Unable to compile a maven project since groovy-eclipse feature update

[jan-krakora]

I have a maven project where I use groovy files for unit testing (Spock). I didn't change anything except update groovy-eclipse feature to 2.9.2.xx-201702030026-e46. Since then the project can't be build because of "The project was not built since its build path is incomplete. Cannot find the class file for groovy.lang.GroovyObject. Fix the build path then try building this project".

My system description:
Windows 10 x64
jdk 1.8.0_121
Eclipse 4.6.2

[eric-milles]

When you look at your project in Project Explorer, do you see groovy-all jar anywhere?

[jan-krakora]

Yes, it's in Maven dependencies (groovy-all-2.4.7.jar). More info from project properties:

• Groovy compiler set to 2.4
• Builders (Faceted Project Validation, Java, Maven Project, Validation)
• Libraries on build path (Groovy DSL Support, JRE System Library, Maven dependencies)
• Project Facets (Java, Utility Module)

pom.xml:

...

<dependency>
    <groupId>org.codehaus.groovy</groupId>
    <artifactId>groovy-all</artifactId>
    <version>2.4.7</version>
    <scope>test</scope>
</dependency>

...

<plugin>
    <artifactId>maven-compiler-plugin</artifactId>
    <version>3.3</version>			
    <configuration>
        <source>1.8</source>
	<target>1.8</target>
	<encoding>UTF-8</encoding>
    </configuration>
    <executions>
        <execution>
	    <id>test-compile</id>
	    <phase>process-test-sources</phase>
	        <goals>
	            <goal>testCompile</goal>
		</goals>
		<configuration>
		    <compilerId>groovy-eclipse-compiler</compilerId>
		</configuration>
	</execution>
    </executions>							
    <dependencies>
          <dependency>
              <groupId>org.codehaus.groovy</groupId>
              <artifactId>groovy-eclipse-compiler</artifactId>
              <version>2.9.2-01</version>
          </dependency>
          <dependency>
              <groupId>org.codehaus.groovy</groupId>
              <artifactId>groovy-eclipse-batch</artifactId>
              <version>2.4.3-01</version>
         </dependency>
    </dependencies>					
</plugin>

[jan-krakora]

There is also a strange record in the eclipse log file:

!ENTRY org.eclipse.jdt.core 4 4 2017-02-03 20:33:17.675
!MESSAGE Internal groovy compiler error.
!STACK 0
BUG! exception in phase 'canonicalization' in source unit 'D:\code\chystat\chystat\chystat-ui-tests\src\test\groovy\cz\diribet\chystat\geb\capability\page\CapabilityAnalysisPage.groovy' ClassNode#getTypeClass for cz.diribet.chystat.geb.module.PageWithNastaveniObdobi is called before the type class is set 
	at org.codehaus.groovy.ast.ClassNode.getTypeClass(ClassNode.java:1520)
	at org.codehaus.groovy.transform.trait.Traits.findHelpers(Traits.java:126)
	at org.codehaus.groovy.transform.trait.TraitComposer.doExtendTraits(TraitComposer.java:110)
	at org.codehaus.groovy.control.CompilationUnit$11.call(CompilationUnit.java:213)
	at org.codehaus.groovy.control.CompilationUnit.applyToPrimaryClassNodes(CompilationUnit.java:1221)
	at org.codehaus.groovy.control.CompilationUnit.doPhaseOperation(CompilationUnit.java:651)
	at org.codehaus.groovy.control.CompilationUnit.processPhaseOperations(CompilationUnit.java:629)
	at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:606)
	at org.codehaus.jdt.groovy.internal.compiler.ast.GroovyCompilationUnitDeclaration.processToPhase(GroovyCompilationUnitDeclaration.java:201)
	at org.codehaus.jdt.groovy.internal.compiler.ast.GroovyCompilationUnitDeclaration.analyseCode(GroovyCompilationUnitDeclaration.java:2289)
	at org.eclipse.jdt.internal.compiler.Compiler.process(Compiler.java:926)
	at org.eclipse.jdt.internal.compiler.ProcessTaskManager.run(ProcessTaskManager.java:141)
	at java.lang.Thread.run(Unknown Source)

[jan-krakora]

I solved the problem updating the groovy to 2.4.8 in my pom.xml file.