Move the .ccnet directory

I am running Seafile 6.2.11 under Fedora.
I own the installation of seafile-server.
At the first launch of seafile-client, a directory .ccnet is created in /home folder. I would like to change the destination of this folder.

On the client side, I changed the environment variable :
export CCNET_CONF_DIR='/new/directory/'
I deleted the /home/user/.ccnet directory and I launched seafile-client, but again the .ccnet folder is in /home/user.

How can I change this location ?