SparseApp (Unpackaged + Self-contained WinUI3) cannot locate module-specific PRI (AssemblyName.pri) #10856
Description
Describe the bug
When running a WinUI 3 SparseApp in unpackaged + self-contained mode, the application fails to locate the module-specific PRI file (PackageName.pri).
Observed behavior:
The runtime cannot find AssemblyName.pri.
Changing ProjectPriFileName to resources.pri works.
The relevant code might be here: when the app is attached with an identity (SparseApp), only resources.pri is loaded by default.
Why is this important?
We have multiple WinUI 3 apps whose EXEs are output to the same folder. In this scenario, they cannot share the same resources.pri when using SparseApp, because each app needs its own module-specific PRI to avoid conflicts in the shared output directory.
Steps to reproduce the bug
- Build PowerToys settings
- Build Sparse App
- install Sparse App
- start PowerToys settings UI with Sparse App
Actual behavior
No response
Expected behavior
No response
Screenshots
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NuGet package version
None
Windows version
No response
Additional context
No response