Traceback when simplejson < 2.1.0 is installed

When simplejson 2.0.9 (the version available in RHEL 6) is installed, the following traceback occurs when attempting to use libcloud:

Traceback (most recent call last):
File "/usr/lib/python2.6/site-packages/salt/loader.py", line 951, in _load_module
), fn_, fpath, desc)
File "/usr/lib/python2.6/site-packages/salt/cloud/clouds/rackspace.py", line 46, in <module>
from libcloud.compute.base import NodeState
File "/usr/lib/python2.6/site-packages/libcloud/compute/base.py", line 32, in <module>
from libcloud.pricing import get_size_price
File "/usr/lib/python2.6/site-packages/libcloud/pricing.py", line 26, in <module>
JSONDecodeError = json.JSONDecodeError
AttributeError: 'module' object has no attribute 'JSONDecodeError'

Upgrading to simplejson 2.1.0 or greater fixes this issue. Applying the following fix to libcloud should resolve the issue: http://www.fpaste.org/225608/49936143/