grenades failing eventlet 0.13.0 is installed but eventlet>=0.15.2 is required by ['oslo.vmware']

[Adam Gandelman]

http://logs.openstack.org/29/136729/2/check/check-grenade-dsvm/3cbadc3/logs/grenade.sh.txt.gz#_2014-11-24_16_32_27_038

2014-11-24 16:32:27.038 | needed = self.resolve(parse_requirements(requirements))
2014-11-24 16:32:27.038 | File "/usr/local/lib/python2.7/dist-packages/pkg_resources.py", line 632, in resolve
2014-11-24 16:32:27.038 | raise VersionConflict(tmpl % args)
2014-11-24 16:32:27.038 | pkg_resources.VersionConflict: eventlet 0.13.0 is installed but eventlet>=0.15.2 is required by ['oslo.vmware']
2014-11-24 16:32:27.038 |

[Adam Gandelman (gandelman-a)]

This affects juno as well:

http://logs.openstack.org/73/135673/2/check/check-grenade-dsvm/23ba48c/logs/old/screen-s-proxy.txt.gz

[Adam Gandelman (gandelman-a)]

As explained on IRC:

.:fungi:. basically if you have package A already installed at version 1.2.3 and then feed pip a list of packages to install (directly or transitively) if the first dependency it sees listed on package A doesn't require newer than 1.2.3 then a later listed dependency on A>=2.3.4 will basically be ignored and won't trigger an upgrade

Issue here is ceilometer and glance both list oslo.vmware but their 'eventlet>=0.13.0' trumps oslo.vmware's 'eventlet>=0.15.1' when installed via pip. In the past, oslo.vmware was installed on its own by devstack via git checkout, but https://review.openstack.org/#/c/136335/ changed that and its now up to pip to sort this out transitively, and it turns out that doesn't work well.

I've put up https://review.openstack.org/#/c/136879/ to cap oslo.vmware on stable/icehouse to 0.5.0, which was the last version that its eventlet requirement matched the rest of stable/icehouse.

[Adam Gandelman (gandelman-a)]

Easier fixes here: https://review.openstack.org/#/q/I7f06a030cd9f31f3741c1ea4c97a2be3b76b978c,n,z

Unfortunately, there are no grenade icehouse->juno tests on stable/icehouse so we have no way of testing that this solves the issue pre-merge.

[Adam Gandelman (gandelman-a)]

Actually there are forward tests in the experimental pipeline but they are probably not functional pending https://review.openstack.org/#/c/136899/

[Alan Pevec (apevec)]

Easier fixes did not help, Cap oslo.vmware to <0.6.0 https://review.openstack.org/136879 was merged to stable/icehouse requirements.