fix issue

<!-- Enter a brief description/summary of your PR here. What does it
fix/what does it change/how was it tested (even manually, if necessary)?
-->
## Summary of the Pull Request
This pull request updates the WinAppSDK version used in the build
pipeline to 1.8 and makes related improvements to the NuGet restore
process and configuration handling.

Version update:

* Updated the default value of the `winAppSdkVersionNumber` parameter
from `"1.7"` to `"1.8"` in `.pipelines/UpdateVersions.ps1`, ensuring the
pipeline uses the latest WinAppSDK version.

NuGet restore and configuration improvements:

* Changed the `Add-NuGetSourceAndMapping` call in the
`Resolve-WinAppSdkSplitDependencies` function to use the `$installDir`
variable instead of a hardcoded path, improving flexibility for local
package mapping in `.pipelines/UpdateVersions.ps1`.
* Added a `workingDirectory` property to the NuGet restore step in
`.pipelines/v2/templates/steps-update-winappsdk-and-restore-nuget.yml`
to ensure the restore process operates from the correct directory.
<!-- Please review the items on the PR checklist before submitting-->
## PR Checklist

- [ ] Closes: #xxx
<!-- - [ ] Closes: #yyy (add separate lines for additional resolved
issues) -->
- [ ] **Communication:** I've discussed this with core contributors
already. If the work hasn't been agreed, this work might be rejected
- [ ] **Tests:** Added/updated and all pass
- [ ] **Localization:** All end-user-facing strings can be localized
- [ ] **Dev docs:** Added/updated
- [ ] **New binaries:** Added on the required places
- [ ] [JSON for
signing](https://github.com/microsoft/PowerToys/blob/main/.pipelines/ESRPSigning_core.json)
for new binaries
- [ ] [WXS for
installer](https://github.com/microsoft/PowerToys/blob/main/installer/PowerToysSetup/Product.wxs)
for new binaries and localization folder
- [ ] [YML for CI
pipeline](https://github.com/microsoft/PowerToys/blob/main/.pipelines/ci/templates/build-powertoys-steps.yml)
for new test projects
- [ ] [YML for signed
pipeline](https://github.com/microsoft/PowerToys/blob/main/.pipelines/release.yml)
- [ ] **Documentation updated:** If checked, please file a pull request
on [our docs
repo](https://github.com/MicrosoftDocs/windows-uwp/tree/docs/hub/powertoys)
and link it here: #xxx

<!-- Provide a more detailed description of the PR, other things fixed,
or any additional comments/features here -->
## Detailed Description of the Pull Request / Additional comments

<!-- Describe how you validated the behavior. Add automated tests
wherever possible, but list manual validation steps taken as well -->
## Validation Steps Performed

.pipelines/UpdateVersions.ps1

@@ -1,7 +1,7 @@
 Param(
   # Using the default value of 1.7 for winAppSdkVersionNumber and useExperimentalVersion as false
   [Parameter(Mandatory=$False,Position=1)]
-  [string]$winAppSdkVersionNumber = "1.7",
+  [string]$winAppSdkVersionNumber = "1.8",
 
   # When the pipeline calls the PS1 file, the passed parameters are converted to string type
   [Parameter(Mandatory=$False,Position=2)]
@@ -16,32 +16,7 @@ Param(
   [string]$sourceLink = "https://microsoft.pkgs.visualstudio.com/ProjectReunion/_packaging/Project.Reunion.nuget.internal/nuget/v3/index.json"
 )
 
-function Update-NugetConfig {
-    param (
-        [string]$filePath = [System.IO.Path]::Combine($rootPath, "nuget.config")
-    )
 
-    Write-Host "Updating nuget.config file"
-    [xml]$xml = Get-Content -Path $filePath
-
-    # Add localpackages source into nuget.config
-    $packageSourcesNode = $xml.configuration.packageSources
-    $addNode = $xml.CreateElement("add")
-    $addNode.SetAttribute("key", "localpackages")
-    $addNode.SetAttribute("value", "localpackages")
-    $packageSourcesNode.AppendChild($addNode) | Out-Null
-
-    # Remove <packageSourceMapping> tag and its content
-    $packageSourceMappingNode = $xml.configuration.packageSourceMapping
-    if ($packageSourceMappingNode) {
-        $xml.configuration.RemoveChild($packageSourceMappingNode) | Out-Null
-    }
-
-    # print nuget.config after modification
-    $xml.OuterXml
-    # Save the modified nuget.config file
-    $xml.Save($filePath)
-}
 
 function Read-FileWithEncoding {
     param (
@@ -71,6 +46,132 @@ function Write-FileWithEncoding {
     $writer.Close()
 }
 
+
+function Add-NuGetSourceAndMapping {
+    param (
+        [xml]$Xml,
+        [string]$Key,
+        [string]$Value,
+        [string[]]$Patterns
+    )
+
+    # Ensure packageSources exists
+    if (-not $Xml.configuration.packageSources) {
+        $Xml.configuration.AppendChild($Xml.CreateElement("packageSources")) | Out-Null
+    }
+    $sources = $Xml.configuration.packageSources
+
+    # Add/Update Source
+    $sourceNode = $sources.SelectSingleNode("add[@key='$Key']")
+    if (-not $sourceNode) {
+        $sourceNode = $Xml.CreateElement("add")
+        $sourceNode.SetAttribute("key", $Key)
+        $sources.AppendChild($sourceNode) | Out-Null
+    }
+    $sourceNode.SetAttribute("value", $Value)
+
+    # Ensure packageSourceMapping exists
+    if (-not $Xml.configuration.packageSourceMapping) {
+        $Xml.configuration.AppendChild($Xml.CreateElement("packageSourceMapping")) | Out-Null
+    }
+    $mapping = $Xml.configuration.packageSourceMapping
+
+    # Remove invalid packageSource nodes (missing key or empty key)
+    $invalidNodes = $mapping.SelectNodes("packageSource[not(@key) or @key='']")
+    if ($invalidNodes) {
+        foreach ($node in $invalidNodes) {
+            $mapping.RemoveChild($node) | Out-Null
+        }
+    }
+
+    # Add/Update Mapping Source
+    $mappingSource = $mapping.SelectSingleNode("packageSource[@key='$Key']")
+    if (-not $mappingSource) {
+        $mappingSource = $Xml.CreateElement("packageSource")
+        $mappingSource.SetAttribute("key", $Key)
+        # Insert at top for priority
+        if ($mapping.HasChildNodes) {
+            $mapping.InsertBefore($mappingSource, $mapping.FirstChild) | Out-Null
+        } else {
+            $mapping.AppendChild($mappingSource) | Out-Null
+        }
+    }
+    
+    # Double check and force attribute
+    if (-not $mappingSource.HasAttribute("key")) {
+         $mappingSource.SetAttribute("key", $Key)
+    }
+
+    # Update Patterns
+    # RemoveAll() removes all child nodes AND attributes, so we must re-set the key afterwards
+    $mappingSource.RemoveAll()
+    $mappingSource.SetAttribute("key", $Key)
+
+    foreach ($pattern in $Patterns) {
+        $pkg = $Xml.CreateElement("package")
+        $pkg.SetAttribute("pattern", $pattern)
+        $mappingSource.AppendChild($pkg) | Out-Null
+    }
+}
+
+function Resolve-WinAppSdkSplitDependencies {
+    Write-Host "Version $WinAppSDKVersion detected. Resolving split dependencies..."
+    $installDir = Join-Path $rootPath "localpackages\output"
+    New-Item -ItemType Directory -Path $installDir -Force | Out-Null
+
+    # Create a temporary nuget.config to avoid interference from the repo's config
+    $tempConfig = Join-Path $env:TEMP "nuget_$(Get-Random).config"
+    Set-Content -Path $tempConfig -Value "<?xml version='1.0' encoding='utf-8'?><configuration><packageSources><clear /><add key='TempSource' value='$sourceLink' /></packageSources></configuration>"
+
+    try {
+        # Extract BuildTools version from Directory.Packages.props to ensure we have the required version
+        $dirPackagesProps = Join-Path $rootPath "Directory.Packages.props"
+        if (Test-Path $dirPackagesProps) {
+            $propsContent = Get-Content $dirPackagesProps -Raw
+            if ($propsContent -match '<PackageVersion Include="Microsoft.Windows.SDK.BuildTools" Version="([^"]+)"') {
+                $buildToolsVersion = $Matches[1]
+                Write-Host "Downloading Microsoft.Windows.SDK.BuildTools version $buildToolsVersion..."
+                $nugetArgsBuildTools = "install Microsoft.Windows.SDK.BuildTools -Version $buildToolsVersion -ConfigFile $tempConfig -OutputDirectory $installDir -NonInteractive -NoCache"
+                Invoke-Expression "nuget $nugetArgsBuildTools" | Out-Null
+            }
+        }
+
+        # Download package to inspect nuspec and keep it for the build
+        $nugetArgs = "install Microsoft.WindowsAppSDK -Version $WinAppSDKVersion -ConfigFile $tempConfig -OutputDirectory $installDir -NonInteractive -NoCache"
+        Invoke-Expression "nuget $nugetArgs" | Out-Null
+
+        # Parse dependencies from the installed folders
+        # Folder structure is typically {PackageId}.{Version}
+        $directories = Get-ChildItem -Path $installDir -Directory
+        $allLocalPackages = @()
+        foreach ($dir in $directories) {
+            # Match any package pattern: PackageId.Version
+            if ($dir.Name -match "^(.+?)\.(\d+\..*)$") {
+                $pkgId = $Matches[1]
+                $pkgVer = $Matches[2]
+                $allLocalPackages += $pkgId
+
+                $packageVersions[$pkgId] = $pkgVer
+                Write-Host "Found dependency: $pkgId = $pkgVer"
+            }
+        }
+
+        # Update repo's nuget.config to use localpackages
+        $nugetConfig = Join-Path $rootPath "nuget.config"
+        $configData = Read-FileWithEncoding -Path $nugetConfig
+        [xml]$xml = $configData.Content
+
+        Add-NuGetSourceAndMapping -Xml $xml -Key "localpackages" -Value $installDir -Patterns $allLocalPackages
+
+        $xml.Save($nugetConfig)
+        Write-Host "Updated nuget.config with localpackages mapping."
+    } catch {
+        Write-Warning "Failed to resolve dependencies: $_"
+    } finally {
+        Remove-Item $tempConfig -Force -ErrorAction SilentlyContinue
+    }
+}
+
 # Execute nuget list and capture the output
 if ($useExperimentalVersion) {
     # The nuget list for experimental versions will cost more time
@@ -112,56 +213,36 @@ if ($latestVersion) {
     exit 1
 }
 
-# Update packages.config files
-Get-ChildItem -Path $rootPath -Recurse packages.config | ForEach-Object {
-    $file = Read-FileWithEncoding -Path $_.FullName
-    $content = $file.Content
-    if ($content -match 'package id="Microsoft.WindowsAppSDK"') {
-        $newVersionString = 'package id="Microsoft.WindowsAppSDK" version="' + $WinAppSDKVersion + '"'
-        $oldVersionString = 'package id="Microsoft.WindowsAppSDK" version="[-.0-9a-zA-Z]*"'
-        $content = $content -replace $oldVersionString, $newVersionString
-        Write-FileWithEncoding -Path $_.FullName -Content $content -Encoding $file.encoding
-        Write-Host "Modified " $_.FullName 
-    }
-}
+# Resolve dependencies for 1.8+
+$packageVersions = @{ "Microsoft.WindowsAppSDK" = $WinAppSDKVersion }
+
+Resolve-WinAppSdkSplitDependencies
 
 # Update Directory.Packages.props file
 Get-ChildItem -Path $rootPath -Recurse "Directory.Packages.props" | ForEach-Object {
     $file = Read-FileWithEncoding -Path $_.FullName
     $content = $file.Content
-    if ($content -match '<PackageVersion Include="Microsoft.WindowsAppSDK"') {
-        $newVersionString = '<PackageVersion Include="Microsoft.WindowsAppSDK" Version="' + $WinAppSDKVersion + '" />'
-        $oldVersionString = '<PackageVersion Include="Microsoft.WindowsAppSDK" Version="[-.0-9a-zA-Z]*" />'
-        $content = $content -replace $oldVersionString, $newVersionString
+    $isModified = $false
+    
+    foreach ($pkgId in $packageVersions.Keys) {
+        $ver = $packageVersions[$pkgId]
+        # Escape dots in package ID for regex
+        $pkgIdRegex = $pkgId -replace '\.', '\.'
+        
+        $newVersionString = "<PackageVersion Include=""$pkgId"" Version=""$ver"" />"
+        $oldVersionString = "<PackageVersion Include=""$pkgIdRegex"" Version=""[-.0-9a-zA-Z]*"" />"
+
+        if ($content -match "<PackageVersion Include=""$pkgIdRegex""") {
+            # Update existing package
+            if ($content -notmatch [regex]::Escape($newVersionString)) {
+                $content = $content -replace $oldVersionString, $newVersionString
+                $isModified = $true
+            }
+        }
+    }
+
+    if ($isModified) {
         Write-FileWithEncoding -Path $_.FullName -Content $content -Encoding $file.encoding
         Write-Host "Modified " $_.FullName
     }
 }
-
-# Update .vcxproj files
-Get-ChildItem -Path $rootPath -Recurse *.vcxproj | ForEach-Object {
-    $file = Read-FileWithEncoding -Path $_.FullName
-    $content = $file.Content
-    if ($content -match '\\Microsoft.WindowsAppSDK.') {
-        $newVersionString = '\Microsoft.WindowsAppSDK.' + $WinAppSDKVersion
-        $oldVersionString = '\\Microsoft.WindowsAppSDK.(?=[-.0-9a-zA-Z]*\d)[-.0-9a-zA-Z]*'    #positive lookahead for at least a digit
-        $content = $content -replace $oldVersionString, $newVersionString
-        Write-FileWithEncoding -Path $_.FullName -Content $content -Encoding $file.encoding
-        Write-Host "Modified " $_.FullName
-    }
-}
-
-# Update .csproj files
-Get-ChildItem -Path $rootPath -Recurse *.csproj | ForEach-Object {
-    $file = Read-FileWithEncoding -Path $_.FullName
-    $content = $file.Content
-    if ($content -match 'PackageReference Include="Microsoft.WindowsAppSDK"') {
-        $newVersionString = 'PackageReference Include="Microsoft.WindowsAppSDK" Version="'+ $WinAppSDKVersion + '"'
-        $oldVersionString = 'PackageReference Include="Microsoft.WindowsAppSDK" Version="[-.0-9a-zA-Z]*"'
-        $content = $content -replace $oldVersionString, $newVersionString
-        Write-FileWithEncoding -Path $_.FullName -Content $content -Encoding $file.encoding
-        Write-Host "Modified " $_.FullName 
-    }
-}
-
-Update-NugetConfig

.pipelines/v2/ci-using-the-latest-winappsdk.yml

@@ -19,7 +19,7 @@ parameters:
   - name: enableMsBuildCaching
     type: boolean
     displayName: "Enable MSBuild Caching"
-    default: true
+    default: false
   - name: runTests
     type: boolean
     displayName: "Run Tests"
@@ -33,7 +33,7 @@ parameters:
     default: true
   - name: winAppSDKVersionNumber
     type: string
-    default: 1.7
+    default: 1.8
   - name: useExperimentalVersion
     type: boolean
     default: false

.pipelines/v2/templates/job-build-project.yml

@@ -129,7 +129,7 @@ jobs:
       MSBuildMainBuildTargets: Build
     ${{ insert }}: ${{ parameters.variables }}
     ${{ if eq(parameters.useLatestWinAppSDK, true) }}:
-      RestoreAdditionalProjectSourcesArg: '/p:RestoreAdditionalProjectSources="$(Build.SourcesDirectory)\localpackages\NugetPackages"'
+      RestoreAdditionalProjectSourcesArg: '/p:RestoreAdditionalProjectSources="$(Build.SourcesDirectory)\localpackages\NugetPackages" /p:IgnoreExperimentalWarnings=true'
     ${{ else }}:
       RestoreAdditionalProjectSourcesArg: ''
   displayName: Build

.pipelines/v2/templates/steps-update-winappsdk-and-restore-nuget.yml

@@ -19,48 +19,20 @@ steps:
       -useExperimentalVersion $${{ parameters.useExperimentalVersion }}
       -rootPath "$(build.sourcesdirectory)"
 
-- script: echo $(WinAppSDKVersion)
-  displayName: 'Display WinAppSDK Version Found'
+# - task: NuGetCommand@2
+#   displayName: 'Restore NuGet packages (slnx)'
+#   inputs:
+#     command: 'restore'
+#     feedsToUse: 'config'
+#     nugetConfigPath: '$(build.sourcesdirectory)\nuget.config'
+#     restoreSolution: '$(build.sourcesdirectory)\**\*.slnx'
+#     includeNuGetOrg: false
 
-- task: DownloadPipelineArtifact@2
-  displayName: 'Download WindowsAppSDK'
-  inputs:
-    buildType: 'specific'
-    project: '55e8140e-57ac-4e5f-8f9c-c7c15b51929d'
-    definition: '104083'
-    buildVersionToDownload: 'latestFromBranch'
-    branchName: 'refs/heads/release/${{ parameters.versionNumber }}-stable'
-    artifactName: 'WindowsAppSDK_Nuget_And_MSIX'
-    targetPath: '$(Build.SourcesDirectory)\localpackages'
-
-- script: dir $(Build.SourcesDirectory)\localpackages\NugetPackages
-  displayName: 'List downloaded packages'
-
-- task: NuGetCommand@2
-  displayName: 'Install WindowsAppSDK'
-  inputs:
-    command: 'custom'
-    arguments: >
-      install "Microsoft.WindowsAppSDK"
-      -Source "$(Build.SourcesDirectory)\localpackages\NugetPackages"
-      -Version "$(WinAppSDKVersion)"
-      -OutputDirectory "$(Build.SourcesDirectory)\localpackages\output"
-      -FallbackSource "https://microsoft.pkgs.visualstudio.com/ProjectReunion/_packaging/Project.Reunion.nuget.internal/nuget/v3/index.json"
-
-- task: NuGetCommand@2
-  displayName: 'Restore NuGet packages'
+- task: DotNetCoreCLI@2
+  displayName: 'Restore NuGet packages (dotnet)'
   inputs:
     command: 'restore'
+    projects: '$(build.sourcesdirectory)\**\*.slnx'
     feedsToUse: 'config'
     nugetConfigPath: '$(build.sourcesdirectory)\nuget.config'
-    restoreSolution: '$(build.sourcesdirectory)\**\*.sln'
-    includeNuGetOrg: false
-
-- task: NuGetCommand@2
-  displayName: 'Restore NuGet packages (slnx)'
-  inputs:
-    command: 'restore'
-    feedsToUse: 'config'
-    nugetConfigPath: '$(build.sourcesdirectory)\nuget.config'
-    restoreSolution: '$(build.sourcesdirectory)\**\*.slnx'
-    includeNuGetOrg: false
+    workingDirectory: '$(build.sourcesdirectory)'

Directory.Build.targets

@@ -24,4 +24,8 @@
 
     <MSBuild Projects="$(MSBuildProjectFullPath)" Targets="Restore" Properties="RestoreInProgress=true" BuildInParallel="false" />
   </Target>
+
+  <PropertyGroup Condition="'$(IgnoreExperimentalWarnings)' == 'true'">
+    <NoWarn>$(NoWarn);CS8305;SA1500;CA1852</NoWarn>
+  </PropertyGroup>
 </Project>

src/modules/cmdpal/Microsoft.CmdPal.UI/Controls/WrapPanelCustom/WrapPanel.cs

@@ -8,6 +8,8 @@ using Microsoft.UI.Xaml;
 using Microsoft.UI.Xaml.Controls;
 using Windows.Foundation;
 
+using ToolkitStretchChild = CommunityToolkit.WinUI.Controls.StretchChild;
+
 namespace Microsoft.CmdPal.UI.Controls;
 
 /// <summary>
@@ -177,9 +179,9 @@ public sealed partial class WrapPanel : Panel
     /// <summary>
     /// Gets or sets a value indicating how to arrange child items
     /// </summary>
-    public StretchChild StretchChild
+    public ToolkitStretchChild StretchChild
     {
-        get { return (StretchChild)GetValue(StretchChildProperty); }
+        get { return (ToolkitStretchChild)GetValue(StretchChildProperty); }
         set { SetValue(StretchChildProperty, value); }
     }
 
@@ -190,9 +192,9 @@ public sealed partial class WrapPanel : Panel
     public static readonly DependencyProperty StretchChildProperty =
         DependencyProperty.Register(
             nameof(StretchChild),
-            typeof(StretchChild),
+            typeof(ToolkitStretchChild),
             typeof(WrapPanel),
-            new PropertyMetadata(StretchChild.None, LayoutPropertyChanged));
+            new PropertyMetadata(ToolkitStretchChild.None, LayoutPropertyChanged));
 
     /// <summary>
     /// Identifies the IsFullLine attached dependency property.
@@ -397,7 +399,7 @@ public sealed partial class WrapPanel : Panel
             Arrange(Children[i]);
         }
 
-        Arrange(Children[lastIndex], StretchChild == StretchChild.Last);
+        Arrange(Children[lastIndex], StretchChild == ToolkitStretchChild.Last);
 
         if (currentRow.ChildrenRects.Count > 0)
         {