Wiki page in question: http://code.google.com/p/google-web-toolkit/wiki/WorkingWithMaven
Today I updated my Eclipse plugins and when I tried to update the "m2e connector for build-helper-maven-plugin" I got an error that the an older version of org.eclipse.jdt couldn't be found. After some digging around it seems that the m2e plugin is now hosted by Eclipse at: http://download.eclipse.org/technology/m2e/releases and the m2e connector for build-helper-maven-plugin is now installed by going to Preferences > Maven > Discovery > Open Catalog and selecting the "build helper" from that menu. Trying to setup a Maven environment in Eclipse Indigo the way the wiki page (http://code.google.com/p/google-web-toolkit/wiki/ WorkingWithMaven) suggest seems to no longer be valid. -- http://groups.google.com/group/Google-Web-Toolkit-Contributors