[FEATURE] required vars

[ygersie]

Just like with Terraform it would be nice to be able to set required vars:

variable foo {}

In yaml that would be an empty key:

---
foo:

This would make it easier to force a user setting a dynamic var like version

[jrasell]

So in this case it would mean a user would need to input the variable by typing on the CLI?

[ygersie]

Yeah either prompt or (in my case better) fail with a log message. We run Levant from CI so failing instead of waiting for user input would be nice.

Terraform has:

-input=true - Ask for input for variables if not directly set.