title: Cannot install pyarrow from pip or conda
body: <p>I am relatively new to package management and have hit a roadblock getting <code>pyarrow</code> to install in my Windows x64 machine.  Pyarrow docs say to use either</p>
  <pre><code>conda install -c conda-forge pyarrow
  </code></pre>
  <p>or</p>
  <pre><code>pip install pyarrow
  </code></pre>
  <p><a href="https://arrow.apache.org/docs/python/install.html" rel="nofollow noreferrer">https://arrow.apache.org/docs/python/install.html</a></p>
  <p>conda command gives</p>
  <pre><code>PackagesNotFoundError: The following packages are not available from current channels:
  </code></pre>
  <p>pip command gives a very lengthy error dump under the heading</p>
  <pre><code>Installing build dependencies ... error
  ERROR: Command errored out with exit status 1:
  </code></pre>
  <ul>
  <li>I tried both in a Python 3.7.9 and a Python 3.8.5 conda environment
  since there is Github Jira discussion about this mattering at least
  historically (<a href="https://issues.apache.org/jira/browse/ARROW-7076" rel="nofollow noreferrer">https://issues.apache.org/jira/browse/ARROW-7076</a>)</li>
  <li>On the conda approach, I [successfully] added <a href="https://conda.anaconda.org/conda-forge/win-64" rel="nofollow noreferrer">https://conda.anaconda.org/conda-forge/win-64</a> to current channels, but still 'Package not found' for <code>pyarrow</code>. I did this out of confusion that my list of channels appearing to be 32-bit specific, and my machine is 64-bit</li>
  <li>There is ample evidence of pyarrow (2.0.0) presence in <code>Conda-forge/win-64</code></li>
  </ul>
  <p>Thanks for help in getting this package installed successfully.</p>
  <p>This is the list of my current channels (with the 'win-64' one having been manually added) in the Conda 'Package not found' message</p>
  <pre><code>Current channels:
  
    - https://conda.anaconda.org/conda-forge/win-32
    - https://conda.anaconda.org/conda-forge/noarch
    - https://repo.anaconda.com/pkgs/main/win-32
    - https://repo.anaconda.com/pkgs/main/noarch
    - https://repo.anaconda.com/pkgs/r/win-32
    - https://repo.anaconda.com/pkgs/r/noarch
    - https://repo.anaconda.com/pkgs/msys2/win-32
    - https://repo.anaconda.com/pkgs/msys2/noarch
    - https://conda.anaconda.org/conda-forge/win-64
  </code></pre>