variables: a: description: optional variable default: default-a b: description: required variable d: description: variable with lookup default: "" e: description: variable with lookup default: "some-value" f: description: variable with lookup lookup: cluster_policy: wrong-cluster-policy bundle: name: test bundle workspace: profile: ${var.a} ${var.b} targets: env-with-single-variable-override: variables: b: dev-b env-missing-a-required-variable-assignment: variables: a: staging-a env-with-two-variable-overrides: variables: a: prod-a b: prod-b env-using-an-undefined-variable: variables: c: prod-c b: prod-b env-overrides-lookup: variables: d: lookup: cluster: some-test-cluster e: lookup: instance_pool: some-test-instance-pool f: lookup: cluster_policy: some-test-cluster-policy b: prod-b