I just tried with IntelliJ, and it worked. I don't say that to rub it in but just to point out that the problem isn't on the repo side. It could be that Eclipse is looking at some default or common list of archetypes, and LensKit isn't among them. Try the Add Archetype
button and provide
- archetypeGroupId=org.grouplens.lenskit
- archetypeArtifactId=lenskit-archetype-simple-analysis
- archetypeVersion=2.0
and see what happens.