test.yml

# role A - defaults/main.yml
runit_service:

# role A - tasks/main.yml
 command: "echo '{{ item.name}} :: {{ item.script }}'"
 with_items: runit_service
 when: runit_service is iterable
 
# role B - using it in your inventory or somewhere
runit_service:
  - { name: foo, script: "exec 2>&1 chpst -u foo -e /etc/sv/foo/env nodejs /srv/foo/foo.js" }
  - { name: bar, script: "exec 2>&1 chpst -u bar -e /etc/sv/bar/env nodejs /srv/bar/bar.js" }
  - { name: baz, script: "exec 2>&1 chpst -u baz -e /etc/sv/baz/env nodejs /srv/baz/my_app.js" }