ckantoolkit is a library that wraps ckan.plugins.toolkit with backported attributes. This library is useful for writing extensions that work with a wide range of CKAN versions.

# compatible with CKAN >= 2.5 only
from ckan.plugins.toolkit import ungettext

becomes:

# compatible with all CKAN versions!
from ckantoolkit import ungettext

ckantoolkit includes a tests submodule that points to the correct ckan test module. e.g. If your extension builds on ckan's test factories your import code:

try:
    from ckan.tests.factories import Sysadmin
except ImportError: # for ckan <= 2.3
    from ckan.new_tests.factories import Sysadmin

becomes:

from ckantoolkit.tests.factories import Sysadmin