vscode-rdbg: On Mac Os, Unable to use my installed ruby, vs code always picks the system one

On Mac OS I have installed ruby 3.0.2 When I run in my shell and run which ruby I get 3.0.2 and when I run ruby --version I getruby 3.0.2p107 (2021-07-07) [arm64-darwin20]

I launch vs code via the code command line from this shell. If I go into Vs terminal and type the above commands I get the same output.

When I try to debug a .rb file I do not see the debug dialog and instead VS code tries to run the system installed ruby version (2.6.0) and fails:

/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/rubygems/dependency.rb:313:in `to_specs': Could not find 'io-console' (~> 0.5) - did find: [io-console-0.4.7] (Gem::MissingSpecVersionError)
Checked in 'GEM_PATH=/Users/me/work/gems', execute `gem env` for more information
	from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/rubygems/specification.rb:1449:in `block in activate_dependencies'
	from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/rubygems/specification.rb:1438:in `each'
	from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/rubygems/specification.

I also did try making a launch file and explicitly setting ‘askParameters’: true but I still never get the debug dialog, just this output.

About this issue

Original URL
State: closed
Created 3 years ago
Reactions: 2
Comments: 19

Most upvoted comments

I also had a recent regression where VSCode rdbg couldn’t find the correct Ruby (also on macOS Monterey, using rbenv). I solved it by specifying the path to rdbg specifically with rdbgPath:

{ // Name: VSCode rdbg Ruby Debugger https://marketplace.visualstudio.com/items?itemName=KoichiSasada.vscode-rdbg
	"type": "rdbg",
	"name": "Attach with Ruby Debug rdbg",
	"request": "attach",
	"rdbgPath": "~/.rbenv/shims/rdbg"
}

and yes, this extension is totally wonderful, thank you!!!

iandol on Nov 18, 2021

I ran into the same issue and got it working. When using zsh, it appears that .zshrc file is not directly loaded in login shells (more on that here). I debugged the initialisation process of the debugger extension, and the error comes from: https://github.com/ruby/vscode-rdbg/blob/9d445b9804e7c2084e7524ae9ae76e5787a4c2b1/src/extension.ts#L332

In that particular point, the command /bin/zsh -l -c 'bundle exec rdbg --util=gen-sockpath' is being executed and it fails showing an error that reports the usage of system Ruby installation.

So I tried running a simple /bin/zsh -l -c 'which bundle' and the result was /usr/bin/bundle, which is not what I was expecting for. Adding a -d (--no-globalrcs) would have solved, but it would require extension changes.

As a consequence $PATH in that shell doesn’t properly contain rbenv shims (checkable with /bin/zsh -l -c 'echo $PATH').

The solution for me was adding eval "$(rbenv init -)" to the .zprofile file. As an alternative, adding export PATH="$HOME/.rbenv/bin:$PATH" works as well.

arizz96 on Sep 16, 2022

Re-reading https://github.com/ruby/vscode-rdbg/issues/13#issuecomment-1249316284 (and man) I understand that

~/.zshrc is only loaded for interactive shell
zsh -l -c ... doesn’t load ~/.zshrc but VSCode extension needs to load it. Because zsh -l doesn’t run interactive shell.
https://github.com/rbenv/rbenv writes that >> ~/.zshrc.

I think zprofile seems better place to put configuration as @arizz96 had wrote.

ko1 on Oct 24, 2022