Terrafiddle

users.tf.rb

users = %w(
  abc
  def
  ghi
  jkl
)

def autohash
  Hash.new { |h, k| h[k] = autohash }
end

resources = autohash

resources[:aws_iam_group]["Administrators"] = {
  name: "Administrators"
}

resources[:aws_iam_group_membership]["Administrators"] = {
  name: "Administrators",
  users: users,
  group: "${aws_iam_group.Administrators.name}"
}

users.each do |user|
  resources[:aws_iam_user][user] = {
    name: user
  }
end

require 'json'
puts JSON.pretty_generate({resource: resources})