 class="command-line" data-user="rwo" data-host="lama"><code class="language-bash">
    opam switch create 4.13.1
    eval $(opam env)
</code></pre>

<p>The <code>opam switch create</code> will take a few minutes on a
  modern machine, and will download and install the new compiler and
  all libraries associated with it. The second line is required to
  point your current shell to the new switch.</p>

<h2 id="libraries-and-tools">Installing libraries and tools</h2>

<h3>Install via opam</h3>

<p>You'll need