neuro_ansible/yaml_sub/myrepo_clean.yaml

---
- name: Find files everything except myrepo.repo
  ansible.builtin.find:
    paths: /etc/yum.repos.d
    file_type: file
    excludes: "myrepo.repo"
  register: output
  
- name: Delete other files
  ansible.builtin.file:
    path: "{{ item.path }}"
    state: absent
  loop: "{{ output.files }}"

- name: Check for marker line
  ansible.builtin.lineinfile:
    path: /etc/yum.repos.d/myrepo.repo
    create: true
    state: present
    line: "# BEGIN ANSIBLE MANAGED BLOCK"
  register: marker_check

- name: Delete file if marker is absent
  ansible.builtin.file:
    path: /etc/yum.repos.d/myrepo.repo
    state: absent
  when: marker_check.changed