We are proud to announce that OPAM 1.1.1 has just been released.

This minor release features mostly stability and UI/doc improvements over OPAM 1.1.0, but also focuses on improving the API and tools to be a better base for the platform (functions for opam-doc, interface with tools like opamfu and opam-installer). Lots of bigger changes are in the works, and will be merged progressively after this release.

Installing

Installation instructions are available on the wiki.

Note that some packages may take a few days until they get out of the pipeline. If you're eager to get 1.1.1, either use our binary installer or compile from source.

The 'official' package repository is now hosted at opam.ocaml.org, synchronised with the Git repository at http://github.com/ocaml/opam-repository, where you can contribute new packages descriptions. Those are under a CC0 license, a.k.a. public domain, to ensure they will always belong to the community.

Thanks to all of you who have helped build this repository and made OPAM such a success.

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 hosted at [opam.ocaml.org][], and the legacy repository at [opam.ocamlpro.com][] is kept to support OPAM 1.0 installations, but is unlikely to benefit from many package updates. Migration to [opam.ocaml.org][] will be done automatically as soon as you upgrade your OPAM version.

You're still free, of course, to use any third-party repositories instead or in addition.

Installing

NOTE: When switching from 1.0, the internal state will need to be upgraded. THIS PROCESS CANNOT BE REVERTED. We have tried hard to make it 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 1.1.0.

Using the binary installer:

• download and run http://www.ocamlpro.com/pub/opam_installer.sh

Using the .deb packages from Anil's PPA (binaries are [currently syncing][1]): add-apt-repository ppa:avsm/ppa apt-get update sudo apt-get install opam

For OSX users, the homebrew package will be updated shortly.

or build it from sources at :

• http://www.ocamlpro.com/pub/opam-full-1.1.0.tar.gz
• https://github.com/ocaml/opam/releases/tag/1.1.0

For those who haven't been paying attention

OPAM is a source-based package manager for OCaml. It supports multiple simultaneous compiler installations, flexible package constraints, and a Git-friendly development workflow. 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).

The 'official' package repository is now hosted at [opam.ocaml.org][], synchronised with the Git repository at [http://github.com/ocaml/opam-repository][repo], where you can contribute new packages descriptions. Those are under a CC0 license, a.k.a. public domain, to ensure they will always belong to the community.

Thanks to all of you who have helped build this repository and made OPAM such a success.

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 reports, and helped a lot tackling the remaining issues.

Repository change to opam.ocaml.org

This release is synchronized with the migration of the main repository from ocamlpro.com to ocaml.org. A redirection has been put in place, so that all up-to-date installation of OPAM should be redirected seamlessly. OPAM 1.0 instances will stay on the old repository, so that they won't be broken by incompatible package updates.

We are very happy to see the impressive amount of contributions to the OPAM repository, and this change, together with the licensing of all metadata under CC0 (almost pubic domain), guarantees that these efforts belong to the community.

If you are upgrading from 1.0

The internal state will need to be upgraded at the first run of OPAM 1.1.0. THIS PROCESS CANNOT BE REVERTED. We have tried hard to make it 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 1.1.0.

Installing

Using the binary installer:

• download and run http://www.ocamlpro.com/pub/opam_installer.sh

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 :

• http://www.ocamlpro.com/pub/opam-full-1.1.0.tar.gz
• https://github.com/OCamlPro/opam/releases/tag/1.1.0-RC

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 https://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:

• http://www.ocamlpro.com/pub/opam_installer.sh

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 :

• http://www.ocamlpro.com/pub/opam-full-1.1.0-beta.tar.gz
• https://github.com/OCamlPro/opam/releases/tag/1.1.0-beta

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.

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 http://www.ocamlpro.com/blog/2013/01/17/opam-beta.html 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, which should be useful for beginners with OCaml and OPAM, is an auto-configuration tool. This tool easily enables all the features of OPAM (auto-completion, fix the loading of scripts for the toplevel, opam-switch-eval alias, etc). This tool runs interactively on each opam init invocation. If you don't like OPAM to change your configuration files, use opam init --no-setup. If you trust the tool blindly, use opam init --auto-setup. You can later review the setup by doing opam config setup --list and call the tool again using opam config setup (and you can of course manually edit your ~/.profile (or ~/.zshrc for zsh users), ~/.ocamlinit and ~/.opam/opam-init/*).

Please report:

• Bug reports and feature requests for the OPAM tool: http://github.com/OCamlPro/opam/issues
• Packaging issues or requests for a new packages: http://github.com/OCamlPro/opam-repository/issues
• General queries to: https://lists.ocaml.org/listinfo/platform
• More specific queries about the internals of OPAM to: https://lists.ocaml.org/listinfo/opam-devel

Install

Packages for Debian and OSX (at least homebrew) should follow shortly and I'm looking for volunteers to create and maintain rpm packages. The binary installer is up-to-date for Linux and Darwin 64-bit architectures, the 32-bit version for Linux should arrive shortly.

If you want to build from sources, the full archive (including dependencies) is available here:

http://www.ocamlpro.com/pub/opam-full-latest.tar.gz

Upgrade

If you are upgrading from 0.9.* you won't have anything special to do apart installing the new binary. You can then update your package metadata by running opam update. If you want to use the auto-setup feature, remove the "eval opam config env line you have previously added in your ~/.profile and run opam config setup --all.

So everything should be fine. But you never know ... so if something goes horribly wrong in the upgrade process (of if your are upgrading from an old version of OPAM) you can still trash your ~/.opam, manually remove what OPAM added in your ~/.profile (~/.zshrc for zsh users) and ~/.ocamlinit, and start again from scratch.

Random stats

Great success on github. Thanks everybody for the great contributions!

https://github.com/OCamlPro/opam: +2000 commits, 26 contributors https://github.com/OCamlPro/opam-repository: +1700 commits, 75 contributors, 370+ packages

on http://opam.ocamlpro.com/ +400 unique visitor per week, 15k 'opam update' per week +1300 unique visitor per month, 55k 'opam update' per month 3815 unique visitor since the alpha release