[perfunctory]

> {{ .BindVar "name" .Input.user_name }}

Now, this definitely looks like a programming language construct. How long before this project gets loops and conditionals? See for example ansible.

[akvadrako]

It uses HCL and the new unreleased version does have loops and conditionals:

https://www.hashicorp.com/blog/terraform-0-1-2-preview