How to implement a mechanism for transitive dependencies in an Ansible playbook?

In Ansible, transitive dependencies between tasks or roles can be implemented using role inclusion and role dependencies.

1. Role dependencies — in the meta/main.yml file of a role, you can specify other roles it depends on. When running the main role, Ansible will automatically execute the dependencies before it.

Example of meta/main.yml:

---
dependencies:
  - role: common
  - role: database

2. Including roles within a playbook — roles can be included in the required order, ensuring dependencies are met.

3. Using include_role or import_role — allows dynamically including roles within tasks, which also helps manage dependencies.

Thus, transitive dependencies are implemented through declaring role dependencies, and Ansible guarantees their sequential execution.