This example shows some advanced features of Terramate.

advanced_example_config.tm.hcl

# file: stacks/config.tm

globals {
  # define a bucket name that is used when generating backend.tf defined below
  gcs_bucket_name = "my-state-bucket"
  # the following will calculate the path name of each stack 
  # but remove the / prefix as gcs does not handle this well
  gcs_bucket_prefix = tm_substr(terramate.path, 1, -1)
}

# The block label specifies the name of the file to create in stacks
# This file will be generated in all stacks reachable from this configuration
generate_hcl "backend.tf" {
  content {
    terraform {
      backend "gcs" {
        bucket = global.gcs_bucket_name
        prefix = global.gcs_bucket_prefix
      }
    }
  }
}