PublishSingleFile fail to work when you have a WinUI3 Class Lib

[ReneeGA2020]

Describe the bug

When PublishSingleFile is on, the build process will try to find the lib dll in the wrong location

Steps to reproduce the bug

1. Create a new winUI3 app
2. Add a c# winUI3 Class Lib
3. Add dependency
4. Build with win-x64 + PublishSingleFile + WindowsAppSDKSelfContained + WindowsPackageType = None + SelfContained
   ->
   Error CS0006: Metadata file 'C:\Users\xxxxx\source\repos\App8\ClassLibrary1\bin\Release\net8.0-windows10.0.19041.0\win-x64\ClassLibrary1.dll' could not be found

Test project:
App8.zip

Expected behavior

Build successfully

Screenshots

No response

NuGet package version

WinUI 3 - Windows App SDK 1.5.3: 1.5.240428000

Windows version

No response

Additional context

ClassLibrary1.dll can actually be found in ClassLibrary1\bin\Release\net8.0-windows10.0.19041.0\ClassLibrary1.dll instead of 'ClassLibrary1\bin\Release\net8.0-windows10.0.19041.0\ win-x64\ClassLibrary1.dll'

[github-actions]

Hi I'm an AI powered bot that finds similar issues based off the issue title.

Please view the issues below to see if they solve your problem, and if the issue describes your problem please consider closing this one. Thank you!

Open similar issues:

• ms-appx:// references in XAML are not redirected when PublishSingleFile is enabed (#9468), similarity score: 0.74
• Can not Build Project due to error message APPX110 Payload contains two or more files with the same destination path '.pdb'. (#9583), similarity score: 0.73

Closed similar issues:

• Using Win2D breaks publishing unpackaged app as single file (#6400), similarity score: 0.72
• PRI252: 0xdef00071 - File (ProjectPath)\bin\x86\Debug\net5.0(Project).pri not found when publishing the package (#3004), similarity score: 0.72
• Appx publish for sideloading doesn't copy the WinUI 2.x framework package in the right folder (#5972), similarity score: 0.72

Note: You can give me feedback by thumbs upping or thumbs downing this comment.

[ghost1372]

i think you should report it in WASDK repo
https://github.com/microsoft/windowsappsdk

[ReneeGA2020]

ok