[macos] use unxip if available for XCode unpacking (#7992)

images/macos/helpers/Common.Helpers.psm1

@@ -166,3 +166,12 @@ function Get-Architecture {
 
     return $arch
 }
+
+function Test-CommandExists {
+    param
+    (
+        [Parameter(Mandatory)] [string] $Command
+    )
+
+    [boolean] (Get-Command $Command  -ErrorAction 'SilentlyContinue')
+}

images/macos/helpers/Xcode.Installer.psm1

@@ -1,3 +1,4 @@
+Import-Module "$PSScriptRoot/Common.Helpers.psm1"
 Import-Module "$PSScriptRoot/Xcode.Helpers.psm1"
 
 function Install-XcodeVersion {
@@ -86,7 +87,11 @@ function Expand-XcodeXipArchive {
 
     Write-Host "Extracting Xcode from '$xcodeXipPath'"
     Push-Location $DownloadDirectory
-    Invoke-ValidateCommand "xip -x $xcodeXipPath"
+    if(Test-CommandExists 'unxip') {
+        Invoke-ValidateCommand "unxip $xcodeXipPath"
+    } else {
+        Invoke-ValidateCommand "xip -x $xcodeXipPath"
+    }
     Pop-Location
 
     if (Test-Path "$DownloadDirectory/Xcode-beta.app") {

images/macos/toolsets/toolset-12.json

@@ -202,7 +202,8 @@
             "tcl-tk",
             "r",
             "yq",
-            "imagemagick"
+            "imagemagick",
+            "unxip"
         ],
         "cask_packages": [
             "julia",

images/macos/toolsets/toolset-13.json

@@ -74,7 +74,8 @@
             "zstd",
             "gmp",
             "r",
-            "yq"
+            "yq",
+            "unxip"
         ],
         "cask_packages": [
             "julia",