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ocaml-ci moves to significant versions

The same OCaml build matrix updates which where deployed in opam-repo-ci have now been applied to ocaml-ci.

29 Apr 2026

Marc Elvers

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opam-repo-ci and OCaml significant versions

Updates to opam-repo-ci which pull in the latest ocaml-version and ocaml-dockerfile releases trim the build matrix and add in the latest releases of Alpine and Ubuntu.

27 Apr 2026

Marc Elvers

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opam-repo-ci Release Workflow

This is a high-level view of the steps required to update ocaml-repo-ci to use a new OCaml version.

02 Jun 2025

Marc Elvers

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Recent OCaml Versions

Following my post on discuss.ocaml.org, I have created a new release of ocurrent/ocaml-version that moves the minimum version of OCaml, considered as recent, from 4.02 to 4.08.

24 Mar 2025

Marc Elvers

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new opam features: more expressive dependencies

This blog will cover yet another aspect of the improvements opam 2.0 has over opam 1.2. I may be a little more technical than previous issues, as it covers a feature directed specifically at packagers and repository maintainers, and regarding the package definition format. Specifying dependencies in...

11 May 2017

OCamlPro

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opam 2.0 Beta is out!

UPDATE (2017-02-14): A beta2 is online, which fixes issues and performance of the opam build command. Get the new binaries, or recompile the opam-devel package and replace the previous binary. We are pleased to announce that the beta release of opam 2.0 is now live! You can try it already, bootstrap...

09 Feb 2017

OCamlPro

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opam 2.0 preview release!

We are pleased to announce a preview release for opam 2.0, with over 700 patches since 1.2.2. Version 2.0~alpha4 has just been released, and is ready to be more widely tested. This version brings many new features and changes, the most notable one being that OCaml compiler packages are no longer spe...

20 Sep 2016

OCamlPro

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OPAM 1.1.0 released

After a while staged as RC, we are proud to announce the final release of OPAM 1.1.0! Thanks again to those who have helped testing and fixing the last few issues. Important note The repository format has been improved with incompatible new features; to account for this, the new repository is now ho...

08 Nov 2013

OCamlPro

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OPAM 1.1.0 release candidate out

OPAM 1.1.0 is ready, and we are shipping a release candidate for packagers and all interested to try it out. This version features several bug-fixes over the September beta release, and quite a few stability and usability improvements. Thanks to all beta-testers who have taken the time to file repor...

14 Oct 2013

OCamlPro

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OPAM 1.1.0 beta released

We are very happy to announce the beta release of OPAM version 1.1.0! OPAM is a source-based package manager for OCaml. It supports multiple simultaneous compiler installations, flexible package constraints, and a Git-friendly development workflow which. OPAM is edited and maintained by OCamlPro, wi...

20 Sep 2013

OCamlPro

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