title: Running setup.py install for scikit-learn ... error
body: <p>I am using MacOs Mojave and currently trying to run the project available on GitHub on <a href="https://github.com/aasis21/4th_umpire" rel="nofollow noreferrer">this</a> link. I have installed latest version of python(i.e. python 3.8) and currently facing issues while installing the requirements, mainly in scikit-learn. Either way I am getting the same error.</p>
  
  <p>Kindly help me through out to run this project completely on my machine locally.</p>
  
  <p><a href="https://i.stack.imgur.com/U24op.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/U24op.png" alt="enter image description here"></a></p>
  
  <p>I've also raised an issue on the main GitHub page regarding this and still waiting for an adequate response.</p>
  
  <p>When I tried to install cython according to the given instructions and available answer on stackoverflow I'm getting another big error page with python3.8 using command- pip3 install --upgrade cython       as mentioned in an answer. I'm attaching that's error messages here.
  <a href="https://i.stack.imgur.com/4AUFv.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/4AUFv.png" alt="enter image description here"></a>
  <a href="https://i.stack.imgur.com/0O34z.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/0O34z.png" alt="enter image description here"></a>
  <a href="https://i.stack.imgur.com/SiXgf.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/SiXgf.png" alt="enter image description here"></a>
  <a href="https://i.stack.imgur.com/1B317.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/1B317.png" alt="enter image description here"></a>
  <a href="https://i.stack.imgur.com/FYx4I.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/FYx4I.png" alt="enter image description here"></a>
  <a href="https://i.stack.imgur.com/eAbD6.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/eAbD6.png" alt="enter image description here"></a>
  This is the complete set of error that I'm getting after that.
  Thanks in advance if anyone can get me through this project with python3.8</p>
  
  <p>Thanks VonC for resolving the installation of cython. Now another error that I'm getting while installing scikit-learn with python3.8 in my system is:
  <a href="https://i.stack.imgur.com/K2SYM.png" rel="nofollow noreferrer">scikit-learn installation error with python3.8</a>
  As answered by @VonC, I did tried to follow link<a href="https://scikit-learn.org/dev/developers/advanced_installation.html#compiler-macos" rel="nofollow noreferrer">enter link description here</a> and now while executing the command <strong>pip install --verbose --editable .</strong> I'm now getting <a href="https://i.stack.imgur.com/hgqwr.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/hgqwr.png" alt="another error here"></a>
  Please help me regarding this. I've installed LLVM OpenMP library using Homebrew </p>