Experimental Appx resource discovery extension

Author: Steve Lee (POWERSHELL HE/HIM) (from Dev Box)

build.ps1

@@ -38,6 +38,8 @@ if ($GetPackageVersion) {
 }
 
 $filesForWindowsPackage = @(
+    'appx.dsc.extension.json',
+    'appx-discover.ps1',
     'dsc.exe',
     'dsc_default.settings.json',
     'dsc.settings.json',
@@ -250,7 +252,7 @@ if (!$SkipBuild) {
     }
 
     # make sure dependencies are built first so clippy runs correctly
-    $windows_projects = @("pal", "registry", "reboot_pending", "wmi-adapter", "configurations/windows")
+    $windows_projects = @("pal", "registry", "reboot_pending", "wmi-adapter", "configurations/windows", 'extensions/appx')
     $macOS_projects = @("resources/brew")
     $linux_projects = @("resources/apt")
 

extensions/appx/appx-discover.ps1

@@ -0,0 +1,5 @@
+Get-AppxPackage | ForEach-Object {
+    Get-ChildItem -LiteralPath $_.InstallLocation -File -Include '*.dsc.resource.json','*.dsc.resource.yaml','*.dsc.resource.yml' | ForEach-Object {
+        @{ resourceManifestPath = $_.FullName } | ConvertTo-Json -Compress
+    }
+}

extensions/appx/appx.dsc.extension.json

@@ -0,0 +1,17 @@
+{
+    "$schema": "https://aka.ms/dsc/schemas/v3/bundled/resource/manifest.json",
+    "type": "Microsoft.Windows.AppX/Discover",
+    "version": "0.1.0",
+    "description": "Discovers DSC resources packaged as AppX packages.",
+    "author": "Microsoft Corporation",
+    "discover": {
+        "executable": "pwsh",
+        "args": [
+            "-NoLogo",
+            "-NonInteractive",
+            "-NoProfile",
+            "-Command",
+            "./appx-discover.ps1"
+            ]
+    }
+}

extensions/appx/copy_files.txt

@@ -0,0 +1,2 @@
+appx-discover.ps1
+appx.dsc.extension.json