Can't build Wasm project with SKXmlCanvas control - Visual Studio 2022 Preview

[ricardoromaobr]

Trying to build uno app with skiasharp view

I'm trying to experiment a draw with unoplatform.
I create a project to make some experiments;
I'm running Uwp project and clicking on canvas and drawing a red circle on the surface.
But when I try do compile the Wasm project an error to build the project is showed:

I started with Uno.Wasm.Bootstrap.DevServer and Uno.Wasm.Bootstrap from version 2.10
Some version has a problem to found the linux subsystem. From version 3.0.0-dev-101 this error start showed.

The repository with the small test app is here

The uno-check below:

I create the app using dotnet CLI
dotnet new unoapp -o MyApp4

[jeromelaban]

Thanks for the report. You may need to take a look at the binlog to troubleshoot the error: https://platform.uno/docs/articles/uno-builds-troubleshooting.html

[jeromelaban]

Thanks. It seems that the python version installed on your system is too old (or missing modules) for emscripten to work with. Can you instal a more recent python version on your system Python from Windows Store, or manually through Python's official site.

[ricardoromaobr]

The same error continue
The Python version

And the compile error

I will try to do it on my macbook pro with vs code if works I will use them.

[jeromelaban]

You're likely getting a different error this time. Take a look at a new binlog to see what is not working.

[ricardoromaobr]

I tried more one time.
msbuild.zip

[ricardoromaobr]

I tried to use a stable dotnet 5.0.400 too.
I used the Uno.Wasm.Bootstrap.DevServer and Uno.Wasm.Bootstrap 2.1.0
The project compile and run. But the events not works.

[jeromelaban]

From your build log, it seems that emscripten has failed to initialize. Can you try deleting the folder C:/Users/ricardo/.uno and try again with the 3.0.0-dev.138 bootstrapper?

Also, for the pointers to work, currently in Uno the Canvas needs to have non-null background, like this:

<skia:SKXamlCanvas   
                   PointerMoved="Rectangle_PoiterMoved" 
                   PointerPressed="Rectangle_PoiterPressed"
                   PaintSurface="OnPaintSurface"
                   x:Name="Workbench" 
                   Background="Transparent"
                   Grid.Row="1"/>

[ricardoromaobr]

Ok.
Visual Studio 2019 withUno.Wasm.Bootstrap.DevServer version 2.1.0 works fine.
Visual studio 2022 found wsl only with the version of Uno.Wasm.Bootstrap.DevServer is 3.0.0-dev.138.

Build failed using viusal studio 20222.
But if I use de CLI donet build it works.
Visual Studio 2022_output_builder.txt
I would build using CLI and debugger with visual studio 2022 I will try in that way for now.
I preferer using visual studio 2022 preview because it show less fake errors that visual studio 2019.
Looking in the output I see that visual studio 2022 use a python in the .uno directory and not the installed by me. Is correct this observation?
With that I can make a better experiment
Thanks very much!

[jeromelaban]

It seems that emscripten is not working well on your windows installation, for some reason. Could be related to the existing python installation you had.

You can still for the use of WSL by adding this to your project:

<PropertyGroup>
   <WasmShellEnableEmscriptenWindows>true</WasmShellEnableEmscriptenWindows>
</PropertyGroup>

[ricardoromaobr]

The result from CLI

My dotnet frameworks installed

[jeromelaban]

Please answer in the original thread, each new section is flagged as a possible answer :)

[ricardoromaobr]

It seems that emscripten is not working well on your windows installation, for some reason. Could be related to the existing python installation you had.

You can still for the use of WSL by adding this to your project:

<PropertyGroup>
   <WasmShellEnableEmscriptenWindows>true</WasmShellEnableEmscriptenWindows>
</PropertyGroup>

I set the PHYTHONHOME environment variable and add this new PropertyGroup on project. With that the visual studio 2022 works.
Thanks! Now I will take some time to finish my tests.