creating directories one-at-a-time causes a plan error

[BrianHicks]

Given the following file:

file.directory "a" {
  destination = "a"
}

file.directory "b" {
  destination = "{{lookup `file.directory.a.destination`}}/b"
}

converge plan outputs the following:

root/file.directory.a:
 Messages:
 Has Changes: yes
 Changes:
  a: "<absent>" => "<present>"

root/file.directory.b:
 Error: resource cannot change because of an error
 Messages:
  "a" does not exist and will not be created (enable create_all to do this)
 Has Changes: yes
 Changes: No changes

Errors:
 * root/file.directory.b: resource cannot change because of an error

Summary: 1 errors, 1 changes

But converge apply works just fine. My suggestion: drop this message to a warning visible to the user in the same place. It's not actually an error since this configuration is acceptable. The alternative is to use create_all everywhere, which defeats the purpose of making single directories safely.