Problems adding local repository

[npasserini]

Reported by @SergeStinckwich
I switch to another repository, because I used gitfiletree to populate the Actalk one.

Another experiment after doing an Iceberg update. I'm cloning an existing repo with :
git clone [email protected]:SergeStinckwich/libUrbi.st.git
that contains files but no Pharo packages
and try to add this repo as a local repo, I have now