Ruby LSP indexing fails with undefined method required_positionals

[jmschp]

Description

Ruby LSP Information

Ruby LSP Information

VS Code Version

1.93.1

Ruby LSP Extension Version

0.8.1

Ruby LSP Server Version

0.18.3

Ruby LSP Addons

Ruby Version

3.3.5

Ruby Version Manager

asdf

Installed Extensions

Click to expand

• better-comments (3.0.2)
• cucumberautocomplete (3.0.5)
• vscode-erb-beautify (0.5.0)
• vscode-markdownlint (0.56.0)
• vscode-eslint (3.0.10)
• dotenv-vscode (0.28.1)
• gitlens (15.5.1)
• prettier-vscode (11.0.0)
• vscode-pull-request-github (0.96.0)
• todo-tree (0.0.226)
• vscode-drawio (1.6.6)
• prettier-sql-vscode (1.6.0)
• haml (1.4.1)
• mongodb-vscode (1.8.1)
• vscode-docker (1.29.3)
• vscode-dotnet-runtime (2.1.6)
• debugpy (2024.10.0)
• python (2024.14.1)
• vscode-pylance (2024.9.2)
• cpptools (1.21.6)
• cpptools-extension-pack (1.3.0)
• cpptools-themes (2.0.0)
• vscode-versionlens (1.14.2)
• material-icon-theme (5.11.1)
• platformio-ide (3.3.3)
• vscode-xml (0.27.1)
• vscode-yaml (1.15.0)
• trailing-spaces (0.4.1)
• ruby-lsp (0.8.1)
• code-spell-checker (4.0.13)
• code-spell-checker-portuguese-brazilian (2.2.1)
• vscode-stripe (3.2.6)
• vscode-stylelint (1.4.0)
• highlight-matching-tag (0.11.0)
• markdown-all-in-one (3.6.2)

Ruby LSP Settings

Click to expand

Workspace

{}

User

{
  "enableExperimentalFeatures": false,
  "enabledFeatures": {
    "codeActions": true,
    "diagnostics": true,
    "documentHighlights": true,
    "documentLink": true,
    "documentSymbols": true,
    "foldingRanges": true,
    "formatting": true,
    "hover": true,
    "inlayHint": true,
    "onTypeFormatting": true,
    "selectionRanges": true,
    "semanticHighlighting": true,
    "completion": true,
    "codeLens": true,
    "definition": true,
    "workspaceSymbol": true,
    "signatureHelp": true,
    "typeHierarchy": true
  },
  "featuresConfiguration": {},
  "addonSettings": {},
  "rubyVersionManager": {
    "identifier": "asdf"
  },
  "customRubyCommand": "",
  "formatter": "auto",
  "linters": null,
  "bundleGemfile": "",
  "testTimeout": 30,
  "branch": "",
  "pullDiagnosticsOn": "both",
  "useBundlerCompose": false,
  "bypassTypechecker": false,
  "rubyExecutablePath": "",
  "indexing": {},
  "erbSupport": true
}

Reproduction steps

1. Start the Ruby LSP using VS Code
2. Open a folder containing a Ruby file and a Gemfile specifing only rubocop
3. Indexing starts and fails immediately
4. See unexpected behavior

Code snippet or error message

Error while indexing: undefined method `required_positionals' for an instance of RBS::Types::UntypedFunction

I have tried in different Rails projects and I have the same behavior.

In an older Rails project running ruby 3.0.4, I get the following error:

Error while indexing: undefined method `required_positionals' for #<RBS::Types::UntypedFunction:0x000000012d923438 @return_type=#<RBS::Types::Bases::Any:0x000000012d923488 @location=#<RBS::Location:15920 buffer=/Users/jmschp/.asdf/installs/ruby/3.0.4/lib/ruby/gems/3.0.0/gems/rbs-3.6.0/core/method.rbs, start=138:19, pos=4835...4842, children= source="untyped">>>

[IlyaUmanets]

I see the same issue

[herko]

Same here. Using zed editor.

[thomasklemm]

Same here: Error while indexing: undefined method required_positionals' for an instance of RBS::Types::UntypedFunction`

[srpouyet]

It seems like indexing broke with today's release of version 3.6.0 of rbs. When pinning rbs to version 3.5.3 indexing works fine.

[vinistock]

Thank you for the bug report!

This PR should fix this #2631.

[andyw8]

We've released the fix in v0.18.4. To update, follow the steps here:
https://shopify.github.io/ruby-lsp/troubleshooting.html#outdated-version

[MattyMc]

Thank you @vinistock and @andyw8 ! Forcing up to v0.18.4 with this command from the docs fixed it for me:

BUNDLE_GEMFILE=.ruby-lsp/Gemfile bundle update ruby-lsp