Not really. Python doesn't allow to merge two hashes using "{{ env1 + env2 
}}". Here's what worked for me:

playbooks/filter_plugins/filters.py:

------------------------------------------------
def merge( hash_a, hash_b ):
  return dict(hash_a.items() + hash_b.items());

class FilterModule( object ):
  def filters( self ):
    return { 'merge' : merge }
------------------------------------------------

and then:

environment: "{{ env1 | merge( env2 ) }}"


On Friday, August 1, 2014 3:14:11 PM UTC+2, Michael DeHaan wrote:
>
> So that's a thing already with {{ dict1 + dict2 }}?  
>
> Nice.
>
>
>
>
> On Fri, Aug 1, 2014 at 8:53 AM, Brian Coca <[email protected] 
> <javascript:>> wrote:
>
>> dict1 + dict2 
>>
>> I also have an update to 'set theory' that will allow you to do 
>> dict1|union(dict2)
>> ​
>>
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