Ruby LSP Rails failed to initialize server

[reppiee]

I've installed ruby-lsp and successfully using that using the Ruby LSP VSCode extension, however Ruby LSP Rails fails to initialize its server with the following error:

2024-09-16 11:47:06.554 [info] (core) Ruby LSP Rails failed to initialize server: 
/Users/steven/.asdf/installs/ruby/3.2.5/lib/ruby/gems/3.2.0/gems/ruby-lsp-rails-0.3.11/lib/ruby_lsp/ruby_lsp_rails/runner_client.rb:94:in `rescue in initialize'
/Users/steven/.asdf/installs/ruby/3.2.5/lib/ruby/gems/3.2.0/gems/ruby-lsp-rails-0.3.11/lib/ruby_lsp/ruby_lsp_rails/runner_client.rb:43:in `initialize'
/Users/steven/.asdf/installs/ruby/3.2.5/lib/ruby/gems/3.2.0/gems/sorbet-runtime-0.5.11422/lib/types/private/methods/_methods.rb:279:in `bind_call'
/Users/steven/.asdf/installs/ruby/3.2.5/lib/ruby/gems/3.2.0/gems/sorbet-runtime-0.5.11422/lib/types/private/methods/_methods.rb:279:in `block in _on_method_added'
/Users/steven/.asdf/installs/ruby/3.2.5/lib/ruby/gems/3.2.0/gems/ruby-lsp-rails-0.3.11/lib/ruby_lsp/ruby_lsp_rails/runner_client.rb:16:in `new'
/Users/steven/.asdf/installs/ruby/3.2.5/lib/ruby/gems/3.2.0/gems/ruby-lsp-rails-0.3.11/lib/ruby_lsp/ruby_lsp_rails/runner_client.rb:16:in `create_client'
/Users/steven/.asdf/installs/ruby/3.2.5/lib/ruby/gems/3.2.0/gems/sorbet-runtime-0.5.11422/lib/types/private/methods/_methods.rb:279:in `bind_call'
/Users/steven/.asdf/installs/ruby/3.2.5/lib/ruby/gems/3.2.0/gems/sorbet-runtime-0.5.11422/lib/types/private/methods/_methods.rb:279:in `block in _on_method_added'
/Users/steven/.asdf/installs/ruby/3.2.5/lib/ruby/gems/3.2.0/gems/ruby-lsp-rails-0.3.11/lib/ruby_lsp/ruby_lsp_rails/addon.rb:36:in `block in activate'
Server dependent features will not be available

Any ideas on why or what I could do to fix it?

[vinistock]

Thank you for the bug report! The backtrace seems to be incomplete for whatever reason, so it's hard to tell what's going on without the error message.

I do see that you're on v0.3.11 of ruby-lsp-rails, which is not the latest. Can you please try upgrading? Alternatively, do you see the error message printed anywhere?

[reppiee]

Yeah the incompleteness is also what's throwing me off - I have no idea where to look for the problem.

I've tried updating to the latest, but still getting the same error:

2024-09-18 13:31:30.557 [info] (core) Finished initializing Ruby LSP!
2024-09-18 13:31:30.585 [info] (core) Activating Ruby LSP Rails addon v0.3.15

2024-09-18 13:31:30.591 [info] (core) Ruby LSP Rails booting server

2024-09-18 13:31:31.654 [info] (core) Ruby LSP Rails is retrying initialize (1)
Ruby LSP Rails failed to initialize server: 
/Users/steven/.asdf/installs/ruby/3.2.5/lib/ruby/gems/3.2.0/gems/ruby-lsp-rails-0.3.15/lib/ruby_lsp/ruby_lsp_rails/runner_client.rb:96:in `rescue in initialize'
/Users/steven/.asdf/installs/ruby/3.2.5/lib/ruby/gems/3.2.0/gems/ruby-lsp-rails-0.3.15/lib/ruby_lsp/ruby_lsp_rails/runner_client.rb:43:in `initialize'
/Users/steven/.asdf/installs/ruby/3.2.5/lib/ruby/gems/3.2.0/gems/sorbet-runtime-0.5.11422/lib/types/private/methods/_methods.rb:279:in `bind_call'
/Users/steven/.asdf/installs/ruby/3.2.5/lib/ruby/gems/3.2.0/gems/sorbet-runtime-0.5.11422/lib/types/private/methods/_methods.rb:279:in `block in _on_method_added'
/Users/steven/.asdf/installs/ruby/3.2.5/lib/ruby/gems/3.2.0/gems/ruby-lsp-rails-0.3.15/lib/ruby_lsp/ruby_lsp_rails/runner_client.rb:16:in `new'
/Users/steven/.asdf/installs/ruby/3.2.5/lib/ruby/gems/3.2.0/gems/ruby-lsp-rails-0.3.15/lib/ruby_lsp/ruby_lsp_rails/runner_client.rb:16:in `create_client'
/Users/steven/.asdf/installs/ruby/3.2.5/lib/ruby/gems/3.2.0/gems/sorbet-runtime-0.5.11422/lib/types/private/methods/_methods.rb:279:in `bind_call'
/Users/steven/.asdf/installs/ruby/3.2.5/lib/ruby/gems/3.2.0/gems/sorbet-runtime-0.5.11422/lib/types/private/methods/_methods.rb:279:in `block in _on_method_added'
/Users/steven/.asdf/installs/ruby/3.2.5/lib/ruby/gems/3.2.0/gems/ruby-lsp-rails-0.3.15/lib/ruby_lsp/ruby_lsp_rails/addon.rb:41:in `block in activate'
Server dependent features will not be available

[vinistock]

Yeah, it's really hard to tell without the full trace (and I'm not sure why it's only printed the partial trace).

If you have time, trying to launch the runtime server manually might help us figure out what's wrong. Essentially, you just need to execute the server with rails runner, which should hopefully break in the same way and print the full trace:

1. Figure out the full path to the server.rb file for your ruby-lsp-rails installation: BUNDLE_GEMFILE=.ruby-lsp/Gemfile bundle show ruby-lsp-rails (prints the path to the gem installation)
2. After you have the path to the gem root, you are looking for this file
3. With the full path in hand, spawn the server using Rails runner. This is what we do in the addon

bin/rails runner /path/to/gems/ruby-lsp-rails-0.3.15/lib/ruby_lsp/ruby_lsp_rails/server.rb start

[reppiee]

Hi, sorry it took a while to get back to this!

I've tried your suggestions:

1. Locating the full path

❯ BUNDLE_GEMFILE=.ruby-lsp/Gemfile bundle show ruby-lsp-rails
/Users/steven/.asdf/installs/ruby/3.2.5/lib/ruby/gems/3.2.0/gems/ruby-lsp-rails-0.3.15

2. Use rails runner

❯ bin/rails runner "/Users/steven/.asdf/installs/ruby/3.2.5/lib/ruby/gems/3.2.0/gems/ruby-lsp-rails-0.3.15" start
Please specify a valid ruby command or the path of a script to run.
Run 'rails runner -h' for help.

/usr/local/bundle/gems/railties-6.1.7.8/lib/rails/commands/runner/runner_command.rb:45: unknown regexp options - tv
/Users/steven/.asdf/installs/ruby/3.2.5/li...
      ^~~~~~~
/usr/local/bundle/gems/railties-6.1.7.8/lib/rails/commands/runner/runner_command.rb:45: syntax error, unexpected '.'
/Users/steven/.asdf/installs/ruby/3.2.5/lib/...
              ^

Probably doing something wrong, since I don't expect that to be the actual error. Posting here just in case it does explain something - but will revisit next week to try and actually run it to get logging/stacktrace of error.

[vinistock]

You need to specify the path to the server.rb file, so it's almost there. It should be

bin/rails runner "/Users/steven/.asdf/installs/ruby/3.2.5/lib/ruby/gems/3.2.0/gems/ruby-lsp-rails-0.3.15/lib/ruby_lsp/ruby_lsp_rails/server.rb" start

[reppiee]

Sorry for not coming back to this - a colleague of mine went down the rabbithole and figured out that it was not starting properly due to customised rails bin stubs that we use.

Apologies and thanks for the help!