collection_requirements.yml

- name: Build custom requirements.txt
  hosts: localhost
  connection: local
  gather_facts: no
  vars:
    req_list: []
  tasks:
  - name: Import requirements.yml to use collections list
    include_vars: ./_build/requirements.yml

  - set_fact:
      req_list: "{{ req_list + lookup('file', req_path).split('\n') | select() }}"
    loop: "{{ collection_paths }}"
    vars:
      collection_paths: "{{ collections | product(['.txt']) | map('join') | list }}"
      req_path: "./collection_requirements/{{ item }}"


  - name: Add contents of each collections python dependencies to requirements.txt
    lineinfile:
      path: ./_build/requirements.txt
      line: "{{ item | replace(ee, gt) }}"
      create: yes
      firstmatch: yes
    loop: "{{ req_list }}"
    vars:
      ee: '=='
      gt: '<='