Could not find 'ruby-debug-ide' in VS Code

Question

I am trying to use VS Code for debugging a Ruby on Rails application. I have installed both the Ruby and Rubocop extension into VS Code. Then I have installed ruby-debug-ide -v 0.6.0 and debase -v 0.2.1 both via sudo gem install and rvmsudo gem install. However, when trying to debug the application using Rails server, I get the following exception:

/usr/lib/ruby/2.3.0/rubygems/dependency.rb:319:in `to_specs'
: 
Could not find 'ruby-debug-ide' (>= 0.a) among 48 total gem(s)
 (
Gem::LoadError
)
Checked in 'GEM_PATH=/home/myname/.rvm/gems/ruby-2.3.1:/home/myname/.rvm/gems/ruby-2.3.1@global', execute `gem env` for more information
    from /usr/lib/ruby/2.3.0/rubygems/dependency.rb:328:in `to_spec'
    from /usr/lib/ruby/2.3.0/rubygems/core_ext/kernel_gem.rb:65:in `gem'
    from /usr/local/bin/rdebug-ide:22:in `<main>'

However, when I list all installed gems with rvm all do gem list, neither of the installed gems are there:

*** LOCAL GEMS ***

...
concurrent-ruby (1.0.2)
did_you_mean (1.0.0)
erubis (2.7.0)
...
rdoc (4.2.1)
rubygems-bundler (1.4.4)
rvm (1.11.3.9)
...

Does anybody know how to fix this?

Answer 1

In my case, the solution was quite simple. As a newbie in Ruby on Rails, I did not realize that instead of installing gems into Ruby root, I should specify them in my Gemfile. So, inside Gemfile I put only:

group :development do
  gem 'ruby-debug-ide', '0.6.0'
  gem 'debase', '0.2.1'
  gem 'web-console', '~> 2.0'
  gem 'spring'
end

and this solved the issue for me.