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README: clippy-driver is not a replacement for rustc

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Currently, `clippy-driver` may run codegen, but this is an
implementation detail.

See https://github.com/rust-lang/rust-clippy/issues/8035.

Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
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Miguel Ojeda 2021-11-27 17:10:19 +01:00
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@ -98,22 +98,18 @@ If you want to run Clippy **only** on the given crate, use the `--no-deps` optio
cargo clippy -p example -- --no-deps
```
### As a rustc replacement (`clippy-driver`)
### Using `clippy-driver`
Clippy can also be used in projects that do not use cargo. To do so, you will need to replace
your `rustc` compilation commands with `clippy-driver`. For example, if your project runs:
```terminal
rustc --edition 2018 -Cpanic=abort foo.rs
```
Then, to enable Clippy, you will need to call:
Clippy can also be used in projects that do not use cargo. To do so, run `clippy-driver`
with the same arguments you use for `rustc`. For example:
```terminal
clippy-driver --edition 2018 -Cpanic=abort foo.rs
```
Note that `rustc` will still run, i.e. it will still emit the output files it normally does.
Note that `clippy-driver` is designed for running Clippy only and should not be used as a general
replacement for `rustc`. `clippy-driver` may produce artifacts that are not optimized as expected,
for example.
### Travis CI