Carrying dependencies (opens in new tab)

As an example, I feel the thread-local which stored global “parsing state” in rustc was 30% of the reason why rust-analyzer needed to exist as a project. Things which should be independent, parallel&incremental, and which look like they are, actually aren’t, which affects the semantics of the language and constraints its evolution. If that dependency had been explicit, maybe we would have ended up with the same Rust, but there’s a reasonable chance that, with constant reminders that “hey, our...