<div class="gmail_extra">The line:<br><font color="#333333"><font><font face="trebuchet ms,sans-serif">> cabal: The program c2hs is required but it could not be found.</font></font></font><br>is pretty clear about the source of error. You have to install c2hs first and make sure its in PATH. Use either some packaged version of c2hs or "cabal install c2hs".<br>
<br>Best regards,<br>Krzysztof Skrzętnicki<br><br><div class="gmail_quote">On Thu, Dec 6, 2012 at 11:48 AM, Trung Quang Nguyen <span dir="ltr"><<a href="mailto:trungnq97@gmail.com" target="_blank">trungnq97@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">The program c2hs is required but it could not be found.</blockquote></div><br></div>