title: conda: "specifications were found to be in conflict"; package install fails
body: <p>I was using conda to install a package called stomel (conda install stomel). I did add the correct channel to .condarc. </p>
  
  <p>The error showed that The following specifications were found to be in conflict:</p>
  
  <ul>
  <li>stomel</li>
  </ul>
  
  <p>I know this kind of error would be normal when using conda to install package. But should there be two or more packages that are in conflict? Besides, I never install stomel before. </p>
  
  <p>I would really appreciate any answers. Thank you in advance. Attached are the error message.</p>
  
  <p><a href="http://i.stack.imgur.com/v0v7R.png" rel="nofollow">error message</a></p>