title: Ruby on Rails error "cannot load such file -- less"
body: <p>I am fairly new to <code>ruby on rails</code>, I have been trying to use <code>twitter-bootstrap</code> as an asset, so I have included it in my Gemfile, bundled and it installs successfully. However I have noticed that it relies on certain dependencies that are not shown when I do the "bundle" command.</p>
  
  <p>The dependences it needs</p>
  
  <pre><code>(1) Libv8
  (2) Less
  (3) Less-rails
  </code></pre>
  
  <p>Error message:</p>
  
  <pre><code>cannot load such file -- less
    (in c:/Sites/todo/app/assets/stylesheets/bootstrap_and_overrides.css.less)
  
  [code]
  
  Extracted source (around line #8):
  
  5:   &lt;!--[if lt IE 9]&gt;
  6:     &lt;script src="http://html5shim.googlecode.com/svn/trunk/html5.js"     type="text/javascript"&gt;&lt;/script&gt;
  7:   &lt;![endif]--&gt;
  8:   &lt;%= stylesheet_link_tag    "application", :media =&gt; "all" %&gt;
  9:   &lt;%= javascript_include_tag "application" %&gt;
  10:   &lt;%= csrf_meta_tags %&gt;
  11:   &lt;meta name="viewport" content="width=device-width, initial-scale=1.0"&gt;
  
  [/code]
  
  Trace
  app/views/layouts/application.html.erb:8:in     `_app_views_layouts_application_html_erb__560528188_27183396'
  app/controllers/lists_controller.rb:7:in `index'
  </code></pre>
  
  <p>I have noticed a lot of answers to this very question already, and have chosen the obvious solutions, but somehow I still get stuck, and would really appreciate some guidance.</p>