Is there a way to debug "CompileAvaloniaXamlTask" task failed unexpectedly?

[dbriard]

I often got those errors, and compiling my WASM project is a bit of luck.

I am compiling for AOT with trimming a WASM project.
Something it work with "dotnet publish -c Release -p:DebugType=None -p:DebugSymbols=false"
Sometime with just "dotnet publish -c Release"
Sometime I need to remove obj & bin folders... it is really a pain when I got those errors.

I managed to upgrade my working WASM 11.0.10/net7 project to 11.1 beta 2/net8, but now I still have to deal with those error when compiling in Dockerfile.

Can you explain what CompileAvaloniaXamlTask is doing? Is there a way to know what failed exactly? Do I need it for all dependency projects?

For example, the reported error below is about a project that do not have any Xaml file, just fonts in AvaloniaResouces (basically it is a copy of Avalonia.Fonts.Inter with less variants).

/root/.nuget/packages/avalonia/11.1.0-beta2/buildTransitive/AvaloniaBuildTasks.targets(138,5): error MSB4018: The "CompileAvaloniaXamlTask" task failed unexpectedly. [/app/MUI.Fonts.Inter/MUI.Fonts.Inter.csproj]
2024-05-28T08:44:17.0783677Z #15 41.21 /root/.nuget/packages/avalonia/11.1.0-beta2/buildTransitive/AvaloniaBuildTasks.targets(138,5): error MSB4018: System.IO.FileNotFoundException: Could not find file '/app/MUI.Fonts.Inter/obj/Release/net8.0/MUI.Fonts.Inter.pdb'. [/app/MUI.Fonts.Inter/MUI.Fonts.Inter.csproj]
2024-05-28T08:44:17.0784494Z #15 41.21 /root/.nuget/packages/avalonia/11.1.0-beta2/buildTransitive/AvaloniaBuildTasks.targets(138,5): error MSB4018: File name: '/app/MUI.Fonts.Inter/obj/Release/net8.0/MUI.Fonts.Inter.pdb' [/app/MUI.Fonts.Inter/MUI.Fonts.Inter.csproj]
2024-05-28T08:44:17.0785610Z #15 41.21 /root/.nuget/packages/avalonia/11.1.0-beta2/buildTransitive/AvaloniaBuildTasks.targets(138,5): error MSB4018:    at Interop.ThrowExceptionForIoErrno(ErrorInfo errorInfo, String path, Boolean isDirError) [/app/MUI.Fonts.Inter/MUI.Fonts.Inter.csproj]
2024-05-28T08:44:17.0786799Z #15 41.21 /root/.nuget/packages/avalonia/11.1.0-beta2/buildTransitive/AvaloniaBuildTasks.targets(138,5): error MSB4018:    at Microsoft.Win32.SafeHandles.SafeFileHandle.Open(String fullPath, FileMode mode, FileAccess access, FileShare share, FileOptions options, Int64 preallocationSize, UnixFileMode openPermissions, Int64& fileLength, UnixFileMode& filePermissions, Boolean failForSymlink, Boolean& wasSymlink, Func`4 createOpenException) [/app/MUI.Fonts.Inter/MUI.Fonts.Inter.csproj]
2024-05-28T08:44:17.2287150Z #15 41.21 /root/.nuget/packages/avalonia/11.1.0-beta2/buildTransitive/AvaloniaBuildTasks.targets(138,5): error MSB4018:    at System.IO.FileSystem.CopyFile(String sourceFullPath, String destFullPath, Boolean overwrite) [/app/MUI.Fonts.Inter/MUI.Fonts.Inter.csproj]
2024-05-28T08:44:17.2288244Z #15 41.21 /root/.nuget/packages/avalonia/11.1.0-beta2/buildTransitive/AvaloniaBuildTasks.targets(138,5): error MSB4018:    at Avalonia.Build.Tasks.CompileAvaloniaXamlTask.CopyAndTouch(String source, String destination) in /_/src/Avalonia.Build.Tasks/CompileAvaloniaXamlTask.cs:line 54 [/app/MUI.Fonts.Inter/MUI.Fonts.Inter.csproj]
2024-05-28T08:44:17.2289196Z #15 41.21 /root/.nuget/packages/avalonia/11.1.0-beta2/buildTransitive/AvaloniaBuildTasks.targets(138,5): error MSB4018:    at Avalonia.Build.Tasks.CompileAvaloniaXamlTask.Execute() in /_/src/Avalonia.Build.Tasks/CompileAvaloniaXamlTask.cs:line 41 [/app/MUI.Fonts.Inter/MUI.Fonts.Inter.csproj]
2024-05-28T08:44:17.2290063Z #15 41.21 /root/.nuget/packages/avalonia/11.1.0-beta2/buildTransitive/AvaloniaBuildTasks.targets(138,5): error MSB4018:    at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute() [/app/MUI.Fonts.Inter/MUI.Fonts.Inter.csproj]
2024-05-28T08:44:17.2291096Z #15 41.21 /root/.nuget/packages/avalonia/11.1.0-beta2/buildTransitive/AvaloniaBuildTasks.targets(138,5): error MSB4018:    at Microsoft.Build.BackEnd.TaskBuilder.ExecuteInstantiatedTask(ITaskExecutionHost taskExecutionHost, TaskLoggingContext taskLoggingContext, TaskHost taskHost, ItemBucket bucket, TaskExecutionMode howToExecuteTask) [/app/MUI.Fonts.Inter/MUI.Fonts.Inter.csproj]

[maxkatz6]

It should be fixed in latest master