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by inferiorhuman 354 days ago

  On the derive side, there's the usual proc-macro2/quote/syn trio, but
  those come up frequently in derive crates due to what they do, and other
  than that, there's just `heck`, which is again an obvious dependency in
  context.
They're common dependencies, sure, but not necessarily the same versions. So, yeah, it's entirely possible you'll end up building multiple versions of quote/syn.