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# Description Make `echo` const. - It's a very simple command, there is no reason for it to not be const. - It's return type `any` is utilized in tests to type erase values, this might be useful for testing const evaluation too. - The upcoming custom command attribute feature can make use of it as a stopgap replacement for `const def` commands. # User-Facing Changes `echo` can be used in const contexts. # Tests + Formatting # After Submitting N/A
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.