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 is created and maintained by OCamlPro.
To get started, checkout the Quick Install guide.
For transparency and insight into our release cycle, and for striving to maintain backward compatibility, OPAM will be maintained under the Semantic Versioning guidelines as much as possible.
Releases will be numbered with the following format:
And constructed with the following guidelines:
- Breaking backward compatibility bumps the major (and resets the minor and patch)
- New additions without breaking backward compatibility bumps the minor (and resets the patch)
- Bug fixes and misc changes bumps the patch
For more information on SemVer, please visit http://semver.org/.
It is expected than upgrade work transparently between minor releases:
an OPAM binary with version
x.y.z should be able to use the OCaml
packages and compilers created with OPAM version
Have a bug or a feature request ? Please open a new issue. Before opening any issue, please search for existing issues.
Keep track of development and community news.
Have a question that's not a feature request or bug report? Ask on the mailing list.
Chat with fellow OPAMers in IRC. On the
irc.freenode.netserver, in the
Please submit all pull requests against the
The main documentation entry point to OPAM is the user manual,
opam --help. To get help for a specific command, use
opam <command> --help.
A collection of tutorials are available online at http://opam.ocamlpro.com.
These tutorials are automatically generated from the
are also available in PDF format in the
API, Code Documentation and Developpper Manual
The API documentation is available
and under the
doc/html/ directory; the developer manual is in
Copyright and license
Copyright 2012-2013 OCamlPro
Copyright 2012 INRIA
All rights reserved. OPAM is distributed under the terms of the GNU Public License version 3.0.
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 General Public License for more details.