Looking at http://wiki.eclipse.org/Tycho/Release_Notes/0.17 (https://bugs.eclipse.org/bugs/show_bug.cgi?id=395281) we should automatically include the local system p2 repository for dependency resolution in local mode.
As a workaround, builds would currently have to add the system local p2 repository to their tycho-eclipserun-plugin configuration. Eg. LOCALREPO="file://`pwd`/.m2/p2/repo" find eclipse.platform.common/bundles -name pom.xml -exec sed -i -e "s@http://download.eclipse.org/eclipse/updates/4.2@${LOCALREPO}@g" {} \; assuming that some remote repository is already specified.
I've pushed a fix as tycho-extras-0.17.0-2 for rawhide. If this resolves your issue, I can push too f19 as well. To test, simply remove the 'sed' line in your specfile that replaces the upstream repo, with the system's local repo, and rebuild.
That does appear to fix the issue, thanks.
tycho-extras-0.17.0-2.fc19 has been submitted as an update for Fedora 19. https://admin.fedoraproject.org/updates/tycho-extras-0.17.0-2.fc19
Package tycho-extras-0.17.0-2.fc19: * should fix your issue, * was pushed to the Fedora 19 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing tycho-extras-0.17.0-2.fc19' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2013-7757/tycho-extras-0.17.0-2.fc19 then log in and leave karma (feedback).
tycho-extras-0.17.0-2.fc19 has been pushed to the Fedora 19 stable repository. If problems still persist, please make note of it in this bug report.