Update Cargo/crates.io Sparse Index support #217
Merged
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Summary
The environment variable for Cargo/crates.io sparse index support has changed to
CARGO_REGISTRIES_CRATES_IO_PROTOCOL=sparse
. This PR updates that functionality. It is still enabled by default, but requires beta or nightly Rust to work. This should just start working when upstream Rust supports this in stable.Use Cases
Faster builds, less data loaded when pulling necessary packages.
Checklist