root@VPS:~/sandbox/gateone# dpkg -i gateone*.deb
Selecting previously deselected package gateone.
(Reading database ... 34893 files and directories currently installed.)
Unpacking gateone (from gateone_1.0-2_all.deb) ...
dpkg: dependency problems prevent configuration of gateone:
 gateone depends on python-tornado (>= 2.2); however:
  Version of python-tornado on system is 1.0.1-1.
dpkg: error processing gateone (--install):
 dependency problems - leaving unconfigured
Errors were encountered while processing:
 gateone
root@VPS:~/sandbox/gateone# python -c "import tornado; print(tornado.version)"
2.4
root@VPS:~/sandbox/gateone#