2009-10-31 21:35:25 +00:00
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# Leiningen
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2013-07-02 18:21:33 +00:00
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<img src="http://leiningen.org/img/leiningen.jpg"
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2012-01-13 02:04:57 +00:00
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alt="Leiningen logo" title="The man himself" align="right" />
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2012-01-13 00:10:32 +00:00
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2009-11-12 05:25:16 +00:00
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> "Leiningen!" he shouted. "You're insane! They're not creatures you can
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2012-05-10 02:22:04 +00:00
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> fight—they're an elemental—an 'act of God!' Ten miles long, two
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> miles wide—ants, nothing but ants! And every single one of them a
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2009-12-21 04:37:19 +00:00
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> fiend from hell..."
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2012-05-10 02:22:04 +00:00
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> - from Leiningen Versus the Ants by Carl Stephenson
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2009-10-31 21:35:25 +00:00
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2011-07-06 03:43:25 +00:00
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Leiningen is for automating Clojure projects without setting your hair on fire.
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2009-10-31 21:35:25 +00:00
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2009-11-12 05:25:16 +00:00
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## Installation
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2009-11-02 07:02:16 +00:00
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2012-01-24 03:06:29 +00:00
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If your preferred
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[package manager](https://github.com/technomancy/leiningen/wiki/Packaging)
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has a relatively recent version of Leiningen, try that first.
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Otherwise you can install by hand:
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2013-05-12 21:11:24 +00:00
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Leiningen bootstraps itself using the `lein` shell script; there is no
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separate install script. It handles installing its own dependencies,
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which means the first run will take longer.
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2010-03-13 05:04:11 +00:00
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2013-06-13 00:11:18 +00:00
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1. Make sure you have a Java JDK version 6 or later.
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2013-03-20 21:24:06 +00:00
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2. [Download the script](https://raw.github.com/technomancy/leiningen/stable/bin/lein).
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2013-03-22 16:26:59 +00:00
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3. Place it on your `$PATH`. (`~/bin` is a good choice if it is on your path.)
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4. Set it to be executable. (`chmod 755 ~/bin/lein`)
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2010-09-10 17:02:26 +00:00
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2013-06-13 00:08:51 +00:00
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### Windows
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2013-07-26 20:01:56 +00:00
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There is
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[an installer](http://leiningen-win-installer.djpowell.net/) which
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will handle downloading and placing Leiningen and its dependencies.
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2013-06-06 12:02:05 +00:00
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2013-07-26 20:01:56 +00:00
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The manual method of putting
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2013-03-15 20:09:58 +00:00
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[the batch file](https://raw.github.com/technomancy/leiningen/stable/bin/lein.bat).
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2013-07-26 20:01:56 +00:00
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on your `PATH` and running `lein self-install` should still work for
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most users. If you have [Cygwin](http://www.cygwin.com/) you should be
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able to use the shell script above rather than the batch file.
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2012-05-24 04:27:17 +00:00
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## Basic Usage
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2010-06-19 03:56:36 +00:00
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The
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[tutorial](https://github.com/technomancy/leiningen/blob/stable/doc/TUTORIAL.md)
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2010-06-19 03:56:36 +00:00
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has a detailed walk-through of the steps involved in creating a new
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project, but here are the commonly-used tasks:
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$ lein new [TEMPLATE] NAME # generate a new project skeleton
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2009-11-29 22:20:09 +00:00
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$ lein test [TESTS] # run the tests in the TESTS namespaces, or all tests
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2009-11-02 06:47:21 +00:00
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2012-02-08 05:00:02 +00:00
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$ lein repl # launch an interactive REPL session
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$ lein run -m my.namespace # run the -main function of a namespace
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$ lein uberjar # package the project and dependencies as standalone jar
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2011-10-19 23:24:30 +00:00
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Use `lein help` to see a complete list. `lein help $TASK` shows the
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usage for a specific task.
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2012-06-10 04:48:32 +00:00
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You can also chain tasks together in a single command by using the
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`do` task with comma-separated tasks:
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2012-06-10 04:48:32 +00:00
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$ lein do clean, test foo.test-core, jar
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Most tasks need to be run from somewhere inside a project directory to
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work, but some (`new`, `help`, `search`, `version`, and `repl`) may
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run from anywhere.
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2009-10-31 21:35:25 +00:00
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## Configuration
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The `project.clj` file in the project root should look like this:
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2012-01-13 01:10:35 +00:00
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```clj
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(defproject myproject "0.5.0-SNAPSHOT"
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:description "A project for doing things."
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:license "Eclipse Public License 1.0"
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:url "http://github.com/technomancy/myproject"
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:dependencies [[org.clojure/clojure "1.5.1"]]
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:plugins [[lein-ring "0.4.5"]])
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```
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2009-10-31 21:35:25 +00:00
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2012-05-10 02:22:04 +00:00
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The `lein new` task generates a project skeleton with an appropriate
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starting point from which you can work. See the
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[sample.project.clj](https://github.com/technomancy/leiningen/blob/stable/sample.project.clj)
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file (also available via `lein help sample`) for a detailed listing of
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configuration options.
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2012-05-25 01:26:46 +00:00
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The `project.clj` file can be customized further with the use of
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[profiles](https://github.com/technomancy/leiningen/blob/stable/doc/PROFILES.md).
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2012-01-29 21:59:07 +00:00
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2012-10-10 18:42:32 +00:00
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## Documentation
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Leiningen documentation is organized as a number of guides:
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* [Tutorial](https://github.com/technomancy/leiningen/blob/stable/doc/TUTORIAL.md)
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* [Polyglot (e.g. Clojure/Java) projects](https://github.com/technomancy/leiningen/blob/stable/doc/MIXED_PROJECTS.md)
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* Leiningen [Profiles](https://github.com/technomancy/leiningen/blob/stable/doc/PROFILES.md)
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* [Deployment & Distribution of Libraries](https://github.com/technomancy/leiningen/blob/stable/doc/DEPLOY.md)
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* [Sample project.clj](https://github.com/technomancy/leiningen/blob/stable/sample.project.clj)
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* [Writing Plugins](https://github.com/technomancy/leiningen/blob/stable/doc/PLUGINS.md)
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* [Writing Templates](https://github.com/technomancy/leiningen/blob/stable/doc/TEMPLATES.md)
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* [FAQ](https://github.com/technomancy/leiningen/blob/stable/doc/FAQ.md)
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* [Contributing](https://github.com/technomancy/leiningen/blob/stable/CONTRIBUTING.md)
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## Plugins
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Leiningen supports plugins which may contain both new tasks and hooks
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that modify behaviour of existing tasks. See
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[the plugins wiki page](https://github.com/technomancy/leiningen/wiki/Plugins)
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for a full list. If a plugin is needed for successful test or build
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runs, (such as `lein-tar`) then it should be added to `:plugins` in
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2011-10-21 21:36:40 +00:00
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project.clj, but if it's for your own convenience (such as
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`swank-clojure`) then it should be added to the `:plugins` list in the
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`:user` profile in `~/.lein/profiles.clj`. See the
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[profiles guide](https://github.com/technomancy/leiningen/blob/stable/doc/PROFILES.md)
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for details on how to add to your `:user` profile. The
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[plugin guide](https://github.com/technomancy/leiningen/blob/stable/doc/PLUGINS.md)
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explains how to write plugins.
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2010-10-25 02:49:48 +00:00
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2009-10-31 21:35:25 +00:00
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## License
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2013-01-03 06:32:07 +00:00
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Source Copyright © 2009-2013 Phil Hagelberg, Alex Osborne, Dan Larkin, and
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[contributors](https://github.com/technomancy/leiningen/contributors).
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Distributed under the Eclipse Public License, the same as Clojure
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uses. See the file COPYING.
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2009-10-31 21:35:25 +00:00
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2009-11-06 04:36:27 +00:00
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Thanks to Stuart Halloway for Lancet and Tim Dysinger for convincing
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me that good builds are important.
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2011-07-20 02:04:15 +00:00
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Images Copyright © 2010 Phil Hagelberg. Distributed under the Creative
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Commons Attribution + ShareAlike
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License. [Full-size version](http://leiningen.org/img/leiningen-full.jpg)
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available.
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