I want to keep a history of builds, but am not very interested in keeping the
maven built artifacts. Anything we want to keep should be a release, done
outside of hudson.

I use the following commands to delete the archive files, which get into GBs
very quickly, because we build a tar.gz of all dependencies, and we end of with
many copies of this.

cd hudson-data/jobs/
cd ProjectX
find modules -name archive -print0 | xargs -0 rm -rf

It would be good to have an option to not keep this archive or clear it after a
few days, but keep the builds.