Cargo SDK not compatible with .NET 10 SDK

[dfederm]

Error:

C:\Program Files\dotnet\sdk\10.0.101\Sdks\Microsoft.NET.Sdk\targets\Microsoft.NET.PackProjectTool.props(16,13): error MSB4022: The result "" of evaluating the value "$(MicrosoftNETBuildTasksAssembly)" of the "AssemblyFile" attribute in element is not valid.

Specifically this is the CargoInstall.proj project inside the SDK

This is because this PR: dotnet/sdk#49479. It adds:

  <UsingTask TaskName="Microsoft.NET.Build.Tasks.GetNuGetShortFolderName"
            AssemblyFile="$(MicrosoftNETBuildTasksAssembly)" />

MicrosoftNETBuildTasksAssembly is defined in Microsoft.NET.Sdk.Common.targets, which the CargoInstall.proj does not import. It does import Microsoft.NET.Sdk's props, but not the targets.

[dfederm]

@novacole

[davidjenni]

Issue is not VS2026 related, but only occurs when targeting net10.

On my MBP (obv. no VS), the error repros as @dfederm described while targeting net10, but works without hiccup when targeting net8. Seems like a regression from net8, and is in effect a net10 blocker for rust/cargo projects in an msbuild tree.

net10 repro:

• global.json:

{
  "sdk": {
    "version": "10.0.100"
  },
  "msbuild-sdks": {
    "Microsoft.Build.Cargo": "1.0.365-preview"
  }
}

• repro.cargoproj:

<Project Sdk="Microsoft.Build.Cargo">
</Project>

• dotnet restore repro.cargoproj ==> same error as OP

net8 still works:

• change global.json to use net8 sdk: "version": "8.0.100"
• dotnet restore repro.cargoproj ==> restore completes successfully

[dfederm]

Yep, the error and the change I pointed to both show that it's net10, not VS2026 (tbf, VS2026 comes.woth net10 though).