coc-ruff

ruff-lsp extension for coc.nvim.

Install

CocInstall:

:CocInstall @yaegassy/coc-ruff

scoped packages

e.g. vim-plug:

Plug 'yaegassy/coc-ruff', {'do': 'yarn install --frozen-lockfile'}

Note

Detecting the "ruff" command from the execution environment

The ruff command used by ruff-lsp uses the ruff command installed with the ruff-lsp dependency.

To use the ruff command installed in the virtual environment of a project created by venv, poetry, etc., ruff.path must be set to an absolute path.

coc-ruff adds the feature to automatically detect ruff commands in the execution environment and use them in ruff-lsp.

If you do not need this feature, set ruff.useDetectRuffCommand to false.

coc-settings.json:

{
  "ruff.useDetectRuffCommand": false
}

[EXPERIMENTAL] Enabling the Rust-based language server

To use the new Rust-based language server (ruff server), you'll need to enable the ruff.nativeServer setting in the coc-settings.json:

{
  "ruff.nativeServer": true
}

In coc-ruff, the ruff binary is detected from the runtime environment (PATH) by default to start the native server. If you want to specify a custom ruff binary path, please set ruff.nativeBinaryPath.

{
  "ruff.nativeBinaryPath": "/path/to/ruff"
}

Format (DocumentFormatting)

The black equivalent formatting feature has been added to ruff. This feature is enabled by default in ruff-lsp "v0.0.42" and later.

If you want to disable this feature, set the ruff.disableDocumentFormatting setting to true.

coc-settings.json:

{
  "ruff.disableDocumentFormatting": true
}

---

If you are using ruff-lsp "v0.4.1" or earlier and want to use this feature, please follow these steps.

1. Please set ruff.enableExperimentalFormatter to true.
2. If you are using other Python-related coc-extensions alongside coc-ruff, please disable the formatting feature of those coc-extensions.
   • e.g. coc-pyright:
     • Please set python.formatting.provider to none.

coc-settings.json:

{
  "ruff.enableExperimentalFormatter": true,
  "python.formatting.provider": "none"
}

Auto-fixing

Auto-fixing can be executed via the ruff.executeAutofix command or CodeAction.

Set ruff.autoFixOnSave setting to true if you also want auto-fixing to be performed when the file is saved.

coc-settings.json:

{
  "ruff.autoFixOnSave": true
}

Order of detection of ruff-lsp used by extensions

coc-ruff detects and starts ruff-lsp in the following priority order.

1. ruff.serverPath (If there is a setting)
2. current python3/python environment (e.g. ruff-lsp in global or virtual environment)
3. built-in ruff-lsp (Installation commands are also provided)

Bult-in install

coc-ruff allows you to create an extension-only "venv" and install ruff-lsp.

When using coc-ruff for the first time, if ruff-lsp is not present in the runtime environment, you will be prompted to do a built-in install.

To use the built-in installation feature, execute the following command.

:CocCommand ruff.builtin.installServer

Configuration options

• ruff.enable: Enable coc-ruff extension, default: true
• ruff.nativeServer: Use the integrated Rust-based language server, available now in Beta, default: false
• ruff.nativeBinaryPath: Custom path for the ruff binary when using the native server. If no value is set, the ruff command will be detected from the runtime environment, default: ""
• ruff.disableDocumentFormatting: Disable document formatting only, default: false
• ruff.disableHover: Disable hover only, default: false
• ruff.useDetectRuffCommand: Automatically detects the ruff command in the execution environment and sets ruff.path, default: true
• ruff.autoFixOnSave: Turns auto fix on save on or off, default: false
• ruff.client.codeAction.showDocumantaion.enable: Whether to display the code action for open the Ruff rule documentation web page included in the diagnostic information, default: false
• ruff.serverPath: Custom path to the ruff-lsp command. If not set, the ruff-lsp command found in the current Python environment or in the venv environment created for the extension will be used, default: ""
• ruff.builtin.pythonPath: Python 3.x path (Absolute path) to be used for built-in install, default: ""
• ruff.trace.server: Traces the communication between coc.nvim and the ruff-lsp, default: "off"

Other settings have the same configuration as ruff-vscode.

Commands

• ruff.executeAutofix: Fix all auto-fixable problems
• ruff.executeFormat: Format document
• ruff.executeOrganizeImports: Format imports
• ruff.debugInformation: Print debug information (native server only)
• ruff.showLogs: Show logs
• ruff.restart: Restart Server
• ruff.builtin.installServer: Install ruff-lsp
  • It will be installed in this path:
    • Mac/Linux:
      • ~/.config/coc/extensions/@yaegassy/coc-ruff-data/ruff-lsp/venv/bin/ruff-lsp
    • Windows:
      • ~\AppData\Local\coc\extensions\@yaegassy\coc-ruff-data\ruff-lsp\venv\Scripts\ruff-lsp.exe

Thanks

• astral-sh/ruff
• astral-sh/ruff-lsp
• astral-sh/ruff-vscode

License

MIT

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This extension is built with create-coc-extension