That’s what’s happening in Germany right now. with cannabis.
They legalized it on April 1st and at the same time somehow not. They call it partial legalization. You can have 25g in public and theoretically smoke weed in public. but not in sight to schools, playgrounds, sports clubs, etc. All around there is a 100m spell. In cities that’s like everywhere .And you’re not allowed to smoke in front of children. The law is so vague that it can be in such a way that you have to change the side of the street when a child comes towards you. Or you would have to put out the joint.In reality, it is very difficult to really consume 100% publicly.
At home you can grow up to 3 plants. But you may only have 50g of dried material, the rest must be destroyed. You are not allowed to make chemical extracts . You can only buy in cannabis social clubs which are allowed to be at. You must be a registered member there. You can buy 50g a month there. The cherry on top at the moment is that the CSC are only allowed to start in July, so there will only be harvests at the end of the year. Since you can’t have any selfgrow yourself since the beginning of April, you can’t have legal weed yet.
The whole law is planned to make it fail. You can later say ‘we tried’. And make it impossible to really legalize for the next few decades.
Edit: You cannot sell or share any material. To a party you have to smoke your own joint.