.NET 5 Preview 8 ReadyToRunCompiler task failure

[isaacrlevin]

I am attempting to publish a .NET 5 P8 WPF project and get the following error

C:\Program Files\dotnet\sdk\5.0.100-preview.8.20417.9\Sdks\Microsoft.NET.Sdk\targets\Microsoft.NET.Publish.targets(397,28): error MSB4094: "C:\Users\islevin.nuget\packages\microsoft.windows.cswinrt\0.1.0-prerelease.200512.7\lib\netcoreapp5.0\winrt.runtime.dll;C:\Users\islevin.nuget\packages\microsoft.windows.sdk.net.ref\10.0.19041.1-preview\lib\WinRT.Runtime.dll" is an invalid value for the "CompilationEntry" parameter of the "RunReadyToRunCompiler" task. Multiple items cannot be passed into a parameter of type "Microsoft.Build.Framework.ITaskItem". [D:\dev\Personal\PresenceLight\src\PresenceLight\PresenceLight.csproj]

Seems that a particular .dll is being passed twice for whatever reason. Here is the command I am running

dotnet publish -c Release /p:PublishProfile=Properties/PublishProfiles/WinX64.pubxml

And the contents of the publish file

<?xml version="1.0" encoding="utf-8"?>
<!--
https://go.microsoft.com/fwlink/?LinkID=208121. 
-->
<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
  <PropertyGroup>
    <PublishProtocol>FileSystem</PublishProtocol>
    <Platform>x64</Platform>
    <TargetFramework>net5.0-windows10.0.19041</TargetFramework>
    <RuntimeIdentifier>win-x64</RuntimeIdentifier>
    <PublishDir>bin\$(Configuration)\$(TargetFramework)\$(RuntimeIdentifier)\publish\</PublishDir>
    <SelfContained>true</SelfContained>
    <PublishSingleFile>False</PublishSingleFile>
    <PublishReadyToRun>True</PublishReadyToRun>
    <PublishTrimmed>False</PublishTrimmed>
  </PropertyGroup>
</Project>

If I set PublishReadyToRun to false, publish works as expected. Can provide my .props or .csproj if needed

[isaacrlevin]

cc @mangod9

[mangod9]

Hi @isaacrlevin, is this a regression in p8 ? Adding @AntonLapounov since he has worked on PublishReadyToRun recently

[isaacrlevin]

It worked in Preview 7, so unless I am doing something wrong, it is a regression

[AntonLapounov]

@isaacrlevin Do you hit the same issue with a new WPF project ("dotnet new wpf")?

[isaacrlevin]

I do not, this happens when I run a build in Azure DevOps, it works locally and I have no idea why

[AntonLapounov]

@isaacrlevin Thank you for trying that. Did you use the same SDK version (5.0.100-preview.8.20417.9) locally? Or was it a different version?

[isaacrlevin]

Same SDK. Here is the solution that is not working
https://github.com/isaacrlevin/PresenceLight/

Highlighted task that fails
https://github.com/isaacrlevin/PresenceLight/blob/main/azure-pipelines-wpf.yml#L105

More than happy to modify anything to get to work

[AntonLapounov]

I have reproduced the issue. The extra winrt.runtime.dll comes from Microsoft.Windows.SDK.Net.Ref package, which was added in dotnet/sdk#12232 by @wli3.