https://github.com/talios/clojure-maven-plugin

$ java -jar clojure.jar user=> (+ 1 2)3user=>

• Interactive
• Cumbersome
• ...without rlwrap or JLine
• Somewhat retarded/amemic
• ...without dependencies

java -jar ~/.m2/repository/com/talios/test/1.0/test-1.0.jar:\  ~/.m2/repository/com/talios/test2/1.0/test2-1.0.jar:\  ~/.m2/repository/com/talios/foo/1.1/foo-1.1.jar:\  ~/.m2/repository/com/xml/parser/1.5/parser-1.5.jar:\  ~/.m2/repository/com/xmpp/xmpp/4.0/xmpp-4.0.jar org.clojure.Main

• Manually download JAR files?
• Keep JARs in source project?
• Not VCS friendly
• Not developer friendly
• ...without tooling support...

• Familiar to Developers
• Tool Support ( Jenkins, Idea etc. etc. )
• Dependency Management
• Convention Over Configuration
• Extendable
• ...maven-exec-plugin to the rescue

• clojure 1.0 - may 4, 2009
• clojure-maven-plugin repo - Feb 1, 2009
• clojure-maven-plugin 1.0 - Aug 24, 2009

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.theoryinpractise.it</groupId>
    <artifactId>rawdef1</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>clojure</packaging>
    <build>
        <plugins>
            <plugin>
                <groupId>com.theoryinpractise</groupId>
                <artifactId>clojure-maven-plugin</artifactId>
                <version>1.3.15</version>
                <extensions>true</extensions>
            </plugin>
        </plugins>
    </build>
    <dependencies>
        <dependency>
            <groupId>org.clojure</groupId>
            <artifactId>clojure</artifactId>
            <version>1.5.0</version>
        </dependency>
    </dependencies>
</project>

"SIMPLE" Minimum Maven POM

$ mvn clojure:replScanning for projects...
[INFO]
[INFO] ---------------------------------------------------------------
[INFO] Building packaging-test 1.0-SNAPSHOT
[INFO] ---------------------------------------------------------------
[INFO]
[INFO] --- clojure-maven-plugin:1.3.15:repl (default-cli) @ rawdef1 --
Clojure 1.5.0
user=> 

• Automatically downloaded JAR files!
• JARs NOT in source project!
• VCS friendly!
• Tool Managed Classpath!
• Developer friendly!

$ mvn clojure:compile
[INFO] --- clojure-maven-plugin:1.3.15:compile (default-cli) @ rawdef1 ---
Compiling packaging to /Users/amrk/Dropbox/cljmeetup/rawdef1/target/classes
Exception in thread "main" java.lang.IllegalArgumentException: Parameter declaration println should be a vector
    at clojure.core$assert_valid_fdecl.invoke(core.clj:6732)
    ...
[INFO] ------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------
[INFO] Total time: 1:30.115s
[INFO] Finished at: Mon May 20 21:52:04 NZST 2013
[INFO] Final Memory: 6M/76M

• "Compile Time" Failure!
• Non-standard error format :(
• Tool somewhat unfriendly :(
• Developer somewhat friendly :(

(ns packaging)(println "Hello During Compile")

[INFO] --- clojure-maven-plugin:1.3.15:compile (default-cli) @ rawdef1 
Compiling packaging to ~/Dropbox/cljmeetup/rawdef1/target/classes
Hello During Compile
[INFO] --------------------------------------------------------------
[INFO] BUILD SUCCESS

• Support for maven-toolchain-plugin
• Beware of compile order...
• Clojures Java interop could do with improving

• Support for AOT and NON-AOT "Compilation"

<configuration>
  <temporaryOutputDirectory>true</temporaryOutputDirectory>
</configuration>