ansible/ansible — pull request #452 by emgee (2012-06-06 20:58:21+00:00)
Title: Search multiple paths for modules.

Minimal change to allow a list of paths (separated by the typical path
separator) to be searched in sequence for the named module.

However ...

Adding an additional module path (the norm I would expect) is definitely awkward right now because you have to know the path to Ansible's built-in modules. It also makes scripts, etc, dependent on the environment.

I believe the --module-path/--no-default-module-path combination would make things much easier and just as explicit, with a small change in backwards compatibility. See discussion for more, https://groups.google.com/d/topic/ansible-project/4_NkI-MPprI/discussion.