User variables not usable in Builder name

[fnichol]

I may have over-DRYed things here, but found that the name attributes doesn't get evaluated for user variables:

> cat template_aws.json
{
  "variables": {
    "name_prefix": "cool-",
    "platform": "beans"
  },
  "builders": [
    {
      "name": "{{user `name_prefix`}}{{user `platform`}}_aws",
      "type": "amazon-ebs",
      "region": "us-east-1",
      "source_ami": "ami-de0d9eb7",
      "instance_type": "t1.micro",
      "ssh_username": "ubuntu",
      "ami_name": "packer-example {{timestamp}}"
    }
  ]
}
> packer build template_aws.json
{{user `name_prefix`}}{{user `platform`}}_aws output will be in this color.

==> {{user `name_prefix`}}{{user `platform`}}_aws: Creating temporary keypair for this instance...
==> {{user `name_prefix`}}{{user `platform`}}_aws: Creating temporary security group for this instance...
==> {{user `name_prefix`}}{{user `platform`}}_aws: Authorizing SSH access on the temporary security group...
==> {{user `name_prefix`}}{{user `platform`}}_aws: Launching a source AWS instance...
==> {{user `name_prefix`}}{{user `platform`}}_aws: Waiting for instance (i-9d9c78ff) to become ready...

Thanks again for such awesome tooling that helps me each and every day!!

[mitchellh]

Oof, I'd like to make this work. Tagging it. Thanks.

[bscofield]

This just bit me too, FWIW

[bscofield]

Incidentally, it looks like the interpolation doesn't work for the key in the following case, either:

{
  "variables": {
     "role": "statsd"
   },
  "provisioners": [
    {
      "type": "shell",
      "scripts": ["../scripts/base.sh"],
      "override": {
        "{{user `role`}}": { "execute_command": "echo 'vagrant'|sudo -S sh '{{.Path}}'" }
      }
    }
  ],
  ...
}

$ > packer build template.json
....
==> statsd: Provisioning with shell script: ../scripts/base.sh
    statsd: E: Could not open lock file /var/lib/apt/lists/lock - open (13: Permission denied)
    statsd: E: Unable to lock directory /var/lib/apt/lists/
    statsd: E: Could not open lock file /var/lib/dpkg/lock - open (13: Permission denied)
    statsd: E: Unable to lock the administration directory (/var/lib/dpkg/), are you root?
    statsd: E: Could not open lock file /var/lib/dpkg/lock - open (13: Permission denied)
    statsd: E: Unable to lock the administration directory (/var/lib/dpkg/), are you root?
    statsd: E: Could not open lock file /var/lib/dpkg/lock - open (13: Permission denied)
    statsd: E: Unable to lock the administration directory (/var/lib/dpkg/), are you root?
    statsd: E: Could not open lock file /var/lib/dpkg/lock - open (13: Permission denied)
    statsd: E: Unable to lock the administration directory (/var/lib/dpkg/), are you root?
    statsd: E: Could not open lock file /var/cache/apt/archives/lock - open (13: Permission denied)
    statsd: E: Unable to lock the download directory
    statsd: mv: cannot move `/tmp/vagrant' to `/etc/sudoers.d/vagrant': Permission denied

[mitchellh]

Fixed, finally. :)