{%- set service_grains = {'sphinx': {'doc': {}}} %}
{%- for service_name, service in pillar.items() %}
{%- if service.get('_support', {}).get('sphinx', {}).get('enabled', False) %}
{%- set grains_fragment_file = service_name+'/meta/sphinx.yml' %}
{%- macro load_grains_file() %}{% include grains_fragment_file %}{% endmacro %}
{%- set grains_yaml = load_grains_file()|load_yaml %}
{%- set _dummy = service_grains.sphinx.doc.update({ service_name: grains_yaml.doc }) %}
{%- endif %}
{%- endfor %}
{{ service_grains|yaml(False) }}