title: Error installing etetoolkit. When installing using anaconda
body: <p>I followed the <a href="http://etetoolkit.org/download/" rel="nofollow noreferrer">directions</a> to install etetoolkit for mac.</p>
  
  <pre><code># Install Minconda  (you can ignore this step if you already have Anaconda/Miniconda)
  curl -L 'http://repo.continuum.io/miniconda/Miniconda3-latest-MacOSX-x86_64.sh' -o Miniconda3-latest-MacOSX-x86_64.sh
  bash Miniconda3-latest-MacOSX-x86_64.sh -b -p ~/anaconda_ete/
  export PATH=~/anaconda_ete/bin:$PATH;
  
  # Install ETE and external tools 
  conda install -c etetoolkit ete3 ete_toolchain
  
  # Check installation
  ete3 build check
  </code></pre>
  
  <p>I get an error when I run <code>conda install -c etetoolkit ete3 ete_toolchain</code> </p>
  
  <p>Error:</p>
  
  <blockquote>
    <p>UnsatisfiableError: The following specifications were found to be
    incompatible with the existing python installation in your
    environment:</p>
    
    <ul>
    <li>ete3 -> python[version='>=2.7,&lt;2.8.0a0,>=3.5,&lt;3.6.0a0,>=3.6,&lt;3.7.0a0']</li>
    <li>ete_toolchain -> python[version='>=2.7,&lt;2.8.0a0,>=3.5,&lt;3.6.0a0,>=3.6,&lt;3.7.0a0'</li>
    </ul>
  </blockquote>