Salt state for postgres, but require under service doesn't know postgres-9.2 is installed with pkgs.

postgres.sls

postgresql:
  service:
    - running


packages:
  pkg.installed:
    - pkgs:
      - libpq5
      - postgresql-client-9.2
      - postgresql-9.2
    - require:
      - cmd.run: add_postgresql_apt_key
      - file: {{ pg_list }}
      - file: {{ pg_pref }}
    - require_in:
      - service: postgresql