final: prev:

let
  disablePyChecks = pkg: pkg.overridePythonAttrs (old: {
    doCheck = false;
    doInstallCheck = false;
    dontCheck = true;
  });
in {
  pythonPackagesExtensions = prev.pythonPackagesExtensions ++ [
    (pyfinal: pyprev: {
      dnspython = (disablePyChecks pyprev.dnspython).overridePythonAttrs (old: {
        disabledTests = [
          "test_resolver"  # Relying too much on internet connection, Indonesian internet couldn't cope with it
        ] ++ old.disabledTests;
      });
      pillow = disablePyChecks pyprev.pillow;  # Inconsistent test result
      cherrypy = disablePyChecks pyprev.cherrypy;  # Inconsistent test result
    })
  ];
}