The WindowBuilder project had resource issues. I’m happy to announce that WB has now a working Tycho build. Simply clone the WB repo and use ‘mvn clean verify’ command to build WB.
The result is afterwards located in org.eclipse.windowbuilder/org.eclipse.wb.releng.updatesite/target/repository
WindowBuilder seems to need more of help. My Tycho and cleanup work made me the primary commmitter of the project, and that is of course bad for an open source project. See WindowBuilder project page
In case you are interested in helping WB please provide Gerrit reviews or ask on the WB mailing list for areas where you can help.