[Pharo-dev] Reach of Iceberg/git/tonel ?

Hi, So the future for Pharo is Iceberg/git/tonel and that is fine. My question however is: if I convert my external libraries to this new format, what is the reach of this new technology ? Can people still load code in older versions of Pharo ? I think 6.x is no problem, but what about earlier versions ? What about other Smalltalk implementations ? What is the official answer here ? A second question: suppose a repo is converted, is then still possible to copy a version over to an old MC repo ? Just to keep it in sync. Thx, Sven