Attribute lookups inside variables are not fully processed

[sparkprime]

The following script does not deploy correctly because ${aws_security_group.terraform_example.name} is not expanded into "terraform_example" and additionally there is no dependency created between the instance and security group.

{
   "variable": {
       "foo": { "default": "${aws_security_group.terraform_example.name}" }
   },
   "provider": {
      "aws": {
         "access_key": "foo",
         "region": "us-west-2",
         "secret_key": "bar"
      }
   },
   "resource": {
    "aws_instance": {
         "web": {
            "ami": "ami-21f78e11",
            "connection": {
               "key_file": "../terraformkp.pem",
               "user": "ubuntu"
            },
            "instance_type": "m1.small",
            "key_name": "terraformkp",
            "provisioner": {
               "remote-exec": {
                  "inline": [
                     "sudo apt-get -y update",
                     "sudo apt-get -y install nginx",
                     "sudo service nginx start"
                  ]
               }
            },
            "security_groups": [
               "${var.foo}"
            ]
         }
      },
      "aws_security_group": {
         "terraform_example": {
            "description": "Used in the terraform",
            "ingress": {
               "cidr_blocks": [
                  "0.0.0.0/0"
               ],
               "from_port": 22,
               "protocol": "tcp",
               "to_port": 80
            },
            "name": "terraform_example"
         }
      }
   }
}

[mitchellh]

This should result in a validation error (it isn't allowed).

Thanks!

[mitchellh]

Fixed