$ grep -A 15 'postgres:' defaults.yaml
postgres:
  version: '9.4'
  shortversion: '94'
  pgdg_release: '3'

  #pkg_client:
  #  - postgresql94
  #  - postgresql94-libs
  #pkg_server:
  #  - postgresql94-contrib
  #  - postgresql94-devel
  #  - postgresql94-server
  #  - postgresql94-plpython
  pkg_client: [ postgresql94, postgresql94-libs ]
  pkg_server: [ postgresql94-contrib, postgresql94-devel, postgresql94-server, postgresql94-plpython ]

$ cat map.jinja
# vim: set expandtab tabstop=2 shiftwidth=2 autoindent: vim modeline
#
# Map the default values from defaults.yaml to something we can use
#
{% import_yaml "postgres/defaults.yaml" as defaults %}

{% set postgres = salt['grains.filter_by'](
    defaults,
    base='postgres',
) %}

$ head -n 15 server.sls
# vim: set expandtab tabstop=2 shiftwidth=2 autoindent: vim modeline
#
{%- from "postgres/map.jinja" import postgres with context %}

include:
  - .client
  - .repo

pg-server-packages:
  pkg.installed:
    - pkgs:
      - {{ postgres.pkg_server }}

pg-mkdata-dir:
  file.directory: