[BUG] error during linking SkiaSharp.Views.Android

[NPadrutt]

Description

I have a .net MAUI app that uses SkiaSharp via LiveCharts2. On .net 6 and .net 7 RC1 that worked without issues. on .net 7 RC2 I get this error when I publish my app for Android:

ILLink : error IL1011: Failed to write 'obj\Release\net7.0-android\android-x86\linked\SkiaSharp.Views.Android.dll'. [D:\a\MoneyFox\MoneyFox\src\MoneyFox.Ui\MoneyFox.Ui.csproj::TargetFramework=net7.0-android]
  Fatal error in IL Linker
  Unhandled exception. Mono.Linker.LinkerFatalErrorException: ILLink: error IL1011: Failed to write 'obj\Release\net7.0-android\android-x86\linked\SkiaSharp.Views.Android.dll'.
   ---> System.ArgumentException: Member 'System.Int32 SKCanvasView_ignorePixelScaling' is declared in another module and needs to be imported
     at Mono.Cecil.MetadataBuilder.LookupToken(IMetadataTokenProvider provider)
     at Mono.Cecil.Cil.CodeWriter.WriteOperand(Instruction instruction)
     at Mono.Cecil.Cil.CodeWriter.WriteInstructions()
     at Mono.Cecil.Cil.CodeWriter.WriteResolvedMethodBody(MethodDefinition method)
     at Mono.Cecil.Cil.CodeWriter.WriteMethodBody(MethodDefinition method)
     at Mono.Cecil.MetadataBuilder.AddMethod(MethodDefinition method)
     at Mono.Cecil.MetadataBuilder.AddMethods(TypeDefinition type)
     at Mono.Cecil.MetadataBuilder.AddType(TypeDefinition type)
     at Mono.Cecil.MetadataBuilder.AddTypes()
     at Mono.Cecil.MetadataBuilder.BuildTypes()
     at Mono.Cecil.MetadataBuilder.BuildModule()
     at Mono.Cecil.MetadataBuilder.BuildMetadata()
     at Mono.Cecil.ModuleWriter.<>c.<BuildMetadata>b__2_0(MetadataBuilder builder, MetadataReader _)
     at Mono.Cecil.ModuleDefinition.Read[TItem,TRet](TItem item, Func`3 read)
     at Mono.Cecil.ModuleWriter.BuildMetadata(ModuleDefinition module, MetadataBuilder metadata)
     at Mono.Cecil.ModuleWriter.Write(ModuleDefinition module, Disposable`1 stream, WriterParameters parameters)
     at Mono.Cecil.ModuleWriter.WriteModule(ModuleDefinition module, Disposable`1 stream, WriterParameters parameters)
     at Mono.Cecil.ModuleDefinition.Write(String fileName, WriterParameters parameters)
     at Mono.Cecil.AssemblyDefinition.Write(String fileName, WriterParameters parameters)
     at Mono.Linker.Steps.OutputStep.WriteAssembly(AssemblyDefinition assembly, String directory, WriterParameters writerParameters)
     --- End of inner exception stack trace ---
     at Mono.Linker.Steps.OutputStep.WriteAssembly(AssemblyDefinition assembly, String directory, WriterParameters writerParameters)
     at Mono.Linker.Steps.OutputStep.OutputAssembly(AssemblyDefinition assembly)
     at Mono.Linker.Steps.BaseStep.Process(LinkContext context)
     at Mono.Linker.Pipeline.ProcessStep(LinkContext context, IStep step)
     at Mono.Linker.Pipeline.Process(LinkContext context)
     at Mono.Linker.Driver.Run(ILogger customLogger)
     at Mono.Linker.Driver.Main(String[] args)

I'm able to publish for iOS without issues though.

Code

Expected Behavior

Either linking works correctly or the library does skip linking.

Actual Behavior

The linking fails which causes the build to fail.

Basic Information

• Platform Target Frameworks:
  • Android: .net7-android

[NPadrutt]

As an update, this issue persists on the stable release of .net 7.

[justlucky]

As an update, this issue persists on the stable release of .net 7.

[AswinPG]

As an update, this issue persists on the stable release of .net 7. :(

[clough360]

Yes, can confirm this issue with stable release of .Net 7. Only occurs on Android, compiles ok on IOS

[tipa]

Same problem has been posted here (incl. a workaround): dotnet/maui#11901

[mattleibow]

Here is the workaround and explanation dotnet/maui#11901 (comment)

[mattleibow]

Closing this as it is fixed in a servicing release as well as rewritten in net8.