Merge of empty dict and dict with entries doesn't work

[t2d]

# common.yaml
test:
  - entry

# node.yaml
test:

Traceback:

  File "./inventory/hiera.py", line 91, in get_inventory
    method=hiyapyco.METHOD_MERGE)
  File "build/bdist.linux-x86_64/egg/hiyapyco/__init__.py", line 410, in load
  File "build/bdist.linux-x86_64/egg/hiyapyco/__init__.py", line 200, in __init__
  File "build/bdist.linux-x86_64/egg/hiyapyco/__init__.py", line 347, in _deepmerge
  File "build/bdist.linux-x86_64/egg/hiyapyco/__init__.py", line 339, in _deepmerge
hiyapyco.HiYaPyCoImplementationException: can not merge <type 'NoneType'> to <type 'list'> (@ "['entry']"  try to merge "None")

[zerwes]

leave empty vars away or you should init your empty yaml vars correctly for type safety:
test: []
or
xxx: {}
or
strlar: ''
or
....

if this is not a option for your setup I could implement a kwargs i.e. allowmergeintononetype=bool that will default to False in order to preserve type safety and backwards compatibility bot may allow you to force merging of any type into vars w/ None value.