Open Stack

Hi all!

I've seen a couple of patches removing "usedevelop = true" from tox.ini. 
This has 2 nasty consequences:
1. It's harder to manually experiment in tox environment, as you have to 
explicitly use 'tox' command every time you change code
2. The most important, it breaks tox invocation for all people who don't 
have very recent pbr and setuptools in their distributions (which I 
suspect might be the majority of people):

ERROR: invocation failed (exit code 1), logfile: 
/home/dtantsur/.gerrty-git/openstack/futurist/.tox/log/tox-0.log
ERROR: actionid=tox
msg=packaging
cmdargs=['/usr/bin/python', 
local('/home/dtantsur/.gerrty-git/openstack/futurist/setup.py'), 
'sdist', '--formats=zip', '--dist-dir', 
local('/home/dtantsur/.gerrty-git/openstack/futurist/.tox/dist')]
env=None

Installed 
/home/dtantsur/.gerrty-git/openstack/futurist/.eggs/pbr-1.8.1-py2.7.egg
error in setup command: 'install_requires' must be a string or list of 
strings containing valid project/version requirement specifiers; 
Expected ',' or end-of-list in futures>=3.0;python_version=='2.7' or 
python_version=='2.6' at ;python_version=='2.7' or python_version=='2.6'

ERROR: FAIL could not package project - v = 
InvocationError('/usr/bin/python 
/home/dtantsur/.gerrty-git/openstack/futurist/setup.py sdist 
--formats=zip --dist-dir 
/home/dtantsur/.gerrty-git/openstack/futurist/.tox/dist (see 
/home/dtantsur/.gerrty-git/openstack/futurist/.tox/log/tox-0.log)', 1)


Before you ask: using 'sudo pip install -U setuptools pbr' is out of 
question in binary distributions :) so please make sure to remove this 
line only when everyone is updated to whatever version is required for 
understanding these ;python_version=='2.7 bits.

Thank you!