To get support for these language features, I tried installing and using .NET 8:
$ dotnet --info
.NET SDK:
Version: 8.0.102
Commit: b7800db369
Workload version: 8.0.100-manifests.03fa9662
Runtime Environment:
OS Name: fedora
OS Version: 39
OS Platform: Linux
RID: fedora.39-x64
Base Path: /usr/lib64/dotnet/sdk/8.0.102/
.NET workloads installed:
Workload version: 8.0.100-manifests.03fa9662
There are no installed workloads to display.
Host:
Version: 8.0.2
Architecture: x64
Commit: 1381d5ebd2
.NET SDKs installed:
8.0.102 [/usr/lib64/dotnet/sdk]
.NET runtimes installed:
Microsoft.AspNetCore.App 8.0.2 [/usr/lib64/dotnet/shared/Microsoft.AspNetCore.App]
Microsoft.NETCore.App 8.0.2 [/usr/lib64/dotnet/shared/Microsoft.NETCore.App]
Other architectures found:
None
Environment variables:
DOTNET_ROOT [/usr/lib64/dotnet]
global.json file:
MSBuildStructuredLog/global.json
Learn more:
https://aka.ms/dotnet/info
Download .NET:
https://aka.ms/dotnet/download
But the application still did not work for me:
$ ./run.sh
Build succeeded.
0 Warning(s)
0 Error(s)
Time Elapsed 00:00:05.80
You must install or update .NET to run this application.
App: MSBuildStructuredLog/bin/StructuredLogViewer.Avalonia/Debug/net7.0/StructuredLogViewer.Avalonia
Architecture: x64
Framework: 'Microsoft.NETCore.App', version '7.0.0' (x64)
.NET location: /usr/lib64/dotnet
The following frameworks were found:
8.0.2 at [/usr/lib64/dotnet/shared/Microsoft.NETCore.App]
Learn more:
https://aka.ms/dotnet/app-launch-failed
To install missing framework, download:
https://aka.ms/dotnet-core-applaunch?framework=Microsoft.NETCore.App&framework_version=7.0.0&arch=x64&rid=fedora.39-x64&os=fedora.39
$ ./run.sh
/usr/lib64/dotnet/sdk/8.0.102/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.Sdk.FrameworkReferenceResolution.targets(90,5): error NETSDK1083: The specified RuntimeIdentifier 'win7-x64' is not recognized. See https://aka.ms/netsdk1083 for more information. [MSBuildStructuredLog/src/StructuredLogViewer.Avalonia/StructuredLogViewer.Avalonia.csproj]
/usr/lib64/dotnet/sdk/8.0.102/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.Sdk.FrameworkReferenceResolution.targets(90,5): error NETSDK1083: The specified RuntimeIdentifier 'ubuntu.14.04-x64' is not recognized. See https://aka.ms/netsdk1083 for more information. [MSBuildStructuredLog/src/StructuredLogViewer.Avalonia/StructuredLogViewer.Avalonia.csproj]
/usr/lib64/dotnet/sdk/8.0.102/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.Sdk.FrameworkReferenceResolution.targets(90,5): error NETSDK1083: The specified RuntimeIdentifier 'osx.10.12-x64' is not recognized. See https://aka.ms/netsdk1083 for more information. [MSBuildStructuredLog/src/StructuredLogViewer.Avalonia/StructuredLogViewer.Avalonia.csproj]
Build FAILED.
/usr/lib64/dotnet/sdk/8.0.102/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.Sdk.FrameworkReferenceResolution.targets(90,5): error NETSDK1083: The specified RuntimeIdentifier 'win7-x64' is not recognized. See https://aka.ms/netsdk1083 for more information. [MSBuildStructuredLog/src/StructuredLogViewer.Avalonia/StructuredLogViewer.Avalonia.csproj]
/usr/lib64/dotnet/sdk/8.0.102/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.Sdk.FrameworkReferenceResolution.targets(90,5): error NETSDK1083: The specified RuntimeIdentifier 'ubuntu.14.04-x64' is not recognized. See https://aka.ms/netsdk1083 for more information. [MSBuildStructuredLog/src/StructuredLogViewer.Avalonia/StructuredLogViewer.Avalonia.csproj]
/usr/lib64/dotnet/sdk/8.0.102/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.Sdk.FrameworkReferenceResolution.targets(90,5): error NETSDK1083: The specified RuntimeIdentifier 'osx.10.12-x64' is not recognized. See https://aka.ms/netsdk1083 for more information. [MSBuildStructuredLog/src/StructuredLogViewer.Avalonia/StructuredLogViewer.Avalonia.csproj]
0 Warning(s)
3 Error(s)
Time Elapsed 00:00:00.44
The build failed. Fix the build errors and run again.
So I fixed that that by moving to the portable RIDs:
$ ./run.sh
Build succeeded.
0 Warning(s)
0 Error(s)
Time Elapsed 00:00:01.08
Unhandled exception. System.TypeInitializationException: The type initializer for 'SkiaSharp.SKObject' threw an exception.
---> System.InvalidOperationException: The version of the native libSkiaSharp library (88.0) is incompatible with this version of SkiaSharp. Supported versions of the native libSkiaSharp library are in the range [88.1, 89.0).
at SkiaSharp.SkiaSharpVersion.CheckNativeLibraryCompatible(Version minSupported, Version current, Boolean throwIfIncompatible)
at SkiaSharp.SkiaSharpVersion.CheckNativeLibraryCompatible(Boolean throwIfIncompatible)
at SkiaSharp.SKObject..cctor()
--- End of inner exception stack trace ---
at SkiaSharp.SKObject..ctor(IntPtr handle, Boolean owns)
at SkiaSharp.GRGlInterface..ctor(IntPtr h, Boolean owns)
at SkiaSharp.GRGlInterface.GetObject(IntPtr handle)
at SkiaSharp.GRGlInterface.CreateOpenGl(GRGlGetProcedureAddressDelegate get)
at Avalonia.Skia.GlSkiaGpu..ctor(IPlatformOpenGlInterface openGl, Nullable`1 maxResourceBytes) in /_/src/Skia/Avalonia.Skia/Gpu/OpenGl/GlSkiaGpu.cs:line 24
at Avalonia.Skia.PlatformRenderInterface..ctor(ISkiaGpu skiaGpu, Nullable`1 maxResourceBytes) in /_/src/Skia/Avalonia.Skia/PlatformRenderInterface.cs:line 37
at Avalonia.Skia.SkiaPlatform.Initialize(SkiaOptions options) in /_/src/Skia/Avalonia.Skia/SkiaPlatform.cs:line 20
at Avalonia.SkiaApplicationExtensions.<>c__0`1.<UseSkia>b__0_0() in /_/src/Skia/Avalonia.Skia/SkiaApplicationExtensions.cs:line 20
at Avalonia.Controls.AppBuilderBase`1.Setup() in /_/src/Avalonia.Controls/AppBuilderBase.cs:line 304
at Avalonia.Controls.AppBuilderBase`1.SetupWithLifetime(IApplicationLifetime lifetime) in /_/src/Avalonia.Controls/AppBuilderBase.cs:line 179
at Avalonia.ClassicDesktopStyleApplicationLifetimeExtensions.StartWithClassicDesktopLifetime[T](T builder, String[] args, ShutdownMode shutdownMode) in /_/src/Avalonia.Controls/ApplicationLifetimes/ClassicDesktopStyleApplicationLifetime.cs:line 208
at StructuredLogViewer.Avalonia.Program.Main(String[] args) in MSBuildStructuredLog/src/StructuredLogViewer.Avalonia/Program.cs:line 9
It looked like the SkiaSharp native dependency wasn't being added. I think this is because the non-portable SDK's RuntimeIdentifier isn't Linux. So I switched the conditional to compare with the portable RID:
Move to .NET 8, since the code uses language features that do not work against .NET 7.0.1xx SDKs.
Move to recommended portable runtime identifers instead of non-portable/OS-specific ones like ubuntu-14.04, or win7. .NET
Take a dependency on SkiaSharp.NativeAssets.Linux for any Linux-based OS, even when using a source-build SDK.
Here's more details on the above:
I started trying to use this with a .NET 7 SDK on Fedora:
And the viewer did not work for me:
To get support for these language features, I tried installing and using .NET 8:
But the application still did not work for me:
So I moved the project to .NET 8:
Trying to run the application again led to:
So I fixed that that by moving to the portable RIDs:
Then I tried to run that:
It looked like the SkiaSharp native dependency wasn't being added. I think this is because the non-portable SDK's RuntimeIdentifier isn't Linux. So I switched the conditional to compare with the portable RID:
And then
./run.shworked :tada: