# Description
Where possible, this PR replaces usages of raw `libc` bindings to
instead use safe interfaces from the `nix` crate. Where not possible,
the `libc` version reexported through `nix` was used instead of having a
separate `libc` dependency.
# Description
When implementing a `Command`, one must also import all the types
present in the function signatures for `Command`. This makes it so that
we often import the same set of types in each command implementation
file. E.g., something like this:
```rust
use nu_protocol::ast::Call;
use nu_protocol::engine::{Command, EngineState, Stack};
use nu_protocol::{
record, Category, Example, IntoInterruptiblePipelineData, IntoPipelineData, PipelineData,
ShellError, Signature, Span, Type, Value,
};
```
This PR adds the `nu_engine::command_prelude` module which contains the
necessary and commonly used types to implement a `Command`:
```rust
// command_prelude.rs
pub use crate::CallExt;
pub use nu_protocol::{
ast::{Call, CellPath},
engine::{Command, EngineState, Stack},
record, Category, Example, IntoInterruptiblePipelineData, IntoPipelineData, IntoSpanned,
PipelineData, Record, ShellError, Signature, Span, Spanned, SyntaxShape, Type, Value,
};
```
This should reduce the boilerplate needed to implement a command and
also gives us a place to track the breadth of the `Command` API. I tried
to be conservative with what went into the prelude modules, since it
might be hard/annoying to remove items from the prelude in the future.
Let me know if something should be included or excluded.
# Description
This PR fixes#11901. For some reason `debug info` stopped reporting
information. This hopefully fixes it. I think something changes in the
`sysinfo` crate that stopped it from working.
# User-Facing Changes
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helps us keep track of breaking changes. -->
# Tests + Formatting
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- `cargo test --workspace` to check that all tests pass (on Windows make
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- `cargo run -- -c "use std testing; testing run-tests --path
crates/nu-std"` to run the tests for the standard library
> **Note**
> from `nushell` you can also use the `toolkit` as follows
> ```bash
> use toolkit.nu # or use an `env_change` hook to activate it
automatically
> toolkit check pr
> ```
-->
# After Submitting
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# Description
This PR adds a new command called `debug info`. I'm not sure if the name
is right but we can rename it if needed. The purpose of this command is
to show a user how much memory nushell is using. This is what the output
looks like.
I feel like the further we go with nushell, the more we'll need to
easily monitor the memory usage. With this command, we should easily be
able to do that with scripts or just running the command.
```nushell
❯ debug info | table -e
╭─────────┬──────────────────────────────────────────────────────────────────────╮
│pid │31036 │
│ppid │29388 │
│ │╭─────────────────┬────────────────────────────────────────────────╮ │
│process ││memory │63.5 MB │ │
│ ││virtual_memory │5.6 GB │ │
│ ││status │Runnable │ │
│ ││root │C:\cartar\debug │ │
│ ││cwd │C:\Users\us991808\source\repos\forks\nushell\ │ │
│ ││exe_path │C:\cartar\debug\nu.exe │ │
│ ││command │c:\cartar\debug\nu.exe -l │ │
│ ││name │nu.exe │ │
│ ││environment │{record 110 fields} │ │
│ │╰─────────────────┴────────────────────────────────────────────────╯ │
│ │╭────────────────┬───────╮ │
│system ││total_memory │17.1 GB│ │
│ ││free_memory │5.9 GB │ │
│ ││used_memory │11.3 GB│ │
│ ││available_memory│5.9 GB │ │
│ │╰────────────────┴───────╯ │
╰─────────┴──────────────────────────────────────────────────────────────────────╯
```
> [!NOTE]
The `process.environment` is not the nushell `$env` but the environment
that the process was created with at launch time.
# User-Facing Changes
<!-- List of all changes that impact the user experience here. This
helps us keep track of breaking changes. -->
# Tests + Formatting
<!--
Don't forget to add tests that cover your changes.
Make sure you've run and fixed any issues with these commands:
- `cargo fmt --all -- --check` to check standard code formatting (`cargo
fmt --all` applies these changes)
- `cargo clippy --workspace -- -D warnings -D clippy::unwrap_used` to
check that you're using the standard code style
- `cargo test --workspace` to check that all tests pass (on Windows make
sure to [enable developer
mode](https://learn.microsoft.com/en-us/windows/apps/get-started/developer-mode-features-and-debugging))
- `cargo run -- -c "use std testing; testing run-tests --path
crates/nu-std"` to run the tests for the standard library
> **Note**
> from `nushell` you can also use the `toolkit` as follows
> ```bash
> use toolkit.nu # or use an `env_change` hook to activate it
automatically
> toolkit check pr
> ```
-->
# After Submitting
<!-- If your PR had any user-facing changes, update [the
documentation](https://github.com/nushell/nushell.github.io) after the
PR is merged, if necessary. This will help us keep the docs up to date.
-->
