Split x64/arm64 builds into parallel pipeline stages by benhillis · Pull Request #14497 · microsoft/WSL

benhillis · 2026-03-21T04:57:49Z

Restructure the CI/CD pipeline to build x64 and arm64 in parallel instead of sequentially, reducing end-to-end build time.

Pipeline shapes

PR: build_x64 ∥ build_arm64 → test (tests use installer.msix directly)
Nightly: build_x64 ∥ build_arm64 → package → test (dev-cert signed bundle)
Release: build_x64 ∥ build_arm64 → package → test (ESRP-signed bundle)

Key changes

Extract shared build-job.yml template parameterized by platform
Add package-stage.yml that creates msixbundle from both platform artifacts, ESRP-signs for release, dev-cert signs for nightly
PR tests run immediately after x64 build using installer.msix (no package stage, no bundle needed)
Release/nightly tests wait for the package stage and test the real signed bundle that gets published
CloudTest configs are parameterized: release tests pull the bundle from the [package] artifact, PR tests use installer.msix from [drop]
arm64 + formatting checks always run in parallel with x64 but don't block the PR test gate
CodeQL runs in the arm64 stage (off the critical path)
flight-stage and nuget-stage updated for new stage names

Copilot

Pull request overview

This PR restructures the Azure Pipelines build flow to run x64 and arm64 builds in parallel so test execution can start as soon as the x64 build finishes, while packaging waits for both architectures.

Changes:

Split the monolithic build stage into parallel build_x64 and build_arm64 stages, and update test dependencies to only wait for build_x64.
Introduce a new package stage to produce the msixbundle/appxupload and NuGet artifacts after both builds complete.
Update CloudTest setup to install and test using the x64 MSI instead of the combined msixbundle.

Reviewed changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
tools/test/test-setup.ps1	Adds MSI install/uninstall support alongside existing MSIX setup logic for tests.
cloudtest/TestGroup.xml.in	Switches CloudTest inputs from msixbundle to x64 MSI.
.pipelines/build-stage.yml	Splits build into parallel x64/arm64 stages and updates artifact outputs.
.pipelines/package-stage.yml	New packaging stage to bundle outputs from both builds and create NuGet/appxupload artifacts.
.pipelines/test-stage.yml	Makes tests depend only on `build_x64`.
.pipelines/flight-stage.yml	Updates flight stage dependencies and artifact source to the new package stage.
.pipelines/nuget-stage.yml	Updates NuGet publish stage to depend on/package artifacts from the new package stage.
.pipelines/wsl-build-pr.yml	Wires the new package stage into the PR pipeline.
.pipelines/wsl-build-pr-onebranch.yml	Wires the new package stage into the OneBranch PR pipeline.
.pipelines/wsl-build-nightly-onebranch.yml	Wires the new package stage into the nightly OneBranch pipeline.
.pipelines/wsl-build-release-onebranch.yml	Wires the new package stage into the release OneBranch pipeline.

.pipelines/build-stage.yml

.pipelines/package-stage.yml

.pipelines/flight-stage.yml

Copilot

Pull request overview

Copilot reviewed 9 out of 9 changed files in this pull request and generated 2 comments.

Comments suppressed due to low confidence (1)

.pipelines/build-stage.yml:60

In the new checks stage, the first job is declared as - job: without an identifier. Azure Pipelines requires each job to have a name (e.g., job: checks) and this will fail YAML compilation as-is.

    jobs:
      - job:

        displayName: "Formatting & localization checks"
        timeoutInMinutes: 30

.pipelines/build-stage.yml

Copilot

Pull request overview

Copilot reviewed 9 out of 9 changed files in this pull request and generated 1 comment.

tools/test/test-setup.ps1

Copilot

Pull request overview

Copilot reviewed 9 out of 9 changed files in this pull request and generated 5 comments.

cloudtest/TestGroup.xml.in

.pipelines/build-stage.yml

.pipelines/flight-stage.yml

tools/test/test-setup.ps1

cloudtest/TestGroup.xml.in

Copilot

Pull request overview

Copilot reviewed 8 out of 8 changed files in this pull request and generated 5 comments.

.pipelines/build-stage.yml

cloudtest/TestGroup.xml.in

.pipelines/build-stage.yml

Copilot

Pull request overview

Copilot reviewed 8 out of 8 changed files in this pull request and generated 1 comment.

.pipelines/build-stage.yml

Copilot

Pull request overview

Copilot reviewed 7 out of 7 changed files in this pull request and generated 2 comments.

.pipelines/build-job.yml

.pipelines/package-stage.yml

Copilot

Pull request overview

Copilot reviewed 12 out of 12 changed files in this pull request and generated 1 comment.

.pipelines/build-job.yml

Copilot

Pull request overview

Copilot reviewed 8 out of 8 changed files in this pull request and generated 3 comments.

.pipelines/test-stage.yml

cloudtest/TestGroup.xml.in

.pipelines/build-stage.yml

Copilot

Pull request overview

Copilot reviewed 8 out of 8 changed files in this pull request and generated 2 comments.

.pipelines/test-stage.yml

cloudtest/TestGroup.xml.in

Restructure the CI/CD pipeline to build x64 and arm64 in parallel instead of sequentially, reducing end-to-end build time. Pipeline shapes: - PR: build_x64 ∥ build_arm64 → test (uses installer.msix directly) - Nightly: build_x64 ∥ build_arm64 → package → test (dev-cert bundle) - Release: build_x64 ∥ build_arm64 → package → test (ESRP-signed bundle) Key changes: - Extract shared build-job.yml template parameterized by platform - Add package-stage.yml that creates msixbundle from both platform artifacts, ESRP-signs for release, dev-cert signs for nightly - PR tests run immediately after x64 build using installer.msix (no package stage, no bundle needed) - Release/nightly tests wait for the package stage and test the real signed bundle that gets published - CloudTest configs are parameterized: release tests pull the bundle from the [package] artifact, PR tests use installer.msix from [drop] - arm64 + formatting checks always run in parallel with x64 but don't block the PR test gate - CodeQL runs in the arm64 stage (off the critical path) - flight-stage and nuget-stage updated for new stage names

Copilot

Pull request overview

Copilot reviewed 11 out of 11 changed files in this pull request and generated 2 comments.

cloudtest/CMakeLists.txt

benhillis requested a review from a team as a code owner March 21, 2026 04:57

benhillis requested review from Brian-Perkins, OneBlue, Copilot, jstarks and justus-camp-microsoft March 21, 2026 04:57

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benhillis marked this pull request as ready for review March 31, 2026 19:35

formatting

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benhillis commented Mar 21, 2026 •

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