Compiling Jnario specs with Maven (SNAPSHOT).

pom.xml

<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>com.mycompany.app</groupId>
  <artifactId>my-app</artifactId>
  <packaging>jar</packaging>
  <version>1.0-SNAPSHOT</version>
  <name>my-app</name>
  <url>http://maven.apache.org</url>
  <repositories>
    <repository>
      <id>Jnario Snapshots</id>
      <url>https://oss.sonatype.org/content/repositories/snapshots</url>
    </repository>
  </repositories>

  <pluginRepositories>
    <pluginRepository>
      <id>Jnario Snapshots</id>
      <url>https://oss.sonatype.org/content/repositories/snapshots</url>
    </pluginRepository>
    <pluginRepository>
      <id>Xtend</id>
      <url>http://build.eclipse.org/common/xtend/maven/</url>
    </pluginRepository>
  </pluginRepositories>

  <dependencies>
    <dependency>
      <groupId>org.jnario</groupId>
      <artifactId>org.jnario.lib.maven</artifactId>
      <version>0.1.0-SNAPSHOT</version>
      <scope>test</scope>
    </dependency>
  </dependencies>
  <build>
    <plugins>
      <plugin>
        <groupId>org.jnario</groupId>
        <artifactId>jnario-maven-plugin</artifactId>
        <version>0.1.0-SNAPSHOT</version>
        <executions>
          <execution>
            <goals>
              <goal>testCompile</goal>
            </goals>
          </execution>
        </executions>
      </plugin>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-surefire-plugin</artifactId>
        <version>2.12</version>
        <configuration>
          <includes>
            <include>**/*Spec*.java</include>
            <include>**/*Feature.java</include>
            <include>**/*Test.java</include>
            <include>**/*TestCase.java</include>
          </includes>
        </configuration>
      </plugin>
    </plugins>
  </build>
</project>

I am not sure. Best thing would be to ask on the Xtend mailing list.