Preferred line length not being used with Dart files

[Zambrella]

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• Completed

Describe the bug / provide steps to reproduce it

I'm writing Dart and I can't get Zed to use my preferred line length. It is using the default 80. This problem is only with Dart files and all other LSP related stuff is working with Dart no problem. Is there something I'm missing?

This is my settings.json:

{
  "assistant": {
    "default_model": {
      "provider": "copilot_chat",
      "model": "gpt-4o"
    },
    "version": "2"
  },
  "telemetry": {
    "metrics": false
  },
  "base_keymap": "VSCode",
  "theme": {
    "mode": "system",
    "light": "Ayu Light",
    "dark": "Ayu Mirage"
  },
  "buffer_font_size": 18,
  "buffer_font_family": "Monaspace Neon",
  "vim_mode": true,
  "formatter": "language_server",
  "inlay_hints": {
    "enabled": true,
    "type_hints": true,
    "show_type_hints": false,
    "show_parameter_hints": false,
    "show_other_hints": true
  },
  "hour_format": "hour24",
  "preferred_line_length": 140,
  "relative_line_numbers": true,
  "tab_bar": {
    "show": true,
    "show_nav_history_buttons": false
  },
  "languages": {
    "Dart": {
      "preferred_line_length": 140
    },
    "Python": {
      "format_on_save": {
        "language_server": {
          "name": "ruff"
        }
      },
      "formatter": {
        "language_server": {
          "name": "ruff"
        }
      },
      "language_servers": [
        "pyright",
        "ruff"
      ]
    }
  },
  "lsp": {
    "dart": {
      "initialization_options": {
        "dart.lineLength": 140
      }
    }
  }
}

Environment

Zed: v0.164.1 (Zed Preview)
OS: macOS 15.1.1
Memory: 16 GiB
Architecture: aarch64

If applicable, add mockups / screenshots to help explain present your vision of the feature

No response

If applicable, attach your Zed.log file to this issue.

Zed.log

2024-12-03T10:02:04.374028Z [INFO] ========== starting zed ==========
2024-12-03T10:02:04.441968Z [INFO] Opening main db
2024-12-03T10:02:04.443733Z [INFO] Opening main db
2024-12-03T10:02:04.467714Z [INFO] Using git binary path: Some("/Applications/Zed Preview.app/Contents/MacOS/git")
2024-12-03T10:02:04.707505Z [INFO] set environment variables from ...
2024-12-03T10:02:04.712395Z [INFO] Prompt template overrides directory found at /Users/douglastodd/.config/zed/prompt_overrides.
2024-12-03T10:02:04.713219Z [INFO] extensions updated. loading 10, reloading 0, unloading 0
2024-12-03T10:02:04.793367Z [INFO] Opening main db
2024-12-03T10:02:04.819624Z [ERROR] failed to parse snippet

Caused by:
    expected an integer
2024-12-03T10:02:04.819696Z [ERROR] failed to parse snippet

Caused by:
    expected an integer
2024-12-03T10:02:04.819743Z [ERROR] failed to parse snippet

Caused by:
    expected an integer
2024-12-03T10:02:04.819804Z [ERROR] failed to parse snippet

Caused by:
    expected an integer
2024-12-03T10:02:04.81985Z [ERROR] failed to parse snippet

Caused by:
    expected an integer
2024-12-03T10:02:04.819901Z [ERROR] failed to parse snippet

Caused by:
    expected an integer
2024-12-03T10:02:04.819943Z [ERROR] failed to parse snippet

Caused by:
    expected an integer
2024-12-03T10:02:04.822835Z [INFO] building git repository, `.git` path in the worktree: ".git"
2024-12-03T10:02:04.851385Z [INFO] set status on client 0: Authenticating
2024-12-03T10:02:04.85221Z [INFO] Opening main db
2024-12-03T10:02:04.856121Z [INFO] set status on client 67067: Connecting
2024-12-03T10:02:04.856759Z [INFO] Opening main db
2024-12-03T10:02:04.916827Z [INFO] attempting to start language server "yaml-language-server", path: "/Users/douglastodd/Projects/stash_hub", id: 1
2024-12-03T10:02:04.917377Z [INFO] fetching latest version of language server "yaml-language-server"
2024-12-03T10:02:04.994508Z [INFO] connected to rpc endpoint https://collab.zed.dev/rpc
2024-12-03T10:02:05.288015Z [INFO] using project environment variables shell launched in "/Users/douglastodd/Projects/stash_hub". ...
2024-12-03T10:02:05.593691Z [INFO] add_connection;
2024-12-03T10:02:05.594063Z [INFO] set status on client 67067: Connected { peer_id: PeerId { owner_id: 616, id: 7082547 }, connection_id: ConnectionId { owner_id: 0, id: 0 } }
2024-12-03T10:02:05.89858Z [INFO] attempting to start language server "dart", path: "/Users/douglastodd/Projects/stash_hub", id: 2
2024-12-03T10:02:05.898681Z [INFO] attempting to start language server "snippet-completion-server", path: "/Users/douglastodd/Projects/stash_hub", id: 3
2024-12-03T10:02:05.89985Z [INFO] starting language server process. binary path: "/Users/douglastodd/fvm/default/bin/dart", working directory: "/Users/douglastodd/Projects/stash_hub", args: ["language-server", "--protocol=lsp"]
2024-12-03T10:02:06.215953Z [INFO] starting language server process. binary path: "/Users/douglastodd/Library/Application Support/Zed/extensions/work/snippets/simple-completion-language-server-v0.1.1/simple-completion-language-server", working directory: "/Users/douglastodd/Projects/stash_hub", args: []
2024-12-03T10:02:07.386507Z [INFO] starting language server process. binary path: "/opt/homebrew/bin/node", working directory: "/", args: ["/Users/douglastodd/Library/Application Support/Zed/copilot/copilot-v0.7.0/dist/language-server.js", "--stdio"]
2024-12-03T10:02:07.51937Z [WARN] unhandled capability registration: Registration { id: "3", method: "workspace/didChangeConfiguration", register_options: None }
2024-12-03T10:02:07.72392Z [INFO] downloading language server "yaml-language-server"
2024-12-03T10:02:07.962491Z [INFO] Language server with id 0 sent unhandled notification window/logMessage:
{
  "type": 3,
  "message": "[lsp] GitHub Copilot Language Server 1.236.0 initialized"
}
2024-12-03T10:02:07.962563Z [INFO] Language server with id 0 sent unhandled notification workspace/configuration:
{
  "items": [
    {
      "section": "github.copilot"
    },
    {
      "section": "github-enterprise"
    },
    {
      "section": "http"
    },
    {
      "section": "telemetry"
    }
  ]
}
2024-12-03T10:02:08.044175Z [INFO] starting language server process. binary path: "/opt/homebrew/bin/node", working directory: "/Users/douglastodd/Projects/stash_hub", args: ["/Users/douglastodd/Library/Application Support/Zed/languages/yaml-language-server/node_modules/yaml-language-server/bin/yaml-language-server", "--stdio"]
2024-12-03T10:02:08.095163Z [INFO] Language server with id 0 sent unhandled notification window/logMessage:
{
  "type": 3,
  "message": "[certificates] Removed 8 expired certificates"
}
2024-12-03T10:02:08.261391Z [WARN] Generic lsp request to dart failed: File is not being analyzed
2024-12-03T10:02:08.261544Z [ERROR] inlay hint update task for range failed: Error {
    context: "inlay hint fetch task",
    source: Error {
        context: "inlay hints LSP request",
        source: "File is not being analyzed",
    },
}
2024-12-03T10:02:08.317484Z [WARN] unhandled capability registration: Registration { id: "6b1fc2f6-9553-47fe-9560-65f49e05ea64", method: "workspace/didChangeWorkspaceFolders", register_options: Some(Object {}) }
2024-12-03T10:02:08.317655Z [WARN] unhandled capability registration: Registration { id: "e8506f2d-be75-484d-9469-3f952f998747", method: "workspace/didChangeConfiguration", register_options: Some(Object {}) }
2024-12-03T10:02:08.378181Z [INFO] Language server with id 0 sent unhandled notification featureFlagsNotification:
{
  "rt": false,
  "sn": false,
  "chat": true,
  "ic": true,
  "ep": false,
  "pc": false,
  "x": true
}
2024-12-03T10:02:08.378298Z [INFO] Language server with id 0 sent unhandled notification conversation/preconditionsNotification:
{
  "results": [
    {
      "type": "chat_enabled",
      "status": "ok"
    }
  ],
  "status": "ok"
}
2024-12-03T10:02:08.681719Z [WARN] Generic lsp request to dart failed: File is not being analyzed
2024-12-03T10:02:08.681901Z [WARN] Generic lsp request to dart failed: File is not being analyzed
2024-12-03T10:02:08.681977Z [ERROR] inlay hint update task for range failed: Error {
    context: "inlay hint fetch task",
    source: Error {
        context: "inlay hints LSP request",
        source: "File is not being analyzed",
    },
}
2024-12-03T10:02:08.682216Z [ERROR] inlay hint update task for range failed: Error {
    context: "inlay hint fetch task",
    source: Error {
        context: "inlay hints LSP request",
        source: "File is not being analyzed",
    },
}

[notpeter]

Broken Suggestion

Can you try with:

  "lsp": {
    "dart": {
      "settings": {
        "dart": {
          "lineLength": 140
        }
      }
    }
  }

• See: default settings should provide dart.lineLength inherited from Zed settings zed-extensions/dart#2

[notpeter]

Try this, it worked for me:

  "lsp": {
    "dart": {
      "settings": {
        "lineLength": 140
      }
    }
  }

[Zambrella]

Try this, it worked for me:

  "lsp": {
    "dart": {
      "settings": {
        "lineLength": 140
      }
    }
  }

This is working for me too. Thanks a lot for sharing!

[notpeter]

I've documented this in the Zed Dart docs and opened:

• default settings should provide dart.lineLength inherited from Zed settings zed-extensions/dart#2

Thanks!