shotgun gem bug 'cannot load such file -- thin'

Question

I'm using shotgun to serve my Sinatra project on Ubuntu development machine. And when I'm starting shotgun with -d (debug), it returns me

Exception `LoadError' at /home/askhat/.rvm/rubies/ruby-2.1.3/lib/ruby/2.1.0/rubygems/core_ext/kernel_require.rb:55 - cannot load such file -- thin
Exception `LoadError' at /home/askhat/.rvm/rubies/ruby-2.1.3/lib/ruby/2.1.0/resolv.rb:169 - LoadError

But thin gem is installed. Actually shotgun works properly with this error. There is no problem, just interesting why it's appends?

Answer 1

do you have a Gemfile in your app? usually it should be enough to add thin to Gemfile as RVM uses rubygems-bundler gem which automatically assumes bundle exec context for binaries that are installed from gems via Gemfile.