at it was my bad:

```
$> ls */__init__.py -l
-rw-r--r-- 1 root root 1034 Dec  5 22:51 client/__init__.py
-rw-r--r-- 1 root root 1034 Dec  5 22:51 common/__init__.py
-rw-r--r-- 1 root root 1034 Dec  5 22:51 server/__init__.py
```