Ruff doesn't use the locally configured settings

[cos4ni2s]

Reproduction steps

1. Start Zed
2. Configure Ruff under lsp.ruff.settings
3. Open a Python file
4. Press Ctrl-Shift-I
5. See the result

Current vs. Expected behavior

Current behavior: Formatting isn't customized
Expected behavior: Formatting is customized

Zed version and system specs

Zed: v0.222.4+stable (Zed)
OS: Linux Wayland cachyos unknown
Memory: 7.1 GiB
Architecture: x86_64
GPU: AMD Radeon Graphics (RADV RENOIR) || radv || Mesa 25.3.5-arch1.2

Attach Zed log file

Zed.log

Relevant Zed settings

settings.json

"lsp": {
	"ruff": {
		"settings": {
			"indent-width": 4,
			"line-length": 128,
			"format": {
				"docstring-code-format": true,
				"docstring-code-line-length": "dynamic",
				"exclude": [
					
				],
				"indent-style": "tab",
				"line-ending": "native",
				"preview": false,
				"quote-style": "double",
				"skip-magic-trailing-comma": true
			},
			"lint": {
				"ignore": [
					"E301",
					"E302",
					"E303",
					"E305",
					"E306"
				]
			}
		}
	}
},

Relevant Keymap

keymap.json

(for AI issues) Model provider details

No response

If you are using WSL on Windows, what flavor of Linux are you using?

None

[lingyaochu]

It may because you have the wrong settings. The settings for ruff in zed should be contained in lsp.ruff.initialization_options.settings, as an example, like this

{
  "lsp": {
    "ruff": {
      "initialization_options": {
        "settings": {
          // Ruff server settings go here
          "lineLength": 80,
          "lint": {
            "extendSelect": ["I"],
          }
        }
      }
    }
  }
}

You can check ruff configuration in zed and zed doc for more information

[cos4ni2s]

The problem persists with:

"lsp": {
	"ruff": {
		"initialization_options": {
			"settings": {
				"indent-width": 4,
				"line-length": 128,
				"format": {
					"docstring-code-format": true,
					"docstring-code-line-length": "dynamic",
					"exclude": [
						
					],
					"indent-style": "tab",
					"line-ending": "native",
					"preview": false,
					"quote-style": "double",
					"skip-magic-trailing-comma": true
				},
				"lint": {
					"ignore": [
						"E301",
						"E302",
						"E303",
						"E305",
						"E306"
					]
				}
			}
		}
	}
}

[lingyaochu]

Your configuration for Ruff is still problematic. The settings for the Ruff language server in the editor's settings.json are not the same as those in .toml files. For example, you should use line-length in .toml, but lineLength in settings.json. Check the Ruff editor settings documentation for more details.

Additionally, many settings available in the general Ruff configuration are not listed in the editor-specific settings, and it is unclear if they are supported directly in lsp.ruff.initialization_options.settings. If you encounter issues, you may need to migrate those settings to the lsp.ruff.initialization_options.settings.configuration field, this setting is described here.

[cos4ni2s]

I was able to get it to work by further nesting that stuff under lsp.ruff.initialization_options.settings.configuration.
line-length in settings.json is correct and should not be modified to lineLength.
Thank you for your time and effort.

"lsp": {
	"ruff": {
		"initialization_options": {
			"settings": {
				"configuration": {
					"indent-width": 4,
					"line-length": 128,
					"format": {
						"docstring-code-format": true,
						"docstring-code-line-length": "dynamic",
						"exclude": [
							
						],
						"indent-style": "tab",
						"line-ending": "native",
						"preview": false,
						"quote-style": "double",
						"skip-magic-trailing-comma": true
					},
					"lint": {
						"ignore": [
							"E301",
							"E302",
							"E303",
							"E305",
							"E306"
						]
					}
				}
			}
		}
	}
}

I suggest this to be documented.