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# Description in https://github.com/nushell/nushell/issues/8311 and the discord server, the idea of moving the default banner from the `rust` source to the `nushell` standar library has emerged 😋 however, in order to do this, one need to have access to all the variables used in the default banner => all of them are accessible because known constants, except for the startup time of the shell, which is not anywhere in the shell... #### this PR adds exactly this, i.e. the new `startup_time` to the `$nu` variable, which is computed to have the exact same value as the value shown in the banner. ## the changes in order to achieve this, i had to - add `startup_time` as an `i64` to the `EngineState` => this is, to the best of my knowledge, the easiest way to pass such an information around down to where the banner startup time is computed and where the `$nu` variable is evaluated - add `startup-time` to the `$nu` variable and use the `EngineState` getter for `startup_time` to show it as a `Value::Duration` - pass `engine_state` as a `&mut`able argument from `main.rs` down to `repl.rs` to allow the setter to change the value of `startup_time` => without this, the value would not change and would show `-1ns` as the default value... - the value of the startup time is computed in `evaluate_repl` in `repl.rs`, only once at the beginning, and the same value is used in the default banner 👌 # User-Facing Changes one can now access to the same time as shown in the default banner with ```bash $nu.startup-time ``` # Tests + Formatting - 🟢 `cargo fmt --all` - 🟢 `cargo clippy --workspace -- -D warnings -D clippy::unwrap_used -A clippy::needless_collect` - 🟢 `cargo test --workspace` # After Submitting ``` $nothing ``` |
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nu-protocol
The nu-protocol crate holds the definitions of structs/traits that are used throughout Nushell. This gives us one way to expose them to many other crates, as well as make these definitions available to each other, without causing mutually recursive dependencies.