Fold the Windows native-recipe smoke job into the gate job - #690
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`windows-native-recipe-smoke` was a second job that `needs`-ed `build-test-windows`, so it was a strict serial tail on every pull request. Measured over the 57 Windows runs between run 33890685806 and run 34064668331, it cost a median of 236s: restore gate caches 72s set up Rust 20s Build Netsuke 109s Exercise native recipes 7s Only the last of those is the work it exists for. The 109s rebuilt a binary `build-test-windows` had already compiled, and the dependency bought cache warmth rather than correctness: the job was restore-only, and on a pull request the gate job saves nothing for it to read. So it becomes two `shell: pwsh` steps at the end of the gate job, after `Test`. `Build Netsuke` links against the workspace that step compiled rather than rebuilding the graph, and the checkout, cache restore and Rust setup disappear with the job. The contract this job existed to hold is unchanged. What it proves is that a PowerShell-launched Netsuke directs Ninja legacy recipes to the PowerShell interpreter (#599), and the process that launches Netsuke is pwsh either way; `Lint (Whitaker)` already overrides the job's Git Bash default the same way. Two new contracts in ci_windows_job_test.py hold the shape, both mutation-tested. One asserts that each folded step declares `pwsh` and invokes the command it exists to run, and that both follow `Test`; it fails when the shell is dropped while the comment and step name stay, when the smoke invocation is replaced, and when the steps move ahead of `Test`. The other asserts `ci-windows.yml` declares no second job, and fails when one is reinstated. `release.yml` keeps its own smoke job, which has no gate build to share. Towards #673.
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Reviewer's GuideThe PR eliminates the serial pull-request Windows smoke job by running its native-recipe build and fixture as ordered pwsh steps in the existing Windows gate, preserving the PowerShell contract while removing redundant setup and updating documentation and workflow invariants. Sequence diagram for the folded Windows native-recipe smoke gatesequenceDiagram
participant Gate as build-test-windows
participant Cargo as cargo
participant Pwsh as pwsh
participant Smoke as windows-recipe-smoke.ps1
participant Ninja as Ninja
Gate->>Cargo: cargo build --locked --bin netsuke
Cargo-->>Gate: target/debug/netsuke.exe
Gate->>Pwsh: shell: pwsh
Pwsh->>Smoke: windows-recipe-smoke.ps1 -Netsuke -Manifest
Smoke->>Ninja: Run native recipe fixture
Ninja-->>Smoke: PowerShell recipe behavior
Smoke-->>Gate: Smoke result
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Summary
Testing
WalkthroughConsolidate the Windows native-recipe smoke test into ChangesWindows CI consolidation
Poem
Merge Risk: 🔵 Low · up to The Windows smoke coverage is consolidated into the gate job, but its new contract can miss regressions where the expected PowerShell commands are commented out or altered. This is a bounded CI-regression-protection risk that should be tightened before merge. 🚥 Pre-merge checks | ✅ 15✅ Passed checks (15 passed)
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Inline comments:
In `@tests/workflow_contracts/ci_windows_job_test.py`:
- Around line 313-317: Update the assertions around the missing-fragments check
in the workflow contract test to normalize each run block into non-comment
PowerShell command lines and assert against executable command lines rather than
arbitrary substrings. Ensure commented-out or modified commands such as the
expected cargo build invocation do not satisfy the check, while preserving the
existing step-specific validation.
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.github/workflows/ci-windows.ymldocs/developers-guide.mdtests/workflow_contracts/cache_contract_data.pytests/workflow_contracts/ci_windows_job_test.pytests/workflow_contracts/runner_placement_invariants.pytests/workflow_contracts/runner_placement_test.pytests/workflow_contracts/sccache_contract_test.py
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Adding two contracts took ci_windows_job_test.py to 425 lines, past the 400-line file limit AGENTS.md sets for every file in the repository, and pylint failed the Linux gate on it (run 34084619736). My local pass ran lint-clippy rather than the full lint suite, which is why CI found this and I did not. The two smoke contracts move to ci_windows_smoke_test.py with their own fixture, leaving 351 and 108 lines. Both mutation cases were re-run against the extracted module: the shell drop, the replaced smoke invocation and the reinstated second job all still fail as they should.
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Run 34085924383 shows Build Netsuke taking 107s inside the gate job, not the near-zero I claimed. The reason is feature resolution: make test compiles with --all-features, while the smoke test needs the default-feature binary users get, so Cargo's fingerprints differ and the graph rebuilds through the compiler cache. That is the same 107s the separate job spent (109s median), so the build did not get cheaper. What the fold removes is the checkout, cache restore, Rust setup and job overhead around it: about 127s per run and one hosted runner, not the 200s to 230s I estimated. Passing --all-features here would reuse the artefacts and take the step close to zero, at the cost of smoke-testing a binary carrying legacy-digests rather than the shipped default. That trade is recorded in the workflow and the guide rather than made.
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CodeRabbit is right that the substring check was too weak: a run block that comments out cargo build --locked --bin netsuke satisfied it while building nothing, and so would a command altered to keep the expected text. The assertion now normalises each run block to its non-blank, non-comment lines and requires the expected command to start one. Three mutations were run against it and all three now fail as they should: commenting out the cargo build, commenting out the smoke script, and prefixing the build with echo so it no longer executes. The first is the exact case raised.
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Towards #673. Second of three changes aimed at the Windows gate's wall clock;
#687 is the first.
windows-native-recipe-smokewas a second job thatneeds-edbuild-test-windows, which made it a strict serial tail on every pull request.This folds it into the gate job as two
shell: pwshsteps.What it cost
Measured over the 57 successful Windows gate runs between run 33890685806, the
#664 merge, and run 34064668331.
Seven seconds of that is the work the job exists for. The 109s rebuilt a binary
build-test-windowshad already compiled, and everything above it was setupfor a job that did not need to exist.
Why the dependency was safe to remove
The
needsbought cache warmth, not correctness. The job was restore-only:build-test-windowsis the single writer for both Windows key families, and ona pull request it saves nothing, so there was never a generation for the smoke
job to wait for. No contract asserted the dependency, and
mainhas no branchprotection listing the job as a required check.
Why folding is as faithful as the separate job
What the smoke test proves is that a PowerShell-launched Netsuke directs Ninja
legacy recipes to the PowerShell interpreter selected by the Windows contract
(#599). The process that launches Netsuke is
pwsheither way. The separatejob got that from a job-level
defaults.run.shell: pwsh; the folded steps getit from
shell: pwshon each step, which is exactly howLint (Whitaker)already runs in this job. The fixture, the binary path and the manifest are
unchanged.
release.ymlkeeps its own standalone smoke job. It builds the tagged sourceand has no gate build to share, so the same argument does not apply there.
Contracts
Two new tests in
tests/workflow_contracts/ci_windows_job_test.py, bothmutation-tested rather than merely written:
test_windows_job_runs_the_native_recipe_smoke_after_the_test_gateassertsthat each folded step declares
pwsh, invokes the command it exists to run,and follows
Test. It was proved to fail on three separate mutations: droppingshell: pwshwhile keeping the step name and its explanatory comment,replacing the smoke invocation with a no-op while keeping the step name, and
moving the steps ahead of
Test.test_windows_workflow_declares_no_second_jobassertsci-windows.ymldeclares only the gate job, and was proved to fail when a second job is
reinstated.
The first mutation is the one that matters: a name-matching assertion would
have passed with the shell deleted, testing nothing.
Five contract tables lose their
ci-windows.ymlsmoke entries and keep theirrelease.ymlones: the sccache local-directory, wrapper and setup-rustdelegation inventories, the cache-action callers map, and the read-only smoke
profile list, plus the runner-placement assignments.
What it actually saved, and a correction
Run 34085924383 is this branch's own
windows-latestgate, green, with thesteps folded in:
The build did not get cheaper, and I predicted that it would.
make testcompiles with
--all-features; the smoke test needs the default-feature binaryusers actually get, so Cargo's fingerprints differ and the graph is rebuilt
through the compiler cache rather than reused. The step recompiles from
proc-macro2upward, exactly as the separate job did.So the saving is the job overhead, not the build: the checkout, the 72s cache
restore, the 20s Rust setup, the runner start and the post steps. That is about
127s per run and one hosted Windows runner, not the 200s to 230s I
estimated when proposing this. The estimate is corrected in the workflow
comment, the developers' guide and commit 8d1b7db rather than quietly left to
stand.
There is a further 107s available, and I have not taken it. Passing
--all-featuresto this step would reuse the artefactsmake testjust builtand take it close to zero. It would also mean smoke-testing a binary carrying
legacy-digestsinstead of the shipped default, and this lane is recorded inthe developers' guide as testing the default feature set. That is a trade
between fidelity and 107s that belongs to whoever owns the contract, so it is
documented in both places and left unmade. Say the word and it is a two-line
change.
Evidence
Local gates, all run bare and all green:
check-fmt,lint(Clippy, Whitaker,Ruff, Pylint, the df12 house lints, ambrleaks and actionlint),
markdownlintwith spelling,
typecheck,doc-coverage,test-workflow-contractsat 285passed, and
make testat 2802 of 2802 passed.The first push failed the Linux gate: two added contracts took
ci_windows_job_test.pyto 425 lines, past the 400-line file limit AGENTS.mdsets, and Pylint caught it (run 34084619736). My local pass had run
lint-clippyrather than the fulllintsuite, which is why CI found it and Idid not. The contracts moved to their own module in 6f1db0b, leaving 351 and
108 lines, and all three mutation cases were re-run against the extracted
module.
Summary by Sourcery
Fold the Windows native-recipe smoke test into the Windows gate job to remove redundant pull-request job overhead without changing the smoke-test contract.
Enhancements:
CI:
Documentation:
Tests: