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ci: run macOS jobs on GitHub-hosted runners alongside Blacksmith - #14097
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📝 WalkthroughWalkthroughThe app-host unit-test matrix now assigns same-repository pull-request shards across Blacksmith and GitHub-hosted macOS runners. Fork pull requests use the Blacksmith macOS 15 fallback. A workflow check validates GitHub-hosted selections, and documentation and tests reflect the routing. ChangesApp-host pull-request runner routing
Priority: ➖ Normal Estimated code review effort: 2 (Simple) | ~10 minutes Change: Other Merge Risk: 🟡 Moderate · up to Pull-request app-host tests now spread across four macOS pools. Some shards may still be routed to a self-hosted runner and then fail. The runner docs recommend an Xcode pin change that would break the hosted macOS 15 shard. The new routing test cannot detect when the hosted pools are removed from the matrix. Confirm the runner labels and correct the docs and test before merging. 🚥 Pre-merge checks | ✅ 25✅ Passed checks (25 passed)
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Probe 1 results (run 35944848342, commit 1)
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Finding: right now PR macOS jobs run on hosted At 02:24Z someone set
Leo wants all four pools (Blacksmith 15 and 26, hosted 15 and 26) running jobs at the same time. That creates two constraints for this PR:
For comparison, #14083 already runs a PR that only changes tests on one worker instead of 7, so the new capacity would go to runs that actually need it. — Yorick g1 🍂 |
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BUT WHY CLOSE THIS FIRST THO |
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The close was an artifact of syncing this branch to current |
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In @.github/workflows/ci-macos.yml:
- Line 998: Update the `pr_runner` routing for shards 4 and 7 so it cannot match
the self-hosted fleet’s `macos-26` label; reserve that label for GitHub-hosted
jobs or use an unambiguous hosted-runner route. Keep the existing
`runner.environment` check compatible with the selected route.
In `@docs/ci-runners.md`:
- Around line 104-105: Update the PR pin example tied to MACOS_RUNNER_PR and
CMUX_CI_XCODE_APP_PR so it does not select Xcode 26.5 for app-host shards that
lack support; use a version supported by every pool, or state that the shared
pin must not change until all four pools support the selected version.
In `@tests/test_ci_cmux_unit_test_shard.py`:
- Line 637: Update the pool validation around required_pr_pools and
missing_pools to parse the matrix.include rows and compare each shard’s
pr_runner by exact value, rather than checking whether pool names occur as
substrings in job text; require all four pools to be represented.
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…n on 26.3 The four-pool check matched labels as substrings, so macos-15 passed inside blacksmith-6vcpu-macos-15. Read each matrix row's pr_runner exactly. The docs example pinned Xcode 26.5, which the macos-15 pools lack and every app-host shard reads. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01EduXdN9PKnGsMQztJK7WeE
Same-repository pull-request shards now span images with different Xcodes (26.3 on macos-15, 26.6 on macos-26). They pin none: each takes the newest stable macOS 26 SDK Xcode on its machine, and restore accepts any point release of the admission build's major Xcode instead of an exact xcodebuild -version match. Forks and other events keep the pin. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01EduXdN9PKnGsMQztJK7WeE
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01EduXdN9PKnGsMQztJK7WeE
Ports #14123 so this PR's macOS compile admission can build: main at 36c3050 references RestorableAgentProcessLiveness without importing the module that declares it. No-op once main carries #14123. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01EduXdN9PKnGsMQztJK7WeE
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Keeps #14023's fork-repository routing: a workflow running in a fork's own repository has no Blacksmith, so its app-host shards split across GitHub-hosted macos-15 and macos-26 by each shard's pool OS. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01EduXdN9PKnGsMQztJK7WeE
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…ore checkout #14023's fork routing guard only recognised a literal macos-15 fork branch. It now also accepts matrix.hosted_runner when every hosted_runner row in the workflow is a GitHub-hosted macOS label, which is how the app-host shards split fork-repository runs over macos-15 and macos-26. The GitHub-hosted route check now runs before checkout, and the job comment no longer claims the shards share one exact Xcode pin. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01EduXdN9PKnGsMQztJK7WeE
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5b646b7 ci: apply the queue janitor threshold per runner pool (manaflow-ai#14131) d49a1b1 ci: reuse the headless cmux-tui build in SDK conformance (manaflow-ai#14108) ba85a1b ci: key reload-build caches on the commit and fall back across branches (manaflow-ai#14099) 27fb3bf ci: hand focused test-macos-suite dispatches to run-e2e.sh (manaflow-ai#14075) d18c1b9 ci: let a failed compile admission mark a run doomed for the queue janitor (manaflow-ai#14129) dfdce2c ci: bind pull request product reuse to the merge it compiled (manaflow-ai#14080) afacff3 ci: sparse-checkout the Claude wrapper regression job (manaflow-ai#14088) 35a6bb1 ci: stop pinning remote-daemon macOS tests to the macOS 26 pool (manaflow-ai#14128) 1ba6d77 ci: run macOS jobs on GitHub-hosted runners alongside Blacksmith (manaflow-ai#14097) 587de87 Import CmuxWorkspaces where CodexTurnRestoreIntentPolicy names its liveness type (manaflow-ai#14123) # Conflicts: # .github/workflows/ci-guards.yml # .github/workflows/ci-macos.yml # .github/workflows/ci-queue-janitor.yml # .github/workflows/ci.yml # .github/workflows/cmux-tui-sdks.yml # .github/workflows/reload-build.yml # .github/workflows/remote-daemon.yml # .github/workflows/test-macos-suite.yml
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…ode (#14163) * test: app-host product consumers must run on the producer's pool and Xcode A pull request's compile admission runs where MACOS_RUNNER_PR points (currently Blacksmith macOS 26, Xcode 26.6), but the app-host shard matrix hard-codes its own pools, including blacksmith-6vcpu-macos-15 for the changed-suites worker and shards 1, 3 and 5. Those select Xcode 26.3, whose Testing.framework lacks symbols the 26.6-linked cmuxTests bundle imports, so the bundle fails to dlopen before any test runs (runs 35958884147 and 35959632037). These guards fail on main: - compile admission publishes its pool and Xcode as outputs, and every ci-macos.yml job that downloads its product either reads those outputs or restates its exact expressions; a new admission route (such as main's full-suite dispatch taking the pull-request pool) is caught; - restore refuses products from a newer Xcode, naming both versions; - app-host-test-rerun.yml runs on the pool that built the products. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_012pAcDGiHaibDaMU4CPvXAP * ci: run app-host product consumers on compile admission's pool and Xcode The app-host shards ran test-without-building on pools hard-coded per matrix row (#14097), with no Xcode pin on same-repository pull requests. Once MACOS_RUNNER_PR moved compile admission to Blacksmith macOS 26 (Xcode 26.6), every shard on macOS 15 selected Xcode 26.3 and failed to load the cmuxTests bundle: "Symbol not found: ...Testing.Attachment... Expected in: Xcode_26.3.app/.../Testing.framework". The changed-suites worker (shard 8) sits on macOS 15, so every PR that edits cmuxTests/ went red; full-suite shards 1, 3 and 5 are on macOS 15 too. - macos-compile-admission publishes `runner` and `xcode_app` outputs. app-host-unit-tests runs on `needs.macos-compile-admission.outputs.runner` and pins its `xcode_app`, and the matrix rows no longer name pools, so any routing change to the admission moves the shards with it. - tests-build-and-lag already restated the admission's route and pin; it is unchanged, and the new guard fails when the two drift. - app_host_test_products.py restore refuses a product built by a newer Xcode than the job's, naming both versions, instead of letting xcodebuild crash in dlopen. - app-host-test-rerun.yml runs on the Blacksmith pool whose macOS matches the source run's compile admission, since only that image carries the products' Xcode. This gives up striping PR shards across Blacksmith and GitHub-hosted macOS 15/26. Restoring a spread needs every pool involved to carry the admission's exact Xcode. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_012pAcDGiHaibDaMU4CPvXAP --------- Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
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#14158) * test: main's full-suite admission must adopt the seed on the seed's pool ci-main-full-suite.yml dispatches ci.yml on main, and its compile admission compiles main's HEAD cold on blacksmith-6vcpu-macos-15 while seed-derived-data.yml has just built the same commit, or its parent, on MACOS_RUNNER_PR. These tests evaluate the admission routing and the seed step condition for a main dispatch and require both to match the seeder. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_012pAcDGiHaibDaMU4CPvXAP * ci: let main's full-suite admission adopt the DerivedData seed Every main push compiled the same commit twice: seed-derived-data.yml built it on MACOS_RUNNER_PR, and the ci.yml run ci-main-full-suite.yml dispatches compiled it again from cold on blacksmith-6vcpu-macos-15, because seed adoption was limited to pull requests and a seed only matches on the pool and Xcode that built it. Compile admission for a workflow_dispatch on main now runs on the pull-request pool with the pull-request Xcode, the pair the seeder uses, and adopts the seed of the commit it tests. When that seed is still building, the newest one (usually the parent's) leaves one merge's diff to compile. Merge groups and dispatches on other branches are unchanged. Seeds are written only by main-branch jobs in the ci-cache-writer environment and read here through the public URL without credentials, as pull requests already read them. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_012pAcDGiHaibDaMU4CPvXAP * test: app-host product consumers must run on the producer's pool and Xcode A pull request's compile admission runs where MACOS_RUNNER_PR points (currently Blacksmith macOS 26, Xcode 26.6), but the app-host shard matrix hard-codes its own pools, including blacksmith-6vcpu-macos-15 for the changed-suites worker and shards 1, 3 and 5. Those select Xcode 26.3, whose Testing.framework lacks symbols the 26.6-linked cmuxTests bundle imports, so the bundle fails to dlopen before any test runs (runs 35958884147 and 35959632037). These guards fail on main: - compile admission publishes its pool and Xcode as outputs, and every ci-macos.yml job that downloads its product either reads those outputs or restates its exact expressions; a new admission route (such as main's full-suite dispatch taking the pull-request pool) is caught; - restore refuses products from a newer Xcode, naming both versions; - app-host-test-rerun.yml runs on the pool that built the products. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_012pAcDGiHaibDaMU4CPvXAP * ci: run app-host product consumers on compile admission's pool and Xcode The app-host shards ran test-without-building on pools hard-coded per matrix row (#14097), with no Xcode pin on same-repository pull requests. Once MACOS_RUNNER_PR moved compile admission to Blacksmith macOS 26 (Xcode 26.6), every shard on macOS 15 selected Xcode 26.3 and failed to load the cmuxTests bundle: "Symbol not found: ...Testing.Attachment... Expected in: Xcode_26.3.app/.../Testing.framework". The changed-suites worker (shard 8) sits on macOS 15, so every PR that edits cmuxTests/ went red; full-suite shards 1, 3 and 5 are on macOS 15 too. - macos-compile-admission publishes `runner` and `xcode_app` outputs. app-host-unit-tests runs on `needs.macos-compile-admission.outputs.runner` and pins its `xcode_app`, and the matrix rows no longer name pools, so any routing change to the admission moves the shards with it. - tests-build-and-lag already restated the admission's route and pin; it is unchanged, and the new guard fails when the two drift. - app_host_test_products.py restore refuses a product built by a newer Xcode than the job's, naming both versions, instead of letting xcodebuild crash in dlopen. - app-host-test-rerun.yml runs on the Blacksmith pool whose macOS matches the source run's compile admission, since only that image carries the products' Xcode. This gives up striping PR shards across Blacksmith and GitHub-hosted macOS 15/26. Restoring a spread needs every pool involved to carry the admission's exact Xcode. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_012pAcDGiHaibDaMU4CPvXAP * ci: keep display verification on admission's pool for main's full suite tests-build-and-lag restates compile admission's route and Xcode pin, because the test bundles only load under the Xcode that linked them. With admission moving main's full-suite dispatch to MACOS_RUNNER_PR and the pull-request Xcode, the display job kept the macos-15 route and the 26.3 pin, which the product-consumer guard from #14163 rejects. Give its runs-on, REQUESTED_RUNNER and Xcode pin the same main-dispatch condition. It keeps restating the route rather than reading admission's outputs so paid overflow can still move non-PR display work to MACOS_RUNNER_DISPLAY. The guard's hypothetical-route test used main dispatch as its example, which this branch makes real; it now uses merge groups. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_012pAcDGiHaibDaMU4CPvXAP --------- Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
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Summary
Pull-request macOS CI was a single-pool lane: changing
MACOS_RUNNER_PRmoved every PR job from one pool to another. The app-host suite has seven parallel consumers, so it is where the other pools' capacity can be used right away.This PR spreads same-repository pull-request app-host shards across all four macOS pools at once:
blacksmith-6vcpu-macos-15blacksmith-6vcpu-macos-26macos-15macos-26blacksmith-6vcpu-macos-15blacksmith-6vcpu-macos-26macos-26MACOS_RUNNER_15routing.matrix.hosted_runnersends the macOS 15 shards tomacos-15and the macOS 26 shards tomacos-26.Xcode
The images carry different Xcodes: 26.3 on
macos-15, 26.6 onmacos-26. Same-repository PR shards therefore pin none. Each takes the newest stable Xcode with the macOS 26 SDK on its machine.The seven shards still reuse the single compile-admission product.
app_host_test_products.py restorenow compares the Xcode major version, so a product built with 26.3 runs on a 26.6 shard. It still rejects another source revision, another architecture, or another major Xcode. Forks and non-PR events keep their pin.Guardrails
macos-*shard request fails unlessrunner.environment == github-hosted.pr_runnerand requires all four pools.docs/ci-runners.mddescribes the app-host exception to the singleMACOS_RUNNER_PRlane.Also carries #14123's one-line
import CmuxWorkspacesfix, without which main does not compile. It becomes a no-op once #14123 lands.Testing
Ran locally on the merged head: shard layout, self-hosted runner guard, change areas, restore handoff, product reuse, runner label policy and workflow structure guards, plus
actionlint. The real proof is this PR's own CI: the seven app-host shards should start on all four pools and restore one admission product.🤖 Generated with Claude Code
Summary by CodeRabbit
CI Improvements
Documentation