Claude Code on Claude Desktop?

[jrochkind]

I am late to LLM-written code, but experimenting with it.

I am using Claude Desktop.

I have not managed to figure out how to get it to use my current chruby ruby (based on .ruby-version) when executing code. It has been very challenging, is it not possible? Maybe possible with Claude CLI, but Desktop is more limited in it's flexibility this way? (I am very new to all of this and have no idea what I'm talking about, this may not make any sense).

Has anyone figured out how to get Claude Desktop Code to use chruby when it executes ruby? It seems like maybe it wants rbenv by "default". i love chruby and have no desire to switch... but new environments new requirements. Any thought to figuring out and documetning how to get chruby to work in this situation?

[havenwood]

One threshold thing is likely ensuring chruby sources in an noninteractive shell. Like in Zsh, adding source lines for chruby.sh and auto.sh to ~/.zshenv rather than ~/.zshrc.

For a specific Ruby target, chruby-exec is tempting.

chruby-exec ruby-4.0 -- bundle exec rake

For .ruby-version auto-switching I'm less sure which option is best.

You could point chruby-exec at the .ruby-version file.

chruby-exec $(cat .ruby-version) -- bundle exec rake

Or auto.sh's chruby_auto, which I kinda hesitate to suggest since it isn't really part of the public interface, but I'd expect it to work well and not be going anywhere.

chruby_auto && bundle exec rake

[havenwood]

What did you do to "set up non-interactive sourcing"?

I sourced chruby in ~/.zshenv to make sure it gets sourced, however Zsh is run. FWIW, rbenv has a nice shell init wiki that covers some popular shells: https://github.com/rbenv/rbenv/wiki/Unix-shell-initialization

[jrochkind]

I cannot get ~/.zshenv to take effect in my Claude Desktop code tab chats (NOT in the terminal).

However, I want to run a local ruby -e "puts 'hi'" with chruby, can you do that? -- DID work! even in Sonnet 4.6.

So the next step is jsut getting claude to do that all the time when i ask it to say run specs -- it was refusing to do that before.

Perhaps I need to put something in my CLAUDE.md, rather than try an actual "config". I will try that -- perhaps try asking Claude the best way to do that.

Thanks for helping me work through this, @havenwood, really appreciate it. When I have something definitely working, I'll report back. (May also report. back with new roadblocks).

[jrochkind]

Oh man, i spoke too soon it's not quite doing what yours was doing, but its' close.

[jrochkind]

OK, I put this in my CLAUDE.md (exact wording suggested by claude, 🤷 ), which seems to work.

## Running Ruby commands

Prefix all Ruby-related shell commands (`ruby`, `bundle`, `./bin/rspec`, `rake`, etc.) with `chruby-exec $(cat .ruby-version) --` so the correct Ruby version is used via chruby auto-detection.

Example:
\```
chruby-exec $(cat .ruby-version) -- ./bin/rspec spec/foo_spec.rb
\```

[jrochkind]

Sorry I'm not sure I'm following what you are talking about, I'm not sure it's the same thing I opened this discussion for? Whats' the reason you are suspecting it has something to do with chruby?

[jrochkind]

Here is what I ended up with, it seems to be working out very well for me, but I am just getting started with Claude Code (and LLM-written code) in general (have been writing ruby/rails for literally decades).

sciencehistory/scihist_digicoll#3505

Handles getting claude code to execute with chruby-exec, and also with a wrapper for rspec specifically, so I can exempt it from sandbox and permissions.

No problems I am aware of with "lagging and losing track of files", not sure why one would be concerned about that or what that looks like, but I'm new to this.

[jrochkind]

This is a post in a discussion forum for the chruby ruby version switcher tool, I don't believe your comment has anything to do with the topic.