Zuul depends on python-gear 0.5.5 which I have packaged. It has been made available for precise-wikimedia but I could now use it on both trusty-wikimedia and jessie-wikimedia
Sid page: https://packages.debian.org/source/sid/python-gear has 0.5.4. 0.5.5 upload to Debian project is T89952.
The source package is hosted in Debian git repo:
View: https://anonscm.debian.org/cgit/python-modules/packages/python-gear.git
Git: git://anonscm.debian.org/python-modules/packages/python-gear.git
Git ssh: ssh://git.debian.org/git/python-modules/packages/python-gear.git