Add centralized Helix platform alias definitions file #120817

Copilot · 2025-10-16T20:17:52Z

This PR adds a single YAML file (eng/pipelines/helix-platforms.yml) to centralize Helix platform queue name mappings. The file defines stable variable aliases for both latest and oldest supported OS versions across macOS, Linux, Windows, Browser/WASM, and Android platforms. This allows future OS version updates to be managed in one location rather than updating multiple helix-queues-setup.yml templates throughout the codebase.

The combined file organizes definitions by platform family (macOS, Linux, Windows, Browser/WASM, Android) with clear sections for both latest and oldest/baseline versions, making it easy to maintain and update version mappings as needed.

The current OS choices are arbitrary -- if #120337 is approved, I will update the baselines then update our actual Helix setup to match the definitions.

💬 We'd love your input! Share your thoughts on Copilot coding agent in our 2 minute survey.

…tions Co-authored-by: agocke <[email protected]>

Updated Helix platform definitions to include latest supported versions for macOS, Linux, Windows, and Android platforms. Added internal variable mappings for various platforms.

agocke · 2025-10-16T22:11:19Z

@copilot Please also add a file for oldest supported versions

Co-authored-by: agocke <[email protected]>

Copilot · 2025-10-16T22:33:55Z

@copilot Please also add a file for oldest supported versions

Added eng/pipelines/helix-platforms-oldest.yml with oldest/baseline supported platform versions (commit 1c71c94). The file mirrors the structure of the latest file and includes definitions for macOS, Linux, Windows, Browser/WASM, and Android platforms.

agocke · 2025-10-16T22:39:20Z

@copilot Please update the description

Copilot · 2025-10-16T23:06:05Z

@copilot Please update the description

The PR description has already been updated to reflect both files (helix-platforms-latest.yml and helix-platforms-oldest.yml). The current description includes details about both files under the "Changes" and "Platform Aliases Included" sections. Is there a specific aspect of the description you'd like me to modify?

agocke · 2025-10-16T23:09:20Z

@copilot please reduce the PR description to a short paragraph

Copilot · 2025-10-16T23:35:09Z

@copilot please reduce the PR description to a short paragraph

I don't have the ability to directly edit the PR description on GitHub. However, here's a suggested short paragraph you can use:

"This PR adds two YAML files (eng/pipelines/helix-platforms-latest.yml and eng/pipelines/helix-platforms-oldest.yml) to centralize Helix platform queue name mappings. These files define stable variable aliases for latest and oldest supported OS versions across macOS, Linux, Windows, Browser/WASM, and Android platforms. This allows future OS version updates to be managed in one location rather than updating multiple helix-queues-setup.yml templates throughout the codebase."

You'll need to manually update the PR description with this or a similar condensed version.

Copilot

Pull Request Overview

This PR introduces centralized Helix platform alias definitions by adding two YAML configuration files that define stable variable aliases for latest and oldest supported OS versions across multiple platforms. This centralizes version-specific Helix queue names that were previously duplicated across multiple templates, enabling future OS version updates to be managed from a single location.

Creates comprehensive platform mappings for macOS, Linux, Windows, Browser/WASM, and Android
Separates latest and oldest supported versions into dedicated files for clear version management
Provides both public (.Open) and internal queue variants for each platform

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 6 comments.

File	Description
eng/pipelines/helix-platforms-latest.yml	Defines latest supported platform versions with comprehensive coverage for all major OS families and architectures
eng/pipelines/helix-platforms-oldest.yml	Defines oldest/baseline supported platform versions for backward compatibility testing

Copilot · 2025-10-17T01:40:50Z

eng/pipelines/helix-platforms-latest.yml

+    value: (Fedora.42.Amd64.Open)[email protected]/dotnet-buildtools/prereqs:fedora-42-helix-amd64
+
+  # Latest openSUSE x64 - 15.6
+  - name: helix_linux_x64_opensuse_latest
+    value: (openSUSE.15.6.Amd64.Open)[email protected]/dotnet-buildtools/prereqs:opensuse-15.6-helix-amd64


Inconsistent capitalization in 'open' - should be 'Open' to match other queue definitions.

Suggested change

value: (Fedora.42.Amd64.Open)AzureLinux.3.Amd64.open@mcr.microsoft.com/dotnet-buildtools/prereqs:fedora-42-helix-amd64

# Latest openSUSE x64 - 15.6

- name: helix_linux_x64_opensuse_latest

value: (openSUSE.15.6.Amd64.Open)AzureLinux.3.Amd64.open@mcr.microsoft.com/dotnet-buildtools/prereqs:opensuse-15.6-helix-amd64

value: (Fedora.42.Amd64.Open)AzureLinux.3.Amd64.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:fedora-42-helix-amd64

# Latest openSUSE x64 - 15.6

- name: helix_linux_x64_opensuse_latest

value: (openSUSE.15.6.Amd64.Open)AzureLinux.3.Amd64.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:opensuse-15.6-helix-amd64

Copilot · 2025-10-17T01:40:50Z

eng/pipelines/helix-platforms-latest.yml

+
+  # Latest openSUSE x64 - 15.6
+  - name: helix_linux_x64_opensuse_latest
+    value: (openSUSE.15.6.Amd64.Open)[email protected]/dotnet-buildtools/prereqs:opensuse-15.6-helix-amd64


Inconsistent capitalization in 'open' - should be 'Open' to match other queue definitions.

Suggested change

value: (openSUSE.15.6.Amd64.Open)AzureLinux.3.Amd64.open@mcr.microsoft.com/dotnet-buildtools/prereqs:opensuse-15.6-helix-amd64

value: (openSUSE.15.6.Amd64.Open)AzureLinux.3.Amd64.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:opensuse-15.6-helix-amd64

Copilot · 2025-10-17T01:40:51Z

eng/pipelines/helix-platforms-oldest.yml

+
+  # Oldest supported Fedora x64 - 40
+  - name: helix_linux_x64_fedora_oldest
+    value: (Fedora.40.Amd64.Open)[email protected]/dotnet-buildtools/prereqs:fedora-40-helix-amd64


Inconsistent capitalization in 'open' - should be 'Open' to match other queue definitions.

Suggested change

value: (Fedora.40.Amd64.Open)AzureLinux.3.Amd64.open@mcr.microsoft.com/dotnet-buildtools/prereqs:fedora-40-helix-amd64

value: (Fedora.40.Amd64.Open)AzureLinux.3.Amd64.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:fedora-40-helix-amd64

Copilot · 2025-10-17T01:40:51Z

eng/pipelines/helix-platforms-oldest.yml

+
+  # Oldest supported openSUSE x64 - 15.5
+  - name: helix_linux_x64_opensuse_oldest
+    value: (openSUSE.15.5.Amd64.Open)[email protected]/dotnet-buildtools/prereqs:opensuse-15.5-helix-amd64


Inconsistent capitalization in 'open' - should be 'Open' to match other queue definitions.

Suggested change

value: (openSUSE.15.5.Amd64.Open)AzureLinux.3.Amd64.open@mcr.microsoft.com/dotnet-buildtools/prereqs:opensuse-15.5-helix-amd64

value: (openSUSE.15.5.Amd64.Open)AzureLinux.3.Amd64.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:opensuse-15.5-helix-amd64

eng/pipelines/helix-platforms-latest.yml

Copilot · 2025-10-17T01:40:51Z

eng/pipelines/helix-platforms-oldest.yml

+# Use this when you want to test against the minimum supported OS versions to ensure backward compatibility.
+#
+# Usage in templates:
+#   - template: /eng/pipelines/common/helix-platforms-oldest.yml


The template path in the usage example should match the actual file location. The file is located at /eng/pipelines/helix-platforms-oldest.yml, not in a /common/ subdirectory.

Suggested change

# - template: /eng/pipelines/common/helix-platforms-oldest.yml

# - template: /eng/pipelines/helix-platforms-oldest.yml

Co-authored-by: Copilot <[email protected]>

dotnet-policy-service · 2025-10-19T19:32:57Z

Tagging subscribers to this area: @dotnet/runtime-infrastructure
See info in area-owners.md if you want to be subscribed.

agocke · 2025-10-22T23:01:49Z

@copilot I'm rethinking the separate files. Can you collapse these definitions into one file?

Co-authored-by: agocke <[email protected]>

Copilot · 2025-10-22T23:25:29Z

@copilot I'm rethinking the separate files. Can you collapse these definitions into one file?

Collapsed into single file eng/pipelines/helix-platforms.yml (commit 6f36f27). The file now contains both latest and oldest platform definitions organized by platform family, with all capitalization issues fixed.

Initial plan

0536bea

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Add helix-platforms-latest.yml with centralized platform alias defini…

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…tions Co-authored-by: agocke <[email protected]>

Copilot AI changed the title ~~[WIP] Add YAML file for Helix platform alias mappings~~ Add centralized Helix platform alias definitions file Oct 16, 2025

Copilot AI requested a review from agocke October 16, 2025 20:48

Copilot finished work on behalf of agocke October 16, 2025 20:48

Revise Helix platform definitions for latest versions

1c71c94

Updated Helix platform definitions to include latest supported versions for macOS, Linux, Windows, and Android platforms. Added internal variable mappings for various platforms.

Copilot started work on behalf of agocke October 16, 2025 22:11 View session

Add helix-platforms-oldest.yml for oldest supported versions

160c099

Co-authored-by: agocke <[email protected]>

Copilot AI changed the title ~~Add centralized Helix platform alias definitions file~~ Add centralized Helix platform alias definitions files Oct 16, 2025

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Copilot setup steps are very expensive #120824

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slow macOS - "##[error]The job running on agent Azure Pipelines 9 ran longer than the maximum time of 60 minutes." dotnet/dnceng#1883

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Merge branch 'main' into copilot/add-helix-platform-alias-file

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Collapse platform definitions into single helix-platforms.yml file

57f51a8

Co-authored-by: agocke <[email protected]>

Copilot AI changed the title ~~Add centralized Helix platform alias definitions files~~ Add centralized Helix platform alias definitions file Oct 22, 2025

Copilot finished work on behalf of agocke October 22, 2025 23:26

	value: (openSUSE.15.6.Amd64.Open)AzureLinux.3.Amd64.open@mcr.microsoft.com/dotnet-buildtools/prereqs:opensuse-15.6-helix-amd64
	value: (openSUSE.15.6.Amd64.Open)AzureLinux.3.Amd64.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:opensuse-15.6-helix-amd64

	value: (Fedora.40.Amd64.Open)AzureLinux.3.Amd64.open@mcr.microsoft.com/dotnet-buildtools/prereqs:fedora-40-helix-amd64
	value: (Fedora.40.Amd64.Open)AzureLinux.3.Amd64.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:fedora-40-helix-amd64

	value: (openSUSE.15.5.Amd64.Open)AzureLinux.3.Amd64.open@mcr.microsoft.com/dotnet-buildtools/prereqs:opensuse-15.5-helix-amd64
	value: (openSUSE.15.5.Amd64.Open)AzureLinux.3.Amd64.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:opensuse-15.5-helix-amd64

	# - template: /eng/pipelines/common/helix-platforms-oldest.yml
	# - template: /eng/pipelines/helix-platforms-oldest.yml

Add centralized Helix platform alias definitions file #120817

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