ci: drop macOS GitHub runners outside the release path - #1412
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macOS-hosted runners cost the most minutes and are the slowest to schedule, while every shipped macOS artifact is already cross-built from Linux (soldr + cargo-zigbuild + managed Apple SDK) in release-auto.yml. Remove the remaining mac hosts from the push/PR and manual-build lanes: - Delete check-macos.yml (clippy + tests on macos-latest for every push and PR) and its README badge. Only "Dylint" is a required status check on main, so nothing is left waiting on a check that never reports. - platform-boundary-research.yml: drop the macos-latest matrix entry. The scanner walks source rather than expanded modules, so it produces the same union on any host; --host-label is only a print prefix. - build.yml: build aarch64-apple-darwin on ubuntu-latest via the template's mac_cross_linux branch, matching the release matrix, and pass mac_cross_linux through the `with:` block (it was not wired up). release-auto.yml is unchanged -- both apple targets there already run on ubuntu-latest, so no release capability is lost. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01CfdhKY6DmrRJ6mzSTzLU58
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Included review availability: Your plan provides up to 1 included review per hour; 0 remain after this review. 📝 WalkthroughWalkthroughCI removes macOS as a test host and cross-builds the Apple ARM target from Linux. Platform research checks now run on Linux and Windows. Documentation, repository guidance, and status badges reflect the updated CI model. ChangesmacOS cross-build migration
Status and research documentation
Estimated code review effort: 2 (Simple) | ~10 minutes 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
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CLAUDE.md is read at the start of every agent session; leaving "CI: Linux, macOS, Windows" invites the next session to re-add a mac check lane. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01CfdhKY6DmrRJ6mzSTzLU58
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Inline comments:
In @.github/workflows/build.yml:
- Around line 39-40: Update the architecture comments near the ARM wheel
exclusion to state that Rosetta translates x86_64 applications on Apple silicon,
while release-auto.yml provides the x86_64-apple-darwin build lane; preserve the
existing exclusion.
In `@docs/platform-boundary-research.md`:
- Around line 126-128: Update the stale “three-host” references near
“reproducible three-host protocol” and “parser-derived three-host union” to
reflect the current Linux-and-Windows-only CI and cross-built macOS model, or
explicitly label those descriptions as historical so the document does not imply
macOS is still a required research host.
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📒 Files selected for processing (8)
.github/workflows/README.md.github/workflows/build.yml.github/workflows/check-macos.yml.github/workflows/platform-boundary-research.ymlCLAUDE.mdREADME.mddocs/platform-boundary-research-inventory.mddocs/platform-boundary-research.md
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- README.md
- .github/workflows/platform-boundary-research.yml
- .github/workflows/check-macos.yml
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CodeRabbit review on #1412: - build.yml repeated an inverted Rosetta claim (Rosetta runs x86_64 on Apple silicon, not the reverse). Drop the rationale and point at the release matrix, which cross-builds the Intel target from Linux. - CLAUDE.md said release-auto.yml was the only workflow producing an Apple binary; build.yml now cross-builds one too. - platform-boundary-research.md still called the protocol "three-host" two paragraphs above the note saying the macOS lane was dropped. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01CfdhKY6DmrRJ6mzSTzLU58
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…build (#1413) * ci: drop macOS GitHub runners outside the release path macOS-hosted runners cost the most minutes and are the slowest to schedule, while every shipped macOS artifact is already cross-built from Linux (soldr + cargo-zigbuild + managed Apple SDK) in release-auto.yml. Remove the remaining mac hosts from the push/PR and manual-build lanes: - Delete check-macos.yml (clippy + tests on macos-latest for every push and PR) and its README badge. Only "Dylint" is a required status check on main, so nothing is left waiting on a check that never reports. - platform-boundary-research.yml: drop the macos-latest matrix entry. The scanner walks source rather than expanded modules, so it produces the same union on any host; --host-label is only a print prefix. - build.yml: build aarch64-apple-darwin on ubuntu-latest via the template's mac_cross_linux branch, matching the release matrix, and pass mac_cross_linux through the `with:` block (it was not wired up). release-auto.yml is unchanged -- both apple targets there already run on ubuntu-latest, so no release capability is lost. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01CfdhKY6DmrRJ6mzSTzLU58 * docs: record that CI has no macOS hosts CLAUDE.md is read at the start of every agent session; leaving "CI: Linux, macOS, Windows" invites the next session to re-add a mac check lane. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01CfdhKY6DmrRJ6mzSTzLU58 * docs(ci): fix Rosetta direction and stale three-host wording CodeRabbit review on #1412: - build.yml repeated an inverted Rosetta claim (Rosetta runs x86_64 on Apple silicon, not the reverse). Drop the rationale and point at the release matrix, which cross-builds the Intel target from Linux. - CLAUDE.md said release-auto.yml was the only workflow producing an Apple binary; build.yml now cross-builds one too. - platform-boundary-research.md still called the protocol "three-host" two paragraphs above the note saying the macOS lane was dropped. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01CfdhKY6DmrRJ6mzSTzLU58 * fix(esp32): stop re-downloading the 298MB SDK libs on every S3 build `Esp32Framework::ensure_libs` short-circuits when the per-MCU SDK tree is already installed, and `mcu_sdk_complete` decided that by requiring `<mcu>/lib/libfreertos.a`. ESP32-S3 is the one MCU that does not ship that archive there: its FreeRTOS build differs per flash/PSRAM mode, so `libfreertos.a` exists only under the memory-type variant dirs (`dio_opi`, `qio_qspi`, `opi_opi`, ...) while `lib/` holds the other 165 archives. Every other MCU in esp32-arduino-libs 3.3.11 (esp32, c3, c5, c6, h2, p4, p4_es, s2) has it in `lib/`. So on ESP32-S3 the check never passed, and every single build — no-op builds included — re-downloaded and re-extracted the 298 MB SDK archive before reaching the fast-path check. Measured on a bare blink sketch for esp32-s3-devkitc-1, no libraries: before: build succeeded in 135.9s pioarduino-resolve=135907 ms after: build succeeded in 0.3s pioarduino-resolve=286 ms which matches the 0.4s no-op the reporter measured for AVR, ESP8266 and STM32 on the same host. An edit to the sketch still rebuilds and relinks normally (14.5s). `has_freertos_archive` now accepts the archive in `lib/` or in any variant dir one level down. The completion check keeps its other two conditions, so the partial ESP32-C2 tree it was written for is still judged incomplete. Also warn when an existing-but-incomplete MCU SDK dir triggers the re-download: the silent form of this bug cost 132s a build and was invisible in the log. Fixes #1411 Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01CfdhKY6DmrRJ6mzSTzLU58 * fix(esp32): say "reinstalling" — the archive may still be cached CodeRabbit review on #1413: the warning claimed a re-download, but the check below skips `download_file` when the archive is still in `tools/`, in which case only the extract repeats. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01CfdhKY6DmrRJ6mzSTzLU58 --------- Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
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What
Removes every macOS-hosted GitHub Actions runner from the non-release CI paths. macOS artifacts are already cross-built from Linux, so nothing that ships is affected.
Changes
check-macos.yml— clippy +cargo testonmacos-latestfor every push and PR. Removed the badge fromREADME.md.main's only required status check isDylint, so no PR is left waiting on a check that can never report.platform-boundary-research.yml— dropped themacos-latestmatrix entry. The scanner walks source rather than expanded modules, so the same checkout yields the same union on any host;--host-labelis only a printed prefix.build.yml—aarch64-apple-darwinnow builds onubuntu-latestthrough the template'smac_cross_linuxbranch (soldr +cargo-zigbuild+ managed Apple SDK), matchingrelease-auto.yml. Themac_cross_linuxinput was never passed by this caller, so it is now wired into thewith:block.Release path unchanged
release-auto.ymlalready runs bothaarch64-apple-darwinandx86_64-apple-darwinonubuntu-latest— it had no mac runners to begin with, so no release capability is lost.Verification
(only a comment remains)
Manual build lane dispatched
build.ymlisworkflow_dispatch-only, so its newmac_cross_linuxlane does not run on this PR. Dispatched against the branch to prove it: https://github.com/FastLED/fbuild/actions/runs/33696939389🤖 Generated with Claude Code
https://claude.ai/code/session_01CfdhKY6DmrRJ6mzSTzLU58
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Build & CI
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