Read YAML file from terraform

main.tf

locals {
  gitlab_groups_files   = fileset(path.module, "../../../config/gitlab/*.yaml")
  gitlab_groups_flatten = [for f in local.gitlab_groups_files : yamldecode(file(f)).groups]
  gitlab_groups = ({
    for group in flatten(local.gitlab_groups_flatten) :
    group.path => {
      name : group.name,
      path : group.path,
      description : try(group.description, ""),
      projects : [for p in try(group.projects, []) : merge(p, group.project_defaults)]
    }
  })
}

module "gitlab_group" {
  for_each = local.gitlab_groups
  source   = "../../modules/gitlab-group"

  group    = each.value
  projects = try(each.value.projects, [])
}