title: Anaconda - UnsatisfiableError: The following specifications were found to be in conflict
body: <p>When I was trying to install a module 'pymc' through anaconda environments, it showed the error message as follows:</p>
  <blockquote>
  <p>UnsatisfiableError: The following specifications were found to be in
  conflict:</p>
  <ul>
  <li><p>blaze -&gt; pyyaml -&gt; python[version='&gt;=2.7,&lt;2.8.0a0'] -&gt; vc=9</p>
  </li>
  <li><p>blaze -&gt; pyyaml -&gt; yaml -&gt; *[track_features=vc9]</p>
  </li>
  <li><p>pymc Use &quot;conda info &quot; to see the dependencies for each package.</p>
  </li>
  </ul>
  </blockquote>
  <p>I am using Python 2.7.14, and I installed anaconda 1.6.9 on a Windows. I am new to Python. I first tried to use cmd to install the module pymc and I ran into a lot of problems such as the requirement for install g77 compiler on windows. After I got the compiler from MinGW and also installed the Microsoft Visual C++ Compiler for Python, I still cannot install the module because there came new errors. That is when I found there is pymc module listed in anaconda environment that I can add manually, but it showed this conflict error.</p>
  <p>I do not know whether the conflict comes from all those other stuff I installed above or not. Please HELP! Thanks!</p>