==> Retrieving sources...
  -> Downloading PyVirtualDisplay-3.0.tar.gz...
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed

  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0curl: (6) Could not resolve host: files.pythonhosted.org
Warning: Problem : timeout. Will retry in 3 seconds. 3 retries left.

  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0curl: (6) Could not resolve host: files.pythonhosted.org
Warning: Problem : timeout. Will retry in 3 seconds. 2 retries left.