Installing apt repos and keys and packages

apt.yml

# -*- eval: (ansible) -*-
- apt_repository:
    filename: "{{ item }}"
    repo: "{{ packages[item].repo | mandatory }}"
    update_cache: no
  notify: apt update

- apt_key:
    keyring: "{{ item }}.gpg"
    id: "{{ packages[item].key.id | mandatory }}"
    url: "{{ packages[item].key.url }}"
  when: packages[item].key.url is defined
  notify: apt update

- apt_key:
    keyring: "{{ item }}.gpg"
    id: "{{ packages[item].key.id | mandatory }}"
    keyserver: "{{ packages[item].key.keyserver | default('keys.gnupg.net') }}"
  when: packages[item].key.url is not defined
  notify: apt update

main.yml

# -*- eval: (ansible) -*-
- hosts: localhost
  become: True
  tasks:
    - include_vars:
        name: packages
        dir: .
        files_matching: "packages_.*\.yml"

    - include: apt.yml
      with_items: "{{ packages.keys() }}"

    # Force the 'apt update' handler to run now (if necessary at all)
    - meta: flush_handlers

    - apt:
        name: "{{ item }}"
        state: latest
      with_items: "{{ packages.keys() | map('extract', packages, 'packages') | sum(start=[]) }}"
  handlers:
    - name: apt update
      apt: update_cache=yes

packages_cura.yml

cura:
  repo: deb http://download.alephobjects.com/ao/aodeb {{ ansible_distribution_release }} main
  key:
    id: 0xDABF50135F6F1293ED0F60270EB44AD9A71B242A
    url: http://download.alephobjects.com/ao/aodeb/aokey.pub

  packages: [ cura ]