fix(release): restore watchOS, unbreak visionOS

[proggeramlug]

Two separate problems. One is a latent release breakage; the other kept a platform out for months on a misdiagnosis.

1. visionOS was broken, and no release had caught it

dyn-eval joined perry-runtime's default feature set in #6584 (2026-07-18). It reaches psm three crates down — dyn-eval → perry-parser → swc_ecma_parser → stacker → psm — and psm selects its assembly with:

#if defined(CFG_TARGET_OS_darwin) || defined(CFG_TARGET_OS_macos) || defined(CFG_TARGET_OS_ios) || defined(CFG_TARGET_OS_tvos)

watchos and visionos aren't in that list, so both fall through to the #else ELF branch and emit .type/.size — directives the Mach-O assembler rejects. Nothing in Perry is involved.

release-packages.yml builds these targets with default features, and its last successful run was 2026-07-04 — before the regression. The two runs since were cancelled. So this was sitting there waiting for the next release.

Fixed upstream: rust-lang/stacker#152. Until that lands, watchOS and visionOS build default minus dyn-eval — the list in the workflow is exactly that, nothing else — so the only capability they lose is runtime new Function over a string body. There's a DELETE this branch when it lands marker on both sites.

2. watchOS was dropped for a reason that never applied to the triple it ships on

The v0.5.888 note said:

ring 0.17.14 has a pointer-size assertion that fails for arm64_32-apple-watchos (32-bit pointers with 64-bit regs)

That's true — and ILP32-specific. aarch64-apple-watchos is LP64. ring builds for it, and so does perry-ui-watchos. The note also asserted "watchOS = arm64_32" as though that were the only watchOS triple, which is what made the drop look total.

Restored on the LP64 device triple + its simulator, across all three sites that needed it: the build: cross-compile loop, the build-cross matrix, and the bottle staging step. arm64_32 stays out until ring is fixed or pinned.

Verification

Per-target cargo check on stable, with the exact feature list the workflow now passes:

target	runtime + -static	stdlib + -static	UI crate
aarch64-apple-watchos	✅	✅	✅
aarch64-apple-watchos-sim	✅	✅	✅
aarch64-apple-visionos	✅	✅	✅
aarch64-apple-visionos-sim	✅	✅	✅

cargo check isn't proof a staticlib emits, so I also ran the real thing — cargo +nightly build -Z build-std=core,std,panic_abort --target aarch64-apple-watchos:

Finished `dev` profile in 1m 05s
target/aarch64-apple-watchos/debug/libperry_runtime.a   391M
lipo -info: architecture arm64
LC_BUILD_VERSION: platform 4      <- PLATFORM_WATCHOS

A genuine watchOS arm64 archive, not a host build in a differently-named directory.

library_search.rs already maps _watchos / _watchos_sim (lines 1092–1093), so no compiler-side change was needed.

Comments corrected

Three claimed watchOS was dropped; one asserted the device triple is arm64_32. The second is what kept the platform out — worth fixing precisely rather than deleting, since the ILP32 constraint is still real for that triple.

Risk

Release-workflow only; no library or compiler code changes. The if [ -f ] guards in staging keep the existing degrade-gracefully behavior, so a target that fails to build drops out of the bottle rather than failing the job — same as today.

Summary by CodeRabbit

• New Features

  • Restored 64-bit watchOS device and simulator builds in release packages.
  • Added watchOS libraries to cross-platform bundles alongside tvOS and visionOS artifacts.
  • Added release support for affected visionOS and watchOS targets.

• Bug Fixes

  • Fixed visionOS and watchOS release build failures by excluding unsupported runtime features where necessary.
  • Excluded the unsupported 32-bit watchOS target from release builds.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: 40f3e43c-f913-493e-a984-2b2b6815c257

📥 Commits

Reviewing files that changed from the base of the PR and between fe3afc5 and 3b4c48a.

📒 Files selected for processing (2)

• .github/workflows/release-packages.yml
• changelog.d/7379-release-watchos-visionos.md

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📝 Walkthrough

Walkthrough

The release workflow restores LP64 watchOS device and simulator builds, excludes dyn-eval from watchOS and visionOS runtime builds, and stages the restored watchOS libraries. A changelog entry documents the platform fixes and verification results.

Changes

Release workflow fixes and changelog

Layer / File(s)	Summary
Host build and staging: restore watchOS, exclude dyn-eval .github/workflows/release-packages.yml	Restores aarch64 watchOS device and simulator builds, applies reduced runtime features for watchOS and visionOS, and adds watchOS targets to Apple cross-library staging.
Cross-compile matrix: watchOS entries and feature selection .github/workflows/release-packages.yml	Adds LP64 watchOS targets to the Tier-3 matrix and applies the dyn-eval exclusion to watchOS and visionOS runtime cross-bundle builds.
Changelog entry documenting the fixes changelog.d/7379-release-watchos-visionos.md	Documents the visionOS assembly incompatibility, the watchOS pointer-size correction, restored targets, verification results, and corrected comments.

Estimated code review effort: 3 (Moderate) | ~25 minutes

Suggested labels: run-extended-tests

Suggested reviewers: andrewtdiz

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly summarizes the two main workflow fixes: restoring watchOS builds and resolving the visionOS release breakage.
Description check	✅ Passed	The description thoroughly explains the root causes, workflow changes, verification results, platform scope, and risk, despite omitting explicit template headings and checklist items.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/release-watchos-visionos

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