Really painful to run GWTP in Maven - gwt

Question

I've been struggling all day to run GWTP with Maven, essentially I created a GWTP gwt application using the Eclipse plugin. And added a simple welcome presenter. Tried it without maven and it works well running from eclipse.
However when I convert it to a maven project (I'm using m2eclipse plugin) everything breaks. So I added the required dependencies and the gwtp dependency:
<dependency>
<groupId>com.google.gwt.inject</groupId>
<artifactId>gin</artifactId>
<version>1.5.0</version>
</dependency>
<!-- MVP component -->
<dependency>
<groupId>com.gwtplatform</groupId>
<artifactId>gwtp-all</artifactId>
<version>${gwtp.version}</version>
</dependency>
However when I try to run it I get this error:
Caused by: java.lang.RuntimeException: Deferred binding failed for 'com.google.gwt.event.shared.EventBus' (did you forget to inherit a required module?)
Any ideas why its quite hard to make GWTP with maven.

Answer 1

I think you might be missing the gwt-user dependency. Here is my maven pom.xml for an GWTP project:
<properties>
<gwtVersion>2.4.0</gwtVersion>
<gwtp.version>0.7</gwtp.version>
</properties>
<dependencies>
<dependency>
<groupId>com.google.gwt</groupId>
<artifactId>gwt-user</artifactId>
<version>${gwtVersion}</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>com.gwtplatform</groupId>
<artifactId>gwtp-mvp-client</artifactId>
<version>${gwtp.version}</version>
<scope>provided</scope>
</dependency>
<!-- Dispatch component -->
<dependency>
<groupId>com.gwtplatform</groupId>
<artifactId>gwtp-dispatch-client</artifactId>
<version>${gwtp.version}</version>
<scope>provided</scope> <!-- Remove for GWTP 0.5.1 and earlier -->
</dependency>
<!-- Tester component -->
<dependency>
<groupId>com.gwtplatform</groupId>
<artifactId>gwtp-tester</artifactId>
<version>${gwtp.version}</version>
<scope>test</scope>
</dependency>
In case you use the newest gwtp 0.7 be aware that they switched from the depreciated classes in com.google.gwt.event.shared to com.google.web.bindery.event.shared.
See here for more details.