When I try to run devel server of my yesod powered site i get:<br><br>Could not find module `<a href="http://Database.Persist.TH">Database.Persist.TH</a>&#39;:<br>  It is a member of the hidden package `persistent-0.4.2&#39;.<br>
  It is a member of the hidden package `persistent-0.3.1.3&#39;.<br>  Use -v to see a list of the files searched for.<br><br>What should I do to expose persistent module ?<br>