Importing Different Versions of the Same Package at the Same Time

It has the same effect as dead code elimination, but it's sort of, like, rather than pulling everything in and then throwing away the things you don't need, you just only pull it in the first place. And if somebody depends on your library, they'll actually just get those same definitions. It doesn't really matter which dependencies they bring in. They're gong to get the same definitions. I don't know of anybody is doing package management exactly like that.