basic usage of watch_in

install_package.sls

my_package:
  pkg:
    - installed
    - name: awesome_software

awesome_software_service:
  service:
    - running
    - enable: True

software_conf.sls

include:
  - awesome_software_directory.install_package

software_conf:
  file:
    - managed
    - name: /path/to/software.conf
    - source: salt://awesome_software/files/software.conf.jinja
    - user: root
    - group: root
    - mode: 640
    - template: jinja
    - require:
      - sls: awesome_software.install_package
    - watch_in:
      - service: awesome_software_service