Issue with Capistrano calling shell script that depends on Ruby

[Aupajo]

Chruby works great, but I'm having an issue when trying to use Ruby in a shell script that Capistrano calls:

#!/usr/bin/env sh
# ...snip...
ruby --something
# ...snip...

It runs in a Capistrano task like this:

task :that_calls_shell_script do
    on roles(:app) do
      within release_path do
          execute "path/to/shell/script"
      end
    end
  end

The problem is, if I understand correctly, that Capistrano Chruby only seems to call Chruby through chruby-exec, which is nice and self-contained, but a problem when you need the Chruby environment there for other purposes.

Is there some kind of workaround?

[Aupajo]

Possibly one way of addressing this would be to expose chruby_prefix (as defined in the map_bins task). I could then run something like:

execute :chruby_prefix, "path/to/shell/script"

Or even if it was available to fetch, at a pinch:

execute "#{fetch(:chruby_prefix} path/to/shell/script"

[Aupajo]

Yep, this works nicely! Now I can run:

execute :chruby_prefix, "path/to/shell/script"

[kirs]

Thanks!

[Aupajo]

Thanks for merging! Any chance of a gem release? :)

[kirs]

Done!

[Aupajo]

🎉