pip install --upgrade pip
pip install --upgrade --no-binary pycparser pycparser
-pip install --upgrade docker-py importlib requests scapy netifaces netaddr ipaddr simplejson demjson
-pip install --upgrade robotframework{,-{httplibrary,requests,sshlibrary,selenium2library}}
+pip install --upgrade pyOpenSSL==16.2.0 docker-py importlib requests scapy netifaces netaddr ipaddr simplejson demjson
+pip install --upgrade robotframework{,-{httplibrary,requests,sshlibrary,selenium2library,xvfb}}
+
+pip install xvfbwrapper
+pip install PyVirtualDisplay
# Print installed versions.
pip freeze