As part of our work for release, I changed the home of Iceberg into his own place: https://github.com/pharo-vcs/iceberg So, now to install you will need: Metacello new baseline: 'Iceberg'; repository: 'github://pharo-vcs/iceberg:dev-0.4'; load. I also uploaded a Configuration to the *catalog>http://catalog.pharo.org*, so you can load while doing the transition.