Tya v0.66 Release Notes

v0.66 freezes the v1 release-gate policy and locks in the remaining v1 standard-library blocker contracts.

Release Gate

• The latest self-host compiler line is the v1.0.0 release-critical self-host gate.
• selfhost/v01 remains maintained legacy regression coverage, but no longer defines v1.0.0 language validity or release readiness once the latest self-host gate is green.
• scripts/dev_selfhost_smoke.sh provides a fast development self-host smoke gate.
• scripts/release_gate.sh runs the full release-tag gate: latest self-host fixed point, no-Go bootstrap proof, and full repository conformance checks.

Standard Library

• regex/Regex is part of the v1 stdlib blocker set.
• Filesystem utilities in file/File and dir/Dir are part of the v1 stdlib blocker set.
• time/Time is part of the v1 stdlib blocker set.
• Environment and process APIs in os/Os and process/Process are part of the v1 stdlib blocker set.
• hmac/Hmac is part of the v1 stdlib blocker set.

Specification

• v1 authority order is now documented: specification first, latest self-host implementation second when it implements the documented v1 surface, and the Go implementation third as reference/bootstrap recovery.
• v1.x syntax evolution is conservative: ordinary v1.x releases may add APIs, tooling, diagnostics, and compatible runtime behavior, but new syntax is reserved for v2 planning or an explicitly accepted experimental path.
• Package-manager behavior is documented as v1 public contract, including manifest validation, explicit git/path dependencies, lockfiles, native metadata, and no central registry.
• docs/DIAGNOSTICS.md lists every current public TYA-E.... diagnostic code.

Verification

The release gate passed:

go test ./... -count=1 -timeout=20m