Variables can now resolve at init-time in module source and version attributes using const = true, eliminating module block duplication across environments.
June 9, 2026
Summary
Removes friction from multi-environment infrastructure code by letting teams parameterize registry and version targets without duplicating entire module blocks. Deprecation tooling surfaces breaking changes directly in config validation instead of release notes.
Why it matters
Removes friction from multi-environment infrastructure code by letting teams parameterize registry and version targets without duplicating entire module blocks. Deprecation tooling surfaces breaking changes directly in config validation instead of release notes.
Implementation verdict
Replaces manual module duplication patterns and informal deprecation documentation. Requires terraform init to re-evaluate const variables; terraform validate now checks backend blocks, which may break pipelines using placeholder backends. Ready now for new projects; existing codebases need validation-step fixes first.
Sources
Dev Signal
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