ironic-api and pecan 1.0.2/1.0.3/1.0.4 are incompatible

[Vasyl Saienko]

Installing pecan 1.0.2/1.0.3/1.0.4 and launching ironic-api service (both master/newton and stable/mitaka) leads to the following traceback with any API call (for example ironic node-list)

http://paste.openstack.org/show/562208/

pip list |grep pecan
pecan (1.0.2)
sphinxcontrib-pecanwsme (0.8.0)

pecan 1.0.5 works just fine.

[Pavlo Shchelokovskyy (pshchelo)]

By simple experiment on DevStack master I've found that earliest Pecan version that does not exhibit this bug is 1.0.5.

Seems we need to bump the global requirements

[Pavlo Shchelokovskyy (pshchelo)]

Correction - 1.0.0 (lowest version from global requirements) and 1.0.1 do work.
Faulty versions are 1.0.2, 1.0.3, 1.0.4

[Dmitry Tantsur (divius)]

You're right, it was a bug in pecan back then. As it was fixed, I don't think we can do anything on Ironic side (keep in mind that requirements are not bumped for bug fixes, only for features).

[Pavlo Shchelokovskyy (pshchelo)]

Dmitry, why not just block the faulty versions in requirements then? !=1.0.2,... especially if it is a known problem. Otherwise OpenStack packagers have no knowledge that these particular versions can not in fact be used.