PSA: With @rustlang 1.41 you can deactivate optimizations for the proc macros which can reduce the compile times of your clean release builds by a lot!pic.twitter.com/mdGOXexTiS
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It wasn't easy to find. I really hope this becomes more visible, or maybe even the default setting. I'd be curious (maybe scared if I had to work with it) if there was a build that would run faster with optimized build scripts and proc macros.
It also seems like proc-macro authors could perhaps choose to put a flag in their crates for this? Not sure what if/how profile overrides in a dependency's cargo.toml affect things. (And does this flag set by a crate affect proc macros used by its dependencies?)
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I was curious about the interaction with a crate that re-exports a proc macro. Which level has to/can set it? Or is it possible at the top level only.
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Diesel's an interesting case since it both re-exports and uses the proc macros defined in diesel_derives
End of conversation
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