/__w/1/s/eng/tools/tasks/Microsoft.DotNet.UnifiedBuild.MSBuildSdkResolver/Microsoft.DotNet.UnifiedBuild.MSBuildSdkResolver.csproj : error NU1103: Unable to find a stable package Microsoft.Build.Tasks.Core with version (>= 17.14.7)
/__w/1/s/eng/tools/tasks/Microsoft.DotNet.UnifiedBuild.MSBuildSdkResolver/Microsoft.DotNet.UnifiedBuild.MSBuildSdkResolver.csproj : error NU1103:   - Found 5 version(s) in /__w/1/s/prereqs/packages/previously-source-built/ [ Nearest version: 17.15.0-preview-25225-08 ]
/__w/1/s/eng/tools/tasks/Microsoft.DotNet.UnifiedBuild.MSBuildSdkResolver/Microsoft.DotNet.UnifiedBuild.MSBuildSdkResolver.csproj : error NU1103:   - Found 0 version(s) in /__w/1/s/prereqs/packages/prebuilt/

I think this means that

@MichaelSimons any ideas?

The imports happen in the init-source-build phase before the PSB tarball is extracted therefore the PSB.versions.props doesn't get applied. Possible solutions:

1. Is it feasible/possible to do re-import the sdk.props after the PSB initialization before BuildMSBuildSdkResolver?
2. Define the MSBuildSdkResolver proj to explicitly depend on the version from psb for SB.
3. Add the new version to SBRP and rebootstrap.

Thanks. I just pushed a commit that fixes that. The sequence was already correct (the msbuildsdkresolver evaluates, restores and builds after the PSB archive is extracted) but there was an import mistake. The PreviouslySourceBuiltPackageVersionsPropsFile pointed to the wrong location because VmrLayout.props was imported too late.

The non-source-build jobs should be unblocked now but source-build ones need an update to use PSB to avoid prebuilts.

@dotnet/source-build can you please help with the SB test failures? TIA

@dotnet/source-build can you please help with the SB test failures? TIA

Yes - @mthalman is already investigating.

The SB leg is getting failures in the test step like the following:

/__w/1/s/eng/tools/tasks/Microsoft.DotNet.UnifiedBuild.Tasks/Microsoft.DotNet.UnifiedBuild.Tasks.csproj error NU1102: Unable to find package Microsoft.Build.Tasks.Core with version (>= 17.15.0-preview-25230-108)
  - Found 67 version(s) in dotnet-public [ Nearest version: 17.14.8 ]
  - Found 1 version(s) in dotnet-eng [ Nearest version: 16.5.0-preview-19606-01 ]
  - Found 0 version(s) in dotnet-libraries [/__w/1/s/.dotnet/sdk/10.0.100-preview.5.25230.108/NuGet.targets]

This is because it's picking up the PSB version but there's no PSB feed defined.

Just to summarize, this change also discovered two regression that are getting fixed:

• The path to the PSB versions file was incorrect due to recent publishing refactoring of properties
• The PSB versions import wasn't conditioned out when running tests while the PSB feed was.