I think this is a case of YAGNI. Yes, there are cases where you have a big graph of sources and products and you can't plan up-front what you'll need. I.E. you'

I think this is a case of YAGNI. Yes, there are cases where you have a big graph of sources and products and you can't plan up-front what you'll need. I.E. you're at a megacorp and your dependencies are created by some branch of the organization that is actively hostile to yours. I dunno. But I think that most people just don't have those problems.