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# System prepended metadata

title: RustNL notes

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# RustNL notes

## cargo upgrade

See https://internals.rust-lang.org/t/feedback-on-cargo-upgrade-to-prepare-it-for-merging/17101/130

## global features

https://github.com/rust-lang/cargo/issues/2980

## dep_feature

`#[cfg(dep_feature = "feature")]` or `#[cfg(feature = "dep/feature")]`
- Do we need opt-in to the dependencies features
  - Concern for passing in everything as it would be ``<deps>*<features>` arguments
  - Could read it from rlib but more work

## Global caching

See https://github.com/rust-lang/cargo/issues/5931