Pre_tasks using best practices layout

[fokeyjo]

Hiya,

Hopefully this is an easy quick question.. I'm using the layout described in http://docs.ansible.com/playbooks_best_practices.html.

I want to define a pre-task to a role defined in meta/main.yml, but I can't seem to do it. If my tasks/main.yml looks like this:
---
pre_tasks:
- name: Install virtualenv
  yum: name=python-virtualenv state=present

I get: ERROR: expecting dict; got: pre_tasks, error in <snip>/tasks/main.yml

The page http://docs.ansible.com/playbooks_roles.html#roles seems to indicate that no other files or folders represent pre_tasks.

So how do I define pre_tasks?

Thanks,

Fokeyjo

[Michael DeHaan]

Ansible roles don't have a way of defining pre and post tasks. 

They are usually defined as a way to do things before applying generic tasks/roles, like load balancing, and it would be a little confusing to have them in the list of roles when some steps would be executed out of order.

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