title: cygwincompiler TypeError: '>=' not supported between instances of 'NoneType' and 'str'
body: <pre><code>File &quot;C:\ProgramData\Anaconda3\lib\site-packages\numpy\distutils\mingw
    dry_run, force)
  File &quot;C:\ProgramData\Anaconda3\lib\distutils\cygwinccompiler.py&quot;, line
    if self.ld_version &gt;= &quot;2.10.90&quot;:
  TypeError: '&gt;=' not supported between instances of 'NoneType' and 'str'
  </code></pre>
  <p>Facing this error for a long time in my Python environment, I don't know if it's due to cygwin or not.</p>