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opam - A package manager for OCaml

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 was created and is maintained by OCamlPro.

To get started, checkout the Install and Usage guides.

Compiling this repo

This is all you need for installing and using opam, but if you want to use the opam-lib (to work on opam-related tools), you need to link it to installed libraries, rather than use make lib-ext which would cause conflicts. It's easier to already have a working opam installation in this case, so you can do it as a second step.

Compiling without OCaml

make cold is provided as a facility to compile OCaml, then bootstrap opam. You don't need need to run ./configure in that case, but you may specify CONFIGURE_ARGS if needed, e.g.:

make cold CONFIGURE_ARGS="--prefix ~/local"

NOTE: You'll still need GNU make.

Bug tracker

Have a bug or a feature request ? Please open an issue on our bug-tracker. Please search for existing issues before posting, and include the output of opam config report and any details that may help track down the issue.

Documentation

User Manual

The main documentation entry point to opam is the user manual, available using opam --help. To get help for a specific command, use opam <command> --help.

Guides and Tutorials

A collection of guides and tutorials is available online. They are generated from the files in doc/pages.

API, Code Documentation and Developer Manual

A more thorough technical document describing opam and specifying the package description format is available in the developer manual. make doc will otherwise make the API documentation available under doc/.

Community

Keep track of development and community news.

Contributing

We welcome contributions ! Please use Github's pull-request mechanism against the master branch of the opam repository. If that's not an option for you, you can use git format-patch and email us.

Versioning

The release cycle respects Semantic Versioning.

Related repositories

Copyright and license

The version comparison function in src/core/opamVersionCompare.ml is part of the Dose library and Copyright 2011 Ralf Treinen. Some code in src/core/opamJson.ml is taken from the documentation of Jsonm and is Copyright 2012 Daniel C. Bünzli. See the specific file for details.

All other code is:

Copyright 2012-2016 OCamlPro Copyright 2012 INRIA

All rights reserved. Opam is distributed under the terms of the GNU Lesser General Public License version 2.1, with the special exception on linking described in the file LICENSE.

Opam is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.