How to manage a modified copy of a file?

- block:
  name: These two are changed every time as modifications are not in original.cnf
  - name: Make a temporary copy
    copy:
      src: original.cnf
      dest: temp.cnf
      force: yes
  - name: Modify temporary copy
    ini_file:
      path: temp.cnf
      section: ...
      option: ...
      value: ...

- block:
  name: With same original.cnf and same modifications, the result will be already installed
  - name: Idempotent copy into place
    register: openssl_config_install
    copy:
      src: temp.cnf
      dest: copy.cnf
      force: yes


- assert:
    that:
      - openssl_config_install is not changed