Yes, but that's sort of my point regarding complexity. "This crate is edition X, and an edition comes out every 3 years or so" is much easier to deal with. It

Yes, but that's sort of my point regarding complexity. "This crate is edition X, and an edition comes out every 3 years or so" is much easier to deal with. It reminds me a bit of Haskell language pragrams, which can be toggled per source file (module), and which are a huge mess.