Hi, Another solution would be to simply use the update-alternatives system to manage /usr/bin/python. python3 would have a higher priority than python2. Users would still have the possibility to switch /usr/bin/python to python2 explicitly if they require it... -- Fabrice BAUZAC-STEHLY PGP 015AE9B25DCB0511D200A75DE5674DEA514C891D