anchor.diff:          <goal>run</goal>
         </goals>
         <configuration>
  -        <userRepos>
  -          <userRepo>${basedir}/modules</userRepo>
  -          <userRepo>${project.build.directory}/modules</userRepo>
  -        </userRepos>
           <module>my.module</module>
           <version>1.0.0</version>
         </configuration>
  
positive.code:   <version>1.2.0-SNAPSHOT</version>
    <executions>
      <execution>
        <phase>compile</phase>
        <goals>
          <goal>compile</goal>
        </goals>
        <configuration>
          <userRepos>
            <userRepo>${basedir}/modules</userRepo>
          </userRepos>
          <targetModulesDirectory>${project.build.directory}/modules</targetModulesDirectory>
          <sources>
            <source>
              <fileset>
                <directory>${basedir}/src/main/ceylon</directory>
              </fileset>
            </source>
          </sources>
        </configuration>
      </execution>
    </executions>
  </plugin>
  ----
  
  === Run a Ceylon module
  
  ----
  <plugin>
  
negative.code: 
  === Compile Ceylon modules
  
  Compile `src/main/ceylon` to `${project.build.directory}/modules`
  
  ----
  <plugin>
    <groupId>org.ceylon-lang</groupId>
  