src/tools/clippy/rustc_tools_util/README.md

# rustc_tools_util

A small tool to help you generate version information
for packages installed from a git repo

## Usage

Add a `build.rs` file to your repo and list it in `Cargo.toml`
````toml
build = "build.rs"
````

List rustc_tools_util as regular AND build dependency.
````toml
[dependencies]
rustc_tools_util = "0.4.2"

[build-dependencies]
rustc_tools_util = "0.4.2"
````

In `build.rs`, generate the data in your `main()`

```rust
fn main() {
    rustc_tools_util::setup_version_info!();
}
```

Use the version information in your main.rs

```rust
fn show_version() {
    let version_info = rustc_tools_util::get_version_info!();
    println!("{}", version_info);
}
```

This gives the following output in clippy:
`clippy 0.1.66 (a28f3c8 2022-11-20)`

## Repository

This project is part of the rust-lang/rust-clippy repository. The source code
can be found under `./rustc_tools_util/`.

The changelog for `rustc_tools_util` is available under:
[`rustc_tools_util/CHANGELOG.md`](https://github.com/rust-lang/rust-clippy/blob/master/rustc_tools_util/CHANGELOG.md)

## License

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Copyright 2014-2025 The Rust Project Developers

Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
<LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
option. All files in the project carrying such notice may not be
copied, modified, or distributed except according to those terms.

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