title: Is there some directory walker in Haskell?
body: <p>Is there some recursive directory walker in Haskell so I could write something like</p>
  
  <pre><code>listing &lt;- walkDir "/tmp"
  </code></pre>
  
  <p>I would not like to write my own. I can install some dependency from cabal but I want it to be cross platform (at least Linux and Windows).</p>