OPAM 1.1.0 beta released

Date: 2013-09-20
Category: Tooling
Tags: opam

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, with continuous support from OCamlLabs and the community at large (including its main industrial users such as Jane-Street and Citrix).

Since its first official release last March, we have fixed many bugs and added lots of new features and stability improvements. New features go from more metadata to the package and compiler descriptions, to improved package pin workflow, through a much faster update algorithm. The full changeset is included below.

We are also delighted to see the growing number of contributions from the community to both OPAM itself (35 contributors) and to its metadata repository (100+ contributors, 500+ unique packages, 1500+ packages). It is really great to also see alternative metadata repositories appearing in the wild (see for instance the repositories for Android, Windows and so on). To be sure that the community efforts will continue to benefit to everyone and to underline our committment to OPAM, we are rehousing it at http://opam.ocaml.org and switching the license to CC0 (see issue #955, where 85 people are commenting on the thread).

The binary installer has been updated for OSX and x86_64:

You can also get the new version either from Anil's unstable PPA: add-apt-repository ppa:avsm/ppa-testing apt-get update sudo apt-get install opam

or build it from sources at :

NOTE: If you upgrade from OPAM 1.0, the first time you will run the new opam binary it will upgrade its internal state in an incompatible way: THIS PROCESS CANNOT BE REVERTED. We have tried hard to make this process fault-resistant, but failures might happen. In case you have precious data in your ~/.opam folder, it is advised to backup that folder before you upgrade to 1.1.


About OCamlPro:

OCamlPro is a R&D lab founded in 2011, with the mission to help industrial users benefit from state-of-the art programming languages like OCaml and Rust.

We design, create and implement custom ad-hoc software for our clients. We also have a long experience in developing and maintaining open-source tooling for OCaml, such as Opam, TryOCaml, ocp-indent, ocp-index and ocp-browser, and we contribute to the core-development of OCaml, notably with our work on the Flambda optimizer branch.

Another area of expertise is that of Formal Methods, with tools such as our SMT Solver Alt-Ergo (check our Alt-Ergo Users'). We also provide vocational trainings in OCaml and Rust, and we can build courses on formal methods on-demand. Do not hesitate to reach out by email: contact@ocamlpro.com.