[m2e-users] Conflicting lifecycle mapping on maven-compiler-plugin

[Vincent Vandenschrick <vvandens@xxxxxxxxx>]

Hi all,

After upgrading to M2E 1.6 on Luna, I'm facing a weird problem.

M2E reports errors on my projects complaining about :

Conflicting lifecycle mapping (plugin execution "org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (execution: default-compile, phase: compile)"). To enable full functionality, remove the conflicting mapping and run Maven->Update Project Configuration.

and :
Plugin execution not covered by lifecycle configuration: org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (execution: default-compile, phase: compile)


Same for the testCompile goal.



The fact is that I've overridden the compile goal with the following definition in order to leverage the groovy-eclipse-compiler :

     <plugin>
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-compiler-plugin</artifactId>
          <version>${compiler-plugin.version}</version>
          <configuration>
            <compilerId>groovy-eclipse-compiler</compilerId>
            <source>${java.version}</source>
            <target>${java.version}</target>
            <encoding>UTF-8</encoding>
            <!-- set verbose to be true if you want lots of uninteresting messages -->
            <!-- <verbose>true</verbose> -->
          </configuration>
          <dependencies>
            <dependency>
              <groupId>org.codehaus.groovy</groupId>
              <artifactId>groovy-eclipse-compiler</artifactId>
              <version>${groovy-eclipse-compiler.version}</version>
            </dependency>
            <dependency>
              <groupId>org.codehaus.groovy</groupId>
              <artifactId>groovy-eclipse-batch</artifactId>
              <version>${groovy-eclipse-batch.version}</version>
            </dependency>
          </dependencies>
      </plugin>

Everything ran smoothly on M2E 1.5. Of course, the necessary configurators are installed to take care of the groovy-eclipse-compiler.

Thanks in advance for any help,

Vincent