A dérive is an unplanned drift through the city. The Situationists coined it; cities keep proving it works.
It is also a gathering Halim puts together roughly once a month: a few people, a starting point, no itinerary, and whatever the city hands over from there.
When it is not running, the dérive is this page - everything worth drifting into in a given city, picked by Halim’s taste.
The gathering itself runs on a broadcast channel: one text when the next drift is set. Tap the button - WhatsApp opens with the join note prefilled. Send it and you’re on the list.