aspnetcorev2_inprocess should not be published for PublishAot libraries

[eerhardt]

Describe the bug

When building a Native AOT library that references an ASP.NET nuget package on windows, the aspnetcorev2_inprocess.dll is being published to the output folder.

To Reproduce

dotnet publish -r win-x64 the following library:

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <TargetFramework>net8.0</TargetFramework>
    <Nullable>enable</Nullable>
    <ImplicitUsings>enable</ImplicitUsings>
    <InvariantGlobalization>true</InvariantGlobalization>
    <PublishAot>true</PublishAot>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="Microsoft.AspNetCore.Authentication.JwtBearer" Version="8.0.4" />
  </ItemGroup>
</Project>

using Microsoft.AspNetCore.Authentication.JwtBearer;
using System.Runtime.InteropServices;

namespace MyLibrary;

public static class EntryPoints
{
    [UnmanagedCallersOnly(EntryPoint = "MyValidate")]
    public static int MyValidate()
    {
        JwtBearerPostConfigureOptions o = new JwtBearerPostConfigureOptions();
        return 1;
    }
}

Look in the bin\Release\net8.0\win-x64\publish folder:

that aspnetcorev2_inprocess.dll shouldn't be present. It is not used by the library.

This is similar to #29896, but for libraries and not web apps.

Exceptions (if any)

N/A

Further technical details

• Include the output of dotnet --info

❯ dotnet --info
.NET SDK:
 Version:           8.0.300-preview.24203.14
 Commit:            b7e38f457d
 Workload version:  8.0.300-manifests.a11d0ba5
 MSBuild version:   17.10.0+4f6b1bb28

Runtime Environment:
 OS Name:     Windows
 OS Version:  10.0.22631
 OS Platform: Windows
 RID:         win-x64
 Base Path:   C:\Program Files\dotnet\sdk\8.0.300-preview.24203.14\

.NET workloads installed:
 [aspire]
   Installation Source: SDK 8.0.300-preview.24203, VS 17.11.34822.286
   Manifest Version:    8.0.0-preview.7.24224.7/8.0.100
   Manifest Path:       C:\Program Files\dotnet\sdk-manifests\8.0.100\microsoft.net.sdk.aspire\8.0.0-preview.7.24224.7\WorkloadManifest.json
   Install Type:        FileBased


Host:
  Version:      8.0.2
  Architecture: x64
  Commit:       1381d5ebd2

.NET SDKs installed:
  3.1.426 [C:\Program Files\dotnet\sdk]
  6.0.129 [C:\Program Files\dotnet\sdk]
  6.0.321 [C:\Program Files\dotnet\sdk]
  6.0.421 [C:\Program Files\dotnet\sdk]
  7.0.118 [C:\Program Files\dotnet\sdk]
  7.0.408 [C:\Program Files\dotnet\sdk]
  8.0.300-preview.24203.14 [C:\Program Files\dotnet\sdk]

.NET runtimes installed:
  Microsoft.AspNetCore.App 3.1.32 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 6.0.26 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 6.0.27 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 6.0.29 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 7.0.16 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 7.0.18 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 8.0.2 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 3.1.32 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 6.0.26 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 6.0.27 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 6.0.29 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 7.0.16 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 7.0.18 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 8.0.2 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.WindowsDesktop.App 3.1.32 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
  Microsoft.WindowsDesktop.App 6.0.26 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
  Microsoft.WindowsDesktop.App 6.0.27 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
  Microsoft.WindowsDesktop.App 6.0.29 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
  Microsoft.WindowsDesktop.App 7.0.16 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
  Microsoft.WindowsDesktop.App 7.0.18 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
  Microsoft.WindowsDesktop.App 8.0.2 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

Other architectures found:
  x86   [C:\Program Files (x86)\dotnet]
    registered at [HKLM\SOFTWARE\dotnet\Setup\InstalledVersions\x86\InstallLocation]

Environment variables:
  Not set

global.json file:
  Not found

Learn more:
  https://aka.ms/dotnet/info

Download .NET:
  https://aka.ms/dotnet/download

cc @halter73 @DamianEdwards

[DamianEdwards]

Huh that's interesting. What is it that triggers the copying of that file, the transitive <FrameworkReference />?

[eerhardt]

What is it that triggers the copying of that file, the transitive ?

Correct. It originates from resolving the "RuntimePack" assets:

In #29984, we ended up setting PublishIISAssets=false when PublishAot == true. But that is only with the WebSDK, which doesn't really help here since I'm just building a library and the ASP.NET runtime pack is getting brought in transitively.