title: Building wheel for lxml (setup.py) friezes while installing lxml on termux
body: <p>I was trying to install lxml on python 3.7.4 on Termux on my phone:</p>
  
  <pre><code>$ pip install lxml
  Collecting lxml
    Using cached https://files.pythonhosted.org/packages/c4/43/3f1e7d742e2a7925be180b6af5e0f67d38de2f37560365ac1a0b9a04c015/lxml-4.4.1.tar.gz
  Building wheels for collected packages: lxml
    Building wheel for lxml (setup.py) ... - 
  </code></pre>
  
  <p>But the process has taken hours and it seemed like it froze. </p>
  
  <p>I already have <code>libxml2, libxslt, libiconv, clang</code> packages installed
  and also <code>pip wheel</code></p>
  
  <p>Can it be that this depends on my RAM and if so, what can I do about it? </p>
  
  <p>Please help me out guys:p</p>