Yeah, in some commit they substituted the absint(quantity) code in some places -which was the problem for me- for abs(quantity) allowing floating point values for quantities. That solved my problem. However, if I remember right, I think I had to remove some woocommerce hook or filter that still was transforming quantities to integers (some cleaning function, probably).
Well, that’s the thing. I really need all of them. Even if I stick only with half unit (0.5kg, 1kg, 1.5kg, 2.0kg…) I’d still have an undetermined number of variations, since clients can ask for any quantity (as in the physical shop)