Plugin versions are not Sakai versions. You can see what version we are using from the master/project.properties:
sakai.plugin.version=2.2
Try with the latest version number:
maven plugin:download -DgroupId=sakaiproject -DartifactId=sakai -Dversion=2.2
Also, as a reminder, use the new SVN:
maven.repo.remote = http://source.sakaiproject.org/maven/
one-stop shopping for all your Sakai needs.
– Glenn
Glenn R. Golden
Software Architect, University Of Michigan
ggolden@umich.edu