Leiningen (software)

{{Short description|Build automation tool}}

{{Infobox software

| name = Leiningen

| logo =

| screenshot =

| caption =

| collapsible =

| author = Phil Hagelberg

| developer = Jean Niklas L'orange

| released = {{start date|2009|11|17}}

| discontinued =

| latest release version = 2.9.8

| latest release date = {{start date and age|2021|11|11}}{{cite web

| url = https://codeberg.org/leiningen/leiningen/src/branch/main/NEWS.md

| title = Releases · technomancy/leiningen

| website = github.com

| access-date = 2022-07-01

}}

| programming language = Clojure

| operating system = Cross-platform

| platform =

| size =

| language =

| genre = Software development tools

| license = Eclipse Public License

| website = {{URL|https://leiningen.org/}}

}}

Leiningen is a build automation and dependency management tool for the simple configuration of software projects written in the Clojure programming language.

Leiningen was created by Phil Hagelberg. Phil started the project with the aim of simplifying the complexities of Apache Maven, while

offering a way of describing the most common build requirements of Clojure projects in idiomatic Clojure. These aims are succinctly captured in the project's tag line, "Automate Clojure projects without setting your hair on fire".

Leiningen's features can be extended via a plugin system, and it is supplied with a command line interface that can initiate a number of actions, which include:

• The generation of a simple Clojure project skeleton
• Ahead-of-time (AOT) compilation
• Dependency resolution (with automatic library downloading)
• Start an interactive REPL that has the classpath correctly set to load project dependencies
• Packaging of project code and dependencies into an "uberjar" .jar file

Leiningen is the most widely-contributed-to open-source Clojure project. It is featured in chapter 8 of the book Clojure Programming.

{{cite book

| first1 = Chas

| last1 = Emerick

| first2 = Brian

| last2 = Carper

| first3 = Christophe

| last3 = Grand

| date = April 19, 2012

| title = Clojure Programming

| url = https://archive.org/details/clojureprogrammi00emer_387

| url-access = limited

| publisher = O'Reilly Media

| edition = 1st

| isbn = 978-1-4493-9470-7

| chapter = Chapter 8: Organizing and Building Clojure Projects

| pages = [https://archive.org/details/clojureprogrammi00emer_387/page/n366 347]–353

}}

A Leiningen sting is when the table tennis ball strikes the edge of the table unexpectedly and leaves the returnee neutralised