Split x64/arm64 builds into parallel stages#14497
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benhillis
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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_x64andbuild_arm64stages, and update test dependencies to only wait forbuild_x64. - Introduce a new
packagestage 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. |
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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
checksstage, 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
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added 4 commits
March 23, 2026 13:16
Restructure the CI pipeline to run x64 and arm64 builds in parallel,
allowing tests to start as soon as the x64 build finishes without
waiting for arm64.
Pipeline flow:
checks -> build_x64 -> test
-> build_arm64
Both builds -> package -> flight/nuget (release/nightly only)
Key changes:
- build-stage.yml: Split into checks, build_x64, and build_arm64
stages. Checks gate both builds. Builds run in parallel after
checks pass. PR and release use identical build steps (only
signing differs).
- package-stage.yml: New stage that downloads both platform
artifacts, creates msixbundle/appxupload, packs NuGet packages.
Only used in release/nightly pipelines.
- test-stage.yml: Depends on build_x64 only.
- TestGroup.xml.in: Tests install via x64 MSI instead of
msixbundle, removing the cross-platform dependency.
- test-setup.ps1: Support MSI install alongside existing MSIX.
- flight-stage.yml: Depends on test + package, downloads from
package stage artifact.
- nuget-stage.yml: Depends on package + test, downloads from
package stage artifact.
- PR pipelines don't include package stage (not needed).
- All consuming pipelines updated for new stage topology.
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Restructure the CI pipeline to run x64 and arm64 builds in parallel, allowing tests to start as soon as the x64 build finishes without waiting for arm64. This will speed up the PR pipeline by about 10 minutes.
Pipeline flow:
checks -> build_x64 -> test
-> build_arm64
Both builds -> package -> flight/nuget (release/nightly only)
Key changes: