[BuildTools.MSIX] Not usable out of the box with vanilla WPF project

[riverar]

Description

I'm trying to use the Microsoft.Windows.SDK.BuildTools.MSIX NuGet package with a .NET Framework 4.8 WPF application and encountered an issue at build.

Steps to Reproduce

1. Create a vanilla .NET Framework 4.8 WPF project
2. Add the NuGet package Microsoft.Windows.SDK.BuildTools.MSIX version 1.2.20250107.1
3. Build the project

Observed Behavior

Building the project fails with the following error:

[...]\build\Microsoft.Windows.SDK.BuildTools.MSIX.MrtCore.PriGen.targets(399,5): error APPX3217: SDK folder containing 'UAP.props' for 'UAP 7.0' cannot be located.

Workaround

Adding the NuGet package Microsoft.Windows.SDK.BuildTools version 10.0.26100.1742 resolves the error.

Question

Is there something I'm missing that would enable the Microsoft.Windows.SDK.BuildTools.MSIX package to work independently with the inbox Windows SDK?

[dongle-the-gadget]

I believe you’re supposed to bring in the regular BuildTools package, UWP on .NET 9, which is currently the only supported target, does that.

[riverar]

The package should then declare that as a dependency, right?

[riverar]

The aforementioned props file seems to be geared towards supporting both scenarios.

  <!-- Tools installed via nupkg -->
  <Target Name="_GetSdkToolsPathsFromPackage" Condition="'$(UseSdkBuildToolsPackage)' == 'true'" />

  <!-- Tools installed via SDK msi-->
  <Target Name="_GetSdkToolsPathsFromSdk" Condition="'$(UseSdkBuildToolsPackage)' != 'true'">
   ...

[dongle-the-gadget]

Is EnableMsixTooling enabled?

[riverar]

Didn't test that; that would be out of scope with my vanilla WPF project test.