GMaven project from mvn archetype:generate doesn't `mvn compile`

Question

I generated an empty project with:

mvn archetype:generate -DarchetypeGroupId=org.codehaus.gmaven.archetypes -DarchetypeArtifactId=gmaven-archetype-basic -DarchetypeVersion=1.4

and it fails to mvn compile with a bunch messages "package groovy.lang does not exist".

(for archetypeVersion I just picked the last GMaven release version)

What's wrong with my Maven/GMaven/Groovy?

<?xml version="1.0" encoding="UTF-8"?>
<!--
    Generated from archetype; please customize.
-->

<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/maven-v4_0_0.xsd">

    <modelVersion>4.0.0</modelVersion>

    <groupId>a</groupId>
    <artifactId>asd</artifactId>
    <name>asd project</name>
    <version>1.0-SNAPSHOT</version>

    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>3.8.2</version>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.codehaus.gmaven</groupId>
                <artifactId>gmaven-plugin</artifactId>
                <version>1.4</version>
                <configuration>
                    <providerSelection>1.8</providerSelection>
                </configuration>
                <executions>
                    <execution>
                        <goals>
                            <goal>generateStubs</goal>
                            <goal>compile</goal>
                            <goal>generateTestStubs</goal>
                            <goal>testCompile</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

</project>

Answer 1

I have made an complete example for Groovy in Maven. Take a look at it.