title: Int List To Integer List
body: <p>How do I convert an <code>Int</code> list to an <code>Integer</code> list?</p>
  
  <p>I've only found solutions that work for one <code>Int</code>.</p>
  
  <p>I'm getting this error</p>
  
  <pre><code>Couldn't match type `Int' with `Integer'
  Expected type: [Integer]
    Actual type: [Int]
  </code></pre>
  
  <p>when forcing</p>
  
  <pre><code>:: [Integer] -&gt; Integer
  </code></pre>
  
  <p>and</p>
  
  <pre><code>Couldn't match expected type `Integer' with actual type `Int'
  </code></pre>
  
  <p>when forcing</p>
  
  <pre><code>:: [Int] -&gt; Int
  </code></pre>