NETSDK1195 error when building runtime in bootstrapping stage 2 build leg

[mthalman]

/vmr/.dotnet/sdk/8.0.100-preview.6.23301.1/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.Sdk.FrameworkReferenceResolution.targets(90,5): error NETSDK1195: Unable to optimize assemblies for size: a valid runtime package was not found. Either set the PublishTrimmed property to false, or use a supported target framework when publishing. [/vmr/src/runtime/artifacts/source-build/self/src/Build.proj]

Example build: https://dev.azure.com/dnceng/internal/_build/results?buildId=2192289&view=logs&j=4cede3bc-29a7-5d91-52ef-402f98629c03&t=dd97ae34-3027-5020-e259-ff298adf2f8e (internal link)

[mthalman]

This is caused by the changes in dotnet/sdk#32045

[mthalman]

@sbomer - To investigate, here's the link for the runtime binlog.

[sbomer]

This failure happens whenever the SDK tries to reference an ILLink pack that isn't supported for the target TFM. It could be caused by the line mentioned in dotnet/sdk#32045 (comment). When runtime picks up an SDK with my change, it needs to change the property name from _IsTrimmingEnabled to _RequiresILLinkPack.

Are there repro steps I can try out to validate a fix?

[sbomer]

Should be fixed with dotnet/runtime#87071. I'll leave this open until the fix is confirmed in source-build.

[MichaelSimons]

The fix flowed in with dotnet/installer#16621.