title: How can I use a system environment variable inside a pyramid ini file?
body: <p>I exported a variable called <code>DBURL='postgresql://string'</code>and I want to use it in my configuration ini file, e.g::</p>
  
  <pre><code>[app:kotti]
  sqlalchemy.url = %(DBURL)s
  </code></pre>
  
  <p>That's not working.</p>