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52cb865c5c
2 crates were still using Rust 2018, including the base `nu` crate. This PR upgrades them to Rust 2021. If you're aware of any reason why this is a bad idea, please speak now or forever hold your peace. ## Context I was moving benchmarks from `nu-plugin` to the base crate and couldn't figure out why they wouldn't compile. Turns out the benchmarks rely on some Rust 2021 features. Would be nice to have everything on 2021.
Nushell core libraries and plugins
These sub-crates form both the foundation for Nu and a set of plugins which extend Nu with additional functionality.
Foundational libraries are split into two kinds of crates:
- Core crates - those crates that work together to build the Nushell language engine
- Support crates - a set of crates that support the engine with additional features like JSON support, ANSI support, and more.
Plugins are likewise also split into two types:
- Core plugins - plugins that provide part of the default experience of Nu, including access to the system properties, processes, and web-connectivity features.
- Extra plugins - these plugins run a wide range of different capabilities like working with different file types, charting, viewing binary data, and more.