vmr main fails to build with NU1109 errors while building roslyn

[tmds]

For example https://dev.azure.com/dnceng-public/public/_build/results?buildId=1033347&view=logs&jobId=609589e2-4f74-5576-cdb7-914bcaea778b&j=609589e2-4f74-5576-cdb7-914bcaea778b&t=8309e960-3e55-5314-da53-c9e47ab6c0d0

cc @ViktorHofer @MichaelSimons

[ViktorHofer]

dotnet/dotnet#176 takes care of that by disabling package pruning in roslyn until they resolved the warnings.

[filipnavara]

I think I see the same errors for linux-riscv builds: https://github.com/filipnavara/dotnet-riscv/actions/runs/14861023608/job/41725646682

[ViktorHofer]

OK damn. I misread. This is about NU1109 detected package downgrade, not package pruning.

[ViktorHofer]

[error]src/roslyn/src/RoslynAnalyzers/Microsoft.CodeAnalysis.AnalyzerUtilities/Microsoft.CodeAnalysis.AnalyzerUtilities.csproj(0,0): error NU1109: (NETCORE_ENGINEERING_TELEMETRY=Restore) Detected package downgrade: System.Collections.Immutable from 10.0.0-preview.4.25225.6 to centrally defined 10.0.0-ci. Update the centrally managed package version to a higher version.

@mthalman @ellahathaway I think you saw similar issues. Can you please take a look?

[tmds]

CI for main also fails due to this reason: https://github.com/dotnet/dotnet/runs/41767545959.

[mthalman]

Closing as duplicate of #5061. Workaround is to set /p:EnableDevBuildAsDefaultForSourceOnly=false /p:DisableDevBuildAsDefaultForSourceOnly=true (see #5135 (comment)) if you want a non-official build or /p:OfficialBuildId=<value> if you want an official build. Also related to #4975.