Cannot run the samples on Linux because of workload dependencies

[timothyparez]

If you clone this repository and try to run it on Linux it will fail
because the android and macos workloads are not available:

/usr/lib/dotnet/sdk/8.0.110/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.TargetFrameworkInference.targets(117,5): error NETSDK1139: The target platform identifier android was not recognized. [...../Projects/Avalonia.Labs/src/Avalonia.Labs.Notifications/Avalonia.Labs.Notifications.csproj::TargetFramework=net8.0-android]
/usr/lib/dotnet/sdk/8.0.110/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.TargetFrameworkInference.targets(117,5): error NETSDK1139: The target platform identifier macos was not recognized. [.../Projects/Avalonia.Labs/samples/Avalonia.Labs.Catalog.Desktop/Avalonia.Labs.Catalog.Desktop.csproj::TargetFramework=net8.0-macos]

[emmauss]

Install the dotnet android and macos workloads

[timothyparez]

That doesn't work on Linux/Ubuntu

dotnet workload install android
Workload ID android is not recognized

dotnet workload install maui-android
Workload ID maui-android is not recognized

Other workloads like wasm-tools etc are supported.
It doesn't seem like Microsoft ever had the intention of making Xamarin/Maui stuff work on Linux.
(Which is one of the reasons we use Avalonia instead of MAUI)

[emmauss]

Did you install dotnet using the official install scripts from the dotnet site, or using "apt". Using the install scripts is recommended.

[timothyparez]

I probably installed via apt.
I will try the install scripts on a different machine.

[maxkatz6]

All standard workloads, except iOS, should be buildable on Linux.

[Genteure]

$ dotnet build samples/Avalonia.Labs.Catalog.Desktop/Avalonia.Labs.Catalog.Desktop.csproj
  Determining projects to restore...
/path/to/dotnet/sdk/8.0.404/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.Sdk.ImportWorkloads.targets(38,5): error NETSDK1178: The project depends on the following workload packs that do not exist in any of the workloads available in this installation: Microsoft.iOS.Sdk.net8.0_18.0 [/path/to/Avalonia.Labs/src/Avalonia.Labs.Notifications/Avalonia.Labs.Notifications.csproj::TargetFramework=net8.0-ios]
/path/to/dotnet/sdk/8.0.404/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.Sdk.ImportWorkloads.targets(38,5): error NETSDK1178: You may need to build the project on another operating system or architecture, or update the .NET SDK. [/path/to/Avalonia.Labs/src/Avalonia.Labs.Notifications/Avalonia.Labs.Notifications.csproj::TargetFramework=net8.0-ios]

Build FAILED.

/path/to/dotnet/sdk/8.0.404/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.Sdk.ImportWorkloads.targets(38,5): error NETSDK1178: The project depends on the following workload packs that do not exist in any of the workloads available in this installation: Microsoft.iOS.Sdk.net8.0_18.0 [/path/to/Avalonia.Labs/src/Avalonia.Labs.Notifications/Avalonia.Labs.Notifications.csproj::TargetFramework=net8.0-ios]
/path/to/dotnet/sdk/8.0.404/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.Sdk.ImportWorkloads.targets(38,5): error NETSDK1178: You may need to build the project on another operating system or architecture, or update the .NET SDK. [/path/to/Avalonia.Labs/src/Avalonia.Labs.Notifications/Avalonia.Labs.Notifications.csproj::TargetFramework=net8.0-ios]
    0 Warning(s)
    1 Error(s)

Time Elapsed 00:00:00.61

`dotnet --info` log dump

$ dotnet workload install android wasm-tools macos ios
Workload installation failed: Workload ID ios isn't supported on this platform.
$ dotnet workload install android wasm-tools macos 

Workload(s) 'wasm-tools android macos' are already installed.
...
Successfully installed workload(s) .

$ dotnet --info
.NET SDK:
 Version:           8.0.404
 Commit:            7b190310f2
 Workload version:  8.0.400-manifests.22517898
 MSBuild version:   17.11.9+a69bbaaf5

Runtime Environment:
 OS Name:     ubuntu
 OS Version:  24.04
 OS Platform: Linux
 RID:         linux-x64
 Base Path:   /path/to/dotnet/sdk/8.0.404/

.NET workloads installed:
Configured to use loose manifests when installing new manifests.
 [wasm-tools]
   Installation Source: SDK 8.0.400
   Manifest Version:    8.0.11/8.0.100
   Manifest Path:       /path/to/dotnet/sdk-manifests/8.0.100/microsoft.net.workload.mono.toolchain.current/8.0.11/WorkloadManifest.json
   Install Type:        FileBased

 [android]
   Installation Source: SDK 8.0.400
   Manifest Version:    34.0.145/8.0.100
   Manifest Path:       /path/to/dotnet/sdk-manifests/8.0.100/microsoft.net.sdk.android/34.0.145/WorkloadManifest.json
   Install Type:        FileBased

 [wasi-experimental]
   Installation Source: SDK 8.0.400
   Manifest Version:    8.0.11/8.0.100
   Manifest Path:       /path/to/dotnet/sdk-manifests/8.0.100/microsoft.net.workload.mono.toolchain.current/8.0.11/WorkloadManifest.json
   Install Type:        FileBased

 [macos]
   Installation Source: SDK 8.0.400
   Manifest Version:    15.0.8316/8.0.100
   Manifest Path:       /path/to/dotnet/sdk-manifests/8.0.100/microsoft.net.sdk.macos/15.0.8316/WorkloadManifest.json
   Install Type:        FileBased


Host:
  Version:      8.0.11
  Architecture: x64
  Commit:       9cb3b725e3

.NET SDKs installed:
  6.0.428 [/path/to/dotnet/sdk]
  8.0.404 [/path/to/dotnet/sdk]

.NET runtimes installed:
  Microsoft.AspNetCore.App 6.0.36 [/path/to/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 8.0.11 [/path/to/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 6.0.36 [/path/to/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 8.0.11 [/path/to/dotnet/shared/Microsoft.NETCore.App]

Other architectures found:
  None

Environment variables:
  DOTNET_ROOT       [/path/to/dotnet]

global.json file:
  Not found

Learn more:
  https://aka.ms/dotnet/info

Download .NET:
  https://aka.ms/dotnet/download

Workaround:

In Avalonia.Labs.Catalog.Desktop.csproj:

     <OutputType>Exe</OutputType>
+    <TargetFrameworks>net8.0</TargetFrameworks>
-    <TargetFrameworks>net8.0;net8.0-macos</TargetFrameworks>
     <Nullable>enable</Nullable>

In Avalonia.Labs.Notifications.csproj:

     <LangVersion>latest</LangVersion>
+    <TargetFrameworks>net8.0;net8.0-android</TargetFrameworks>
-    <TargetFrameworks>net8.0;net8.0-android;net8.0-ios</TargetFrameworks>
     <SupportedOSPlatformVersion Condition="'$(TargetFramework)' == 'net8.0-ios'">13.0</SupportedOSPlatformVersion>

And run

dotnet run --framework net8.0 --project samples/Avalonia.Labs.Catalog.Desktop/Avalonia.Labs.Catalog.Desktop.csproj