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https://github.com/ericseppanen/cargo-cranky

An easy to configure wrapper for Rust's clippy
https://github.com/ericseppanen/cargo-cranky

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An easy to configure wrapper for Rust's clippy

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README 

        
# cargo-cranky



I wish that I could check in a file that would specify Rust lints for my entire Cargo workspace, and have that be applied to all the crates, libraries, binaries, and examples.



Doing this with just Rust/Cargo/Clippy can be a bit of a pain. `cargo-cranky` makes it a little easier!



`cargo-cranky` is just a wrapper around `cargo clippy`; it examines your `Cranky.toml` config file, and constructs the necessary `cargo clippy` command line. Most arguments are passed through to clippy, so it should work from every context where clippy works (IDEs, CI scripts, etc).



For example, if `Cranky.toml` contains this:



```toml

warn = [

  "clippy::empty_structs_with_brackets",

  "clippy::cast_possible_truncation",

]

```



and I run `cargo cranky`, I get those extra lints:

```txt

warning: found empty brackets on struct declaration

  --> src/main.rs:11:12

   |

11 | struct Unit {}

   |            ^^^

```



```txt

warning: casting `u64` to `u8` may truncate the value

  --> src/main.rs:23:9

   |

23 |         x as u8

```



This is exactly the same as manually running `cargo clippy` with the extra parameters `--warn clippy::empty_structs_with_brackets` and `--warn clippy::cast_possible_truncation`.



You may find some useful clippy lints for your project in the [clippy documentation][clippy-docs]. I recommend browsing the "pedantic" and "restriction" groups.



### Installing



`cargo install cargo-cranky`



### Configuring



Create a file called `Cranky.toml` at the top of your project tree. The file can contain keys `allow`, `warn`, or `deny` that contain an array of clippy lint names.



Example:

```toml

deny = [

  # My crate should never need unsafe code.

  "unsafe_code",

]



warn = [

  "clippy::empty_structs_with_brackets",

  "clippy::cast_possible_truncation",

]



allow = [

  "clippy::double_comparisons",

]

```



Note: in the case of overlap, `allow` will always override `warn`, which in turn will always override `deny`. The order of these fields in `Cranky.toml` has no effect.



### FAQ



**Can I specify non-clippy lints?**



Yes! Try for example `unsafe_code` or `missing_docs`.



Note: Clippy lints should be specified using the long syntax, e.g. `clippy::some_lint_name`. Clippy will issue a warning if the prefix is missing.



**Does it work with vscode?**



Yes! Just type `cranky` into the "Check On Save: Command" setting, or drop this into `settings.json`:

```txt

{

    "rust-analyzer.check.command": "cranky"

}

```



Set it back to "check" (or "clippy") to return to the previous behavior.



**Is this reckless or non-idiomatic?**



That depends on how you use it. If your goal is to enforce a non-idiomatic coding style, that's probably not a great idea.



If you want to suppress lints that are enabled by default, it's probably better to do that using the `#[allow(clippy::some_lint)]` syntax in the source file, since that gives you a chance to add a comment explaining your reasoning.



The main goal of this tool is to make it easier to enable additional clippy lints, that improve code maintainability or safety (i.e. `clippy::cast_possible_truncation`).



**I have ~~complaints~~ suggestions!**



Please [file a GitHub issue][github-issue] if you have ideas that could make this tool better.



[github-issue]: https://github.com/ericseppanen/cargo-cranky/issues

[clippy]: https://github.com/rust-lang/rust-clippy#readme

[clippy-docs]: https://rust-lang.github.io/rust-clippy/stable/index.html