title: how to install conflicting packages?
body: <p>I have both <code>anaconda</code> for <code>python 2.7</code> and for <code>python 3</code> installed on my machine. </p>
  
  <p>I am trying to install <code>user-agents</code> (<a href="https://github.com/selwin/python-user-agents" rel="nofollow noreferrer">https://github.com/selwin/python-user-agents</a>) and I get the following error:</p>
  
  <pre><code>(base) C:\Users\john&gt;conda install user-agents
  Solving environment: failed
  
  UnsatisfiableError: The following specifications were found to be in conflict:
    - user-agents
    - zict
  Use "conda info &lt;package&gt;" to see the dependencies for each package.
  </code></pre>
  
  <p>I have looked at the FAQ <a href="https://conda.io/docs/user-guide/tasks/manage-python.html" rel="nofollow noreferrer">https://conda.io/docs/user-guide/tasks/manage-python.html</a> but I do not understand how to avoid this issue. Running the <code>-info</code> command on both packages shows </p>
  
  <pre><code>(base) C:\Users\john&gt;conda info user-agents
  
  user-agents 1.1.0 py27_0
  ------------------------
  file name   : user-agents-1.1.0-py27_0.tar.bz2
  name        : user-agents
  version     : 1.1.0
  build string: py27_0
  build number: 0
  channel     : https://conda.anaconda.org/conda-forge/win-64
  size        : 16 KB
  arch        : x86_64
  constrains  : ()
  license     : MIT
  license_family: MIT
  md5         : 98e6b4d286813445d0a2f222ca3f08fa
  platform    : win32
  subdir      : win-64
  url         : https://conda.anaconda.org/conda-forge/win-64/user-agents-1.1.0-py27_0.tar.bz2
  dependencies:
      python 2.7*
      ua-parser &gt;=0.4.1
  
  user-agents 1.0.1 py34_0
  ------------------------
  file name   : user-agents-1.0.1-py34_0.tar.bz2
  name        : user-agents
  version     : 1.0.1
  build string: py34_0
  build number: 0
  channel     : https://conda.anaconda.org/conda-forge/win-64
  size        : 12 KB
  arch        : x86_64
  constrains  : ()
  license     : MIT
  md5         : 960c836c6c8fd5e7a126c15b39be5d35
  platform    : win32
  subdir      : win-64
  url         : https://conda.anaconda.org/conda-forge/win-64/user-agents-1.0.1-py34_0.tar.bz2
  dependencies:
      python 3.4*
      ua-parser &gt;=0.4.1
  
  user-agents 1.0.1 py27_1
  ------------------------
  file name   : user-agents-1.0.1-py27_1.tar.bz2
  name        : user-agents
  version     : 1.0.1
  build string: py27_1
  build number: 1
  channel     : https://conda.anaconda.org/conda-forge/win-64
  size        : 13 KB
  arch        : x86_64
  constrains  : ()
  license     : MIT
  md5         : 9c829288911183766ddaa741f537b6ca
  platform    : win32
  subdir      : win-64
  url         : https://conda.anaconda.org/conda-forge/win-64/user-agents-1.0.1-py27_1.tar.bz2
  dependencies:
      python 2.7*
      ua-parser &gt;=0.4.1
  
  user-agents 1.0.1 py27_0
  ------------------------
  file name   : user-agents-1.0.1-py27_0.tar.bz2
  name        : user-agents
  version     : 1.0.1
  build string: py27_0
  build number: 0
  channel     : https://conda.anaconda.org/conda-forge/win-64
  size        : 12 KB
  arch        : x86_64
  constrains  : ()
  license     : MIT
  md5         : 5f8bff4eecc0921d8ff6637c5214a69d
  platform    : win32
  subdir      : win-64
  url         : https://conda.anaconda.org/conda-forge/win-64/user-agents-1.0.1-py27_0.tar.bz2
  dependencies:
      python 2.7*
      ua-parser &gt;=0.4.1
  
  user-agents 1.0.1 py34_1
  ------------------------
  file name   : user-agents-1.0.1-py34_1.tar.bz2
  name        : user-agents
  version     : 1.0.1
  build string: py34_1
  build number: 1
  channel     : https://conda.anaconda.org/conda-forge/win-64
  size        : 13 KB
  arch        : x86_64
  constrains  : ()
  license     : MIT
  md5         : 968c308d3f28527d010ab1ea7e08f043
  platform    : win32
  subdir      : win-64
  url         : https://conda.anaconda.org/conda-forge/win-64/user-agents-1.0.1-py34_1.tar.bz2
  dependencies:
      python 3.4*
      ua-parser &gt;=0.4.1
  </code></pre>
  
  <p>Can someone please tell me what is the correct <code>conda</code> command here?
  Thanks!</p>