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Slightly optimize `cargo vendor` by alexcrichton · Pull Request #8937 · rust-lan...
source link: https://github.com/rust-lang/cargo/pull/8937
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alexcrichton commented 17 days ago
I've noticed recently that cargo vendor feels really sluggish and
slow, and apparently this is primarily because we delete the registry
caches and re-extract all the tarballs. This commit implements one
possible optimization without changing this, however, which is that
currently we both copy a file and checksum it, but that ends up reading
all the contents twice. Those two functions are now folded into one,
shaving about 3s locally from Cargo's own vendor times.
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