The main issue for me is that I'm working on packaging for a proprietary project where the ability to have an overlay flake and lock all my dependencies is crit

The main issue for me is that I'm working on packaging for a proprietary project where the ability to have an overlay flake and lock all my dependencies is critical. So I'm doing this with a flake and it works great, but I really didn't want to have to learn the old-and-busted way of doing it only to have to migrate later, particularly when the ergonomics of flakes is so great.