[mono] Linux ppc64le and s390x packs are missing

[matouskozak]

Recent builds of Mono Linux s390x and ppc64le are failing with

Unable to find package Microsoft.NETCore.App.Host.linux-s390x

Unable to find package Microsoft.NETCore.App.Host.linux-ppc64le.

https://dev.azure.com/dnceng-public/public/_build/results?buildId=1496512&view=logs&s=6884a131-87da-5381-61f3-d7acc3b91d76&j=7ea23876-d932-5222-06a0-de72daa3cbf4

Build error:

2026-07-08T07:07:39.3389961Z /__w/1/s/src/installer/tests/Microsoft.NET.HostModel.Tests/Microsoft.NET.HostModel.Tests.csproj : error NU1101: Unable to find package Microsoft.NETCore.App.Host.linux-ppc64le. No packages exist with this id in source(s): dotnet-diagnostics-tests, dotnet-eng, dotnet-libraries, dotnet-libraries-transport, dotnet-public, dotnet-tools, dotnet10, dotnet10-transport, dotnet11, dotnet11-transport [/__w/1/s/Build.proj]
2026-07-08T07:07:39.3391264Z /__w/1/s/src/installer/tests/HostActivation.Tests/HostActivation.Tests.csproj : error NU1101: Unable to find package Microsoft.NETCore.App.Host.linux-ppc64le. No packages exist with this id in source(s): dotnet-diagnostics-tests, dotnet-eng, dotnet-libraries, dotnet-libraries-transport, dotnet-public, dotnet-tools, dotnet10, dotnet10-transport, dotnet11, dotnet11-transport [/__w/1/s/Build.proj]
2026-07-08T07:07:39.3392719Z /__w/1/s/src/installer/tests/AppHost.Bundle.Tests/AppHost.Bundle.Tests.csproj : error NU1101: Unable to find package Microsoft.NETCore.App.Host.linux-ppc64le. No packages exist with this id in source(s): dotnet-diagnostics-tests, dotnet-eng, dotnet-libraries, dotnet-libraries-transport, dotnet-public, dotnet-tools, dotnet10, dotnet10-transport, dotnet11, dotnet11-transport [/__w/1/s/Build.proj]
2026-07-08T07:07:39.3712165Z   Restored /__w/1/s/src/installer/tests/Microsoft.DotNet.CoreSetup.Packaging.Tests/Microsoft.DotNet.CoreSetup.Packaging.Tests.csproj (in 1.21 sec).
2026-07-08T07:07:39.4230824Z   Failed to restore /__w/1/s/src/installer/tests/HostActivation.Tests/HostActivation.Tests.csproj (in 1.24 sec).
2026-07-08T07:07:39.4231121Z   Failed to restore /__w/1/s/src/installer/tests/Microsoft.NET.HostModel.Tests/Microsoft.NET.HostModel.Tests.csproj (in 1.3 sec).
2026-07-08T07:07:39.4231611Z   Failed to restore /__w/1/s/src/installer/tests/AppHost.Bundle.Tests/AppHost.Bundle.Tests.csproj (in 106 ms).

2026-07-08T07:08:13.7108080Z /__w/1/s/src/installer/tests/Microsoft.NET.HostModel.Tests/Microsoft.NET.HostModel.Tests.csproj : error NU1101: Unable to find package Microsoft.NETCore.App.Host.linux-s390x. No packages exist with this id in source(s): dotnet-diagnostics-tests, dotnet-eng, dotnet-libraries, dotnet-libraries-transport, dotnet-public, dotnet-tools, dotnet10, dotnet10-transport, dotnet11, dotnet11-transport [/__w/1/s/Build.proj]
2026-07-08T07:08:13.7110982Z /__w/1/s/src/installer/tests/HostActivation.Tests/HostActivation.Tests.csproj : error NU1101: Unable to find package Microsoft.NETCore.App.Host.linux-s390x. No packages exist with this id in source(s): dotnet-diagnostics-tests, dotnet-eng, dotnet-libraries, dotnet-libraries-transport, dotnet-public, dotnet-tools, dotnet10, dotnet10-transport, dotnet11, dotnet11-transport [/__w/1/s/Build.proj]
2026-07-08T07:08:14.0217372Z   Failed to restore /__w/1/s/src/installer/tests/HostActivation.Tests/HostActivation.Tests.csproj (in 2.06 sec).
2026-07-08T07:08:14.0217628Z   Failed to restore /__w/1/s/src/installer/tests/Microsoft.NET.HostModel.Tests/Microsoft.NET.HostModel.Tests.csproj (in 2.39 sec).
2026-07-08T07:08:14.0219314Z /__w/1/s/src/installer/tests/AppHost.Bundle.Tests/AppHost.Bundle.Tests.csproj : error NU1101: Unable to find package Microsoft.NETCore.App.Host.linux-s390x. No packages exist with this id in source(s): dotnet-diagnostics-tests, dotnet-eng, dotnet-libraries, dotnet-libraries-transport, dotnet-public, dotnet-tools, dotnet10, dotnet10-transport, dotnet11, dotnet11-transport [/__w/1/s/Build.proj]
2026-07-08T07:08:14.1068233Z   Failed to restore /__w/1/s/src/installer/tests/AppHost.Bundle.Tests/AppHost.Bundle.Tests.csproj (in 29 ms).

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