title: ghci not loading function from file
body: <p>In test.hs, I have:</p>
  
  <pre><code>doubleMe x = x + x
  </code></pre>
  
  <p>In ghci, I type:</p>
  
  <pre><code>Prelude&gt; :l test
  [1 of 1] Compiling Main             ( test.hs, interpreted )
  Ok, modules loaded: Main.
  *Main&gt; doubleMe 9
  
  &lt;interactive&gt;:1:0: Not in scope: `doubleMe'
  *Main&gt; 
  </code></pre>
  
  <p>Why? How to fix?</p>