you need to tell it the config to use. I never used this tool, but possibly a command like syncevolution --print-configs can give you some helps.
syncevolution --print-sessions google-calendar
Dear Enemy: may the Lord hate you and all your kind, may you be turned orange in hue, and may your head fall off at an awkward moment.
How to tell Heretics from Catholics?Papal legate Arnaud Amalric answers :Caedite eos. Novit enim Dominus qui sunt eius.(Kill them all, the Lord will recognise His own.)
“Get thee to Hell, where Asmodeus himself may suckle upon your diseased teat!” Barnabas Collins