ci: run package tests only for packages a change can affect - #13118
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swift-package-tests ran all 30 packages on every macOS-routed run, about 13 minutes of swift test, although most changes touch none of them. A package's tests can change outcome only when the package, a package it depends on by path (transitively), a declared extra input, or the test job itself changes. scripts/ci/select_package_tests.py reads those path dependencies from each Package.swift and picks the affected packages from the commit's diff against its first parent. Unknown paths, a missing parent and dispatches select every package. The Bonsplit tests follow vendor/bonsplit the same way, the nucleo FFI build runs only when CmuxCommandPalette is selected, and CmuxBrowser is no longer listed twice. Against the 182 macOS-routed pull requests merged in the last 7 days this selects no package for 64% of them and 19% of the package test work overall. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
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Included review availability: Your plan provides up to 10 included reviews per hour; 4 remain after this review. 📝 WalkthroughWalkthroughThe pull request adds changed-file package selection for Swift package tests. CI derives changed files, selects affected packages, gates Bonsplit tests, and builds the Nucleo library only when ChangesPackage test selection
Priority: ⬇️ Low Estimated code review effort: 3 (Moderate) | ~25 minutes Change: Feature Sequence Diagram(s)sequenceDiagram
participant GitHubActions
participant select_package_tests.py
participant SwiftPackageTests
GitHubActions->>GitHubActions: Diff HEAD^1 and HEAD
GitHubActions->>select_package_tests.py: Pass changed file list and package list
select_package_tests.py->>GitHubActions: Print selected packages
GitHubActions->>SwiftPackageTests: Run selected package tests
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- 🪄 Fix CodeRabbit comments on this PR
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In @.github/workflows/ci.yml:
- Line 2000: Update the Bonsplit path matching in the CI workflow condition to
use the boundary-aware pattern ^vendor/bonsplit(/|$), matching both the exact
gitlink path and descendants. In scripts/ci/select_package_tests.py, update both
selector checks to treat path == prefix.rstrip("/") as a match so an exact
Bonsplit path selects only affected packages.
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.github/workflows/ci.ymlscripts/ci/select_package_tests.pytests/test_ci_select_package_tests.py
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git diff --name-only reports only a rename's destination, so a file moved out of a package did not select that package. --no-renames lists both paths. vendor/bonsplit is a submodule, so a revision bump appears as the bare path. The Bonsplit test step only matched paths below it and would have skipped, and the selector treated the bare path as unknown. Both now match the directory itself as well as files under it. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
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teamleaderleo
enabled auto-merge (squash)
September 20, 2026 04:18
Keeps both new guard steps. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
This was referenced Sep 20, 2026
teamleaderleo
added this pull request to the merge queue
Sep 20, 2026
This was referenced Sep 20, 2026
Fails: run_with_timeout.py, install-zig-ci.sh and build-ghostty-cli-helper.sh are run by the job but classified as unrelated. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
| script = ROOT / pending.pop() | ||
| if not script.is_file(): | ||
| continue | ||
| for name in re.findall(r"\$script_dir/([A-Za-z0-9_.-]+\.(?:sh|py))", script.read_text(encoding="utf-8")): |
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The new regression guard only follows helpers referenced as lowercase $script_dir/<name>, but the job also invokes helpers through uppercase $SCRIPT_DIR. For example, install-zig-ci.sh and build-ghostty-cli-helper.sh source scripts/ghostty-zig-version.sh, and download-prebuilt-ghosttykit.sh invokes scripts/validate-xcframework-archive.py. Neither helper is in GLOBAL_INPUTS, so changing one can select no packages even though it changes the toolchain or artifact preparation used by this job, while this guard still passes. Expand discovery to cover these actual invocation forms and include every discovered input in GLOBAL_INPUTS.
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Sep 20, 2026
9da8b07 ci: run package tests only for packages a change can affect (manaflow-ai#13118) 1cd76eb ci: stop pull requests evicting the main cache seeds, and add an optional Warp cache store (manaflow-ai#13160) bd65a8a ci: optional compile-only pull request runs, and fail-fast merge groups (manaflow-ai#13117) 5517d3d test: preserve native terminal scrollbar visibility (manaflow-ai#12977) aa45187 Clarify shared Max RAM and vCPU allowance (manaflow-ai#13159)
This was referenced Sep 20, 2026
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Summary
swift-package-testsranswift testfor all 30 listed packages on every macOS-routed run, about 13 of the job's 17 minutes, although most changes touch none of them.scripts/ci/select_package_tests.pypicks the packages a change can affect: the package itself, every package that depends on it by path (transitively, read from eachPackage.swift), and declared extra inputs (Native/CommandPaletteNucleoFFI/forCmuxCommandPalette). The job's own inputs (ci.yml, the scripts its test steps call,.xcode-version, theghosttyrevision) select everything, and so does any path the script does not know.vendor/bonsplitthe same way, the nucleo FFIcargo buildruns only whenCmuxCommandPaletteis selected, andCmuxBrowseris no longer listed (and tested) twice.release-builddownloads.Measured
Replayed against the 182 macOS-routed pull requests merged in the last 7 days: 117 (64%) select no package, 23 select 1 to 5, 14 select 6 to 29, 28 select all 30. That is 19% of today's package test work. A
CmuxFoundationchange still runs its 14 dependents.Testing
tests/test_ci_select_package_tests.py(wired intoworkflow-guard-tests): transitive dependents across group folders, path dependencies outsidePackages/, extra inputs, unknown paths and unknown diffs failing safe, a listed package that does not exist failing, and the workflow's own list resolving with no duplicates. PASS on Python 3.9 and 3.12.tests/test_ci_change_areas.py: PASS.actionlintclean.ci.yml, so its own run selects every package; the first real selection happens on the next package-free pull request after merge.Issues
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@codesmith-botwith what you need. Autofix is disabled.Summary by cubic
Runs
swift-package-testsonly for packages a change can affect, cutting package-test time from about 13 minutes to near zero on most macOS-routed runs.Behavior
scripts/ci/select_package_tests.pypicks affected packages by following path dependencies transitively through the diff against the commit's first parent.vendor/bonsplitthe same way; the nucleo FFI build runs only whenCmuxCommandPaletteis selected, andCmuxBrowseris no longer tested twice.git diff --no-renameskeeps a moved file selecting the package it left, and avendor/bonsplitrevision bump (the bare directory path) selects the Bonsplit tests.release-buildto download.ci.yml, its own run still tests every package.Testing
Packages/, extra inputs, bare submodule paths, rename handling, and fail-safe selection.Written for commit b6b9c36. Summary will update on new commits.
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Tests