- hosts: host.example.com
  roles:
    - matrixmailer
  vars:
    - matrixmailer_version: "0.1.0"
    - matrixmailer_build: "from_source"
    - matrixmailer_config: "{{ lookup("file", "path/to/config/file/template.yaml") }}"
    # The following option can be left out to use the default git repository
    - matrixmailer_git_repo: "https://git.myorg.com/user/matrixmailer.git"