Puzzle #2 - ????Cells

I made this puzzle while on breaks at work one day. Divide the grid into regions such that each number has that many lines drawn next to it. Also, there should be a region of each size from 1-8 cells. Standard rules, for reference.

puzz.link interface   penpa interface

There's some tricky logic to figure out here. Probably a 5/10 difficulty, mostly due to the size.