utils: update WiX and fetch if packaging

Skip fetching and extracting WiX if not packaging. Skip fetching the
pinned toolchain and NDK if not building.

Author: compnerd

utils/build.ps1

@@ -172,6 +172,9 @@ $vswhere = "${env:ProgramFiles(x86)}\Microsoft Visual Studio\Installer\vswhere.e
 $VSInstallRoot = & $vswhere -nologo -latest -products "*" -all -prerelease -property installationPath
 $msbuild = "$VSInstallRoot\MSBuild\Current\Bin\$BuildArchName\MSBuild.exe"
 
+# Hoist to global scope as this is used in two sites.
+$WiXVersion = "4.0.5"
+
 # Avoid $env:ProgramFiles in case this script is running as x86
 $UnixToolsBinDir = "$env:SystemDrive\Program Files\Git\usr\bin"
 
@@ -621,7 +624,8 @@ function Fetch-Dependencies {
   }
 
   function Extract-ZipFile {
-    param (
+    param
+    (
         [string]$ZipFileName,
         [string]$BinaryCache,
         [string]$ExtractPath
@@ -647,7 +651,8 @@ function Fetch-Dependencies {
   }
 
   function Extract-Toolchain {
-    param (
+    param
+    (
         [string]$InstallerExeName,
         [string]$BinaryCache,
         [string]$ToolchainName
@@ -678,13 +683,15 @@ function Fetch-Dependencies {
     }
   }
 
-  $WiXVersion = "4.0.4"
+  if ($SkipBuild -and $SkipPackaging) { return }
+
   $WiXURL = "https://www.nuget.org/api/v2/package/wix/$WiXVersion"
-  $WiXHash = "A9CA12214E61BB49430A8C6E5E48AC5AE6F27DC82573B5306955C4D35F2D34E2"
+  $WiXHash = "DF9BDB347183716F82EFE2CECB8C54BB3554AA907A69F47A41741D6FA4D0A754"
   DownloadAndVerify $WixURL "$BinaryCache\WiX-$WiXVersion.zip" $WiXHash
-
   Extract-ZipFile WiX-$WiXVersion.zip $BinaryCache WiX-$WiXVersion
 
+  if ($SkipBuild) { return }
+
   DownloadAndVerify $PinnedBuild "$BinaryCache\$PinnedToolchain.exe" $PinnedSHA256
 
   # TODO(compnerd) stamp/validate that we need to re-extract
@@ -2376,15 +2383,13 @@ function Stage-BuildArtifacts($Arch) {
   } else {
     New-Item -Type Directory -Path "$($Arch.BinaryCache)\installer\$($Arch.VSName)\" -ErrorAction Ignore | Out-Null
   }
-  Invoke-Program "$BinaryCache\wix-4.0.4\tools\net6.0\any\wix.exe" -- burn detach "$($Arch.BinaryCache)\installer\Release\$($Arch.VSName)\installer.exe" -engine "$Stage\installer-engine.exe" -intermediateFolder "$($Arch.BinaryCache)\installer\$($Arch.VSName)\"
+  Invoke-Program "$BinaryCache\wix-$WiXVersion\tools\net6.0\any\wix.exe" -- burn detach "$($Arch.BinaryCache)\installer\Release\$($Arch.VSName)\installer.exe" -engine "$Stage\installer-engine.exe" -intermediateFolder "$($Arch.BinaryCache)\installer\$($Arch.VSName)\"
 }
 
 #-------------------------------------------------------------------
 try {
 
-if (-not $SkipBuild) {
-  Fetch-Dependencies
-}
+Fetch-Dependencies
 
 if (-not $SkipBuild) {
   Invoke-BuildStep Build-CMark $BuildArch