add defaults

runit/install.sls

+{% from "runit/map.jinja" import runit with context %}
+
 runit_pkg:
   pkg.installed:
-    - name: runit
+    - name: {{ runit.pkg }}
 
 runit_service_directory:
   file.directory:
-    - name: /var/service
+    - name: {{ runit.service_dir }}
     - require:
       - pkg: runit_pkg

runit/map.jinja

+{% import_yaml "runit/os.yaml" as osmap %}
+
+{% set runit = salt.grains.filter_by(
+    osmap,
+    grain='os',
+    merge=salt.pillar.get('runit:lookup', {})
+) %}

runit/os.yaml

+# vim: ts=2 sw=2
+
+FreeBSD:
+  pkg: runit
+  service_dir: /var/service
+  service_name: runsvdir

runit/service.sls

+{% from "runit/map.jinja" import runit with context %}
+
 include:
   - runit.install
 
 runit_runsvdir:
   service.running:
-    - name: runsvdir
+    - name: {{ runit.service_name }}
     - enable: True
     - watch:
       - pkg: runit_pkg