title: Unable to install PyQt5 on Raspberry Pi
body: <p>I am trying to install PyQt5 on my Raspberry Pi machine.</p>
  <p>I have tried:</p>
  <pre><code>pip3 install pyqt5
  
  pip3 install --upgrade pip
  pip3 install pyqt5==5.14.0
  
  sudo apt-get update 
  sudo apt-get install python3-pyqt5
  </code></pre>
  <p>they all give me the error:</p>
  <pre><code>  Using cached PyQt5-5.14.0.tar.gz (3.2 MB)
  ERROR: pyqt5==5.14 from https://files.pythonhosted.org/packages/7c/5b/e760ec4f868cb77cee45b4554bf15d3fe6972176e89c4e3faac941213694/PyQt5-5.14.0.tar.gz#sha256=0145a6b7de15756366decb736c349a0cb510d706c83fda5b8cd9e0557bc1da72 has a pyproject.toml file that does not comply with PEP 518: 'build-system.requires' contains an invalid requirement: 'sip &gt;=5.0.1 &lt;6'
  </code></pre>