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# clippy-flymake
A Flymake backend for [Clippy](https://doc.rust-lang.org/stable/clippy/index.html), the Rust linter.
## Instructions
Use with [rust-mode](https://elpa.nongnu.org/nongnu/rust-mode.html):
```elisp
(use-package clippy-flymake
:vc (:fetcher sourcehut :repo mgmarlow/clippy-flymake)
:hook (rust-mode . clippy-flymake-setup-backend))
```
### Eglot users
Eglot [fully manages Flymake](https://github.com/joaotavora/eglot/issues/268) so you'll need some extra code to make it cooperate:
```elisp
;; Instruct Eglot to stop managing Flymake
(add-to-list 'eglot-stay-out-of 'flymake)
;; Add the Eglot hook to Flymake diagnostic functions so we don't lose Eglot
;; functionality
(add-hook 'eglot--managed-mode-hook
(lambda ()
(add-hook 'flymake-diagnostic-functions #'eglot-flymake-backend nil t)
(flymake-mode 1)))
```
### Complete use-package example
```elisp
(use-package clippy-flymake
:vc (:fetcher sourcehut :repo mgmarlow/clippy-flymake)
:hook (rust-mode . clippy-flymake-setup-backend))
(defun manually-activate-flymake ()
(add-hook 'flymake-diagnostic-functions #'eglot-flymake-backend nil t)
(flymake-mode 1))
(use-package eglot
:ensure t
:hook ((rust-mode . eglot-ensure)
(eglot--managed-mode . manually-activate-flymake))
:config
(add-to-list 'eglot-stay-out-of 'flymake))
```
You can confirm that Flymake is running correctly by opening up a Rust buffer and examining `flymake-running-backends':
```
Running backends: clippy-flymake-backend, eglot-flymake-backend
```
## Contributing
Please contribute improvements via email to [the mailing list](https://lists.sr.ht/~mgmarlow/public-inbox) using [git send-email](https://git-send-email.io/). When posting patches, edit the `[PATCH]` line to include `clippy-flymake`:
```
[PATCH clippy-flymake] Add thing to stuff
```
Learn more about contributing via email from [Sourcehut's documentation](https://man.sr.ht/lists.sr.ht/etiquette.md).
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