Hello,
This question can be seen as related to this other question but I think it deserve to live on its own.
Resources given in answers where quite usefull but I had to add by hand a descriptor file to the assembly zip to get the connector accepted by nuxeo studio.
Not adding this file leads to a message which sounds like Import failed, descriptor file not found
Now I want to build a custom connector using maven and I have to cope the same issue.