Unified-build lite pipeline

[NikolaMilosavljevic]

Validation of vmr changes does not always require running all unified-build legs. Having a lite pipeline could help improve throughput, and save build resources. This also enable us to validate legs that build tests, as those are now only enabled in public CI or PR.

Some concerns

Duplication of jobs for building tests - we already have them in Validation block right above -

sdk/eng/pipelines/templates/stages/vmr-build.yml

Lines 354 to 387 in d833ffb

	#### VERTICAL BUILD (Validation) ####
	- ${{ if and(not(parameters.isSourceOnlyBuild), or(eq(variables['Build.Reason'], 'PullRequest'), ne(variables['System.TeamProject'], 'internal'))) }}:
	- stage: VMR_Vertical_Build_Validation
	displayName: VMR Vertical Build Validation
	dependsOn: []
	variables:
	- template: ../variables/vmr-build.yml
	parameters:
	vmrBranch: ${{ parameters.vmrBranch }}
	jobs:
	- template: ../jobs/vmr-build.yml
	parameters:
	buildName: ${{ format('{0}_Ubuntu_BuildTests', variables.ubuntuName) }}
	isBuiltFromVmr: ${{ parameters.isBuiltFromVmr }}
	vmrBranch: ${{ variables.VmrBranch }}
	pool: ${{ parameters.pool_Linux }}
	container:
	name: ${{ variables.ubuntuContainerName }}
	image: ${{ variables.ubuntuContainerImage }}
	targetOS: linux
	targetArchitecture: x64
	extraProperties: /p:DotNetBuildTests=true
	- ${{ if ne(variables['Build.Reason'], 'PullRequest') }}:
	- template: ../jobs/vmr-build.yml
	parameters:
	buildName: Windows_BuildTests
	isBuiltFromVmr: ${{ parameters.isBuiltFromVmr }}
	vmrBranch: ${{ variables.VmrBranch }}
	pool: ${{ parameters.pool_Windows }}
	targetOS: windows
	targetArchitecture: x64
	extraProperties: /p:DotNetBuildTests=true

Perhaps I should just update that condition to include internal/lite scenario and update the comment.

Not sure if both Linux and Windows jobs for building tests would be required, or just one of them.

[NikolaMilosavljevic]

@mmitche

PR Overview

This PR introduces a unified-build lite pipeline to optimize VMR validations by running a reduced set of build legs, including additional jobs for building tests in internal builds.

• Added an internal lite build section with separate Linux and Windows test build jobs.
• Updated ci.yml conditions to support a unified-build-lite trigger.

Reviewed Changes

File	Description
eng/pipelines/templates/stages/vmr-build.yml	Adds additional jobs for internal lite test builds.
src/SourceBuild/content/eng/pipelines/ci.yml	Updates build scope conditions to include unified-build-lite.

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

[ViktorHofer]

I think it would be good to first open an issue to discuss and agree on the desired state.

[NikolaMilosavljevic]

I think it would be good to first open an issue to discuss and agree on the desired state.

Makes sense. I'll mark this as draft, and we can close it if needed.

[NikolaMilosavljevic]

I think it would be good to first open an issue to discuss and agree on the desired state.

dotnet/source-build#4934

[ViktorHofer]

Thanks @NikolaMilosavljevic