports multiple simultaneous compiler installations, flexible package constraints, and a Git-friendly development workflow. I have recently announced the beta-release of OPAM on the caml-list, and this blog post introduces the basics to new OPAM...

17 Jan 2013

OCamlPro

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