build.ps1: repair Get-Dependencies and silence output further

This cleans up the output spew during the dependency fetching phase to
simply list that the dependencies have successfully been acquired.
Additionally, restore the accidentally removed variable that is
currently breaking the ARM64 builds.

Author: compnerd

utils/build.ps1

@@ -1131,6 +1131,7 @@ function Get-Dependencies {
       Write-Host " $Description"
     }
 
+    $Stopwatch = [Diagnostics.Stopwatch]::StartNew()
     Write-Host "[$([DateTime]::Now.ToString("yyyy-MM-dd HH:mm:ss"))] Get-Dependencies ..." -ForegroundColor Cyan
     $ProgressPreference = "SilentlyContinue"
 
@@ -1141,7 +1142,7 @@ function Get-Dependencies {
         return
       }
 
-      Write-Output "$Destination not found. Downloading ..."
+      # Write-Output "$Destination not found. Downloading ..."
       if ($ToBatch) {
         Write-Output "md `"$(Split-Path -Path $Destination -Parent)`""
         Write-Output "curl.exe -sL $URL -o $Destination"
@@ -1174,7 +1175,7 @@ function Get-Dependencies {
           $ExtractedLastWriteTime = (Get-Item $Destination).LastWriteTime
           # Compare the last write times
           if ($ZipLastWriteTime -le $ExtractedLastWriteTime) {
-              Write-Output "'$ZipFileName' is already extracted and up to date."
+              # Write-Output "'$ZipFileName' is already extracted and up to date."
               return
           }
       }
@@ -1279,7 +1280,7 @@ function Get-Dependencies {
 
     function Test-PythonModuleInstalled([string] $ModuleName) {
       try {
-        Invoke-Program -Silent "$(Get-PythonExecutable)" -c "import $ModuleName"
+        Invoke-Program -Silent "$(Get-PythonExecutable)" -c "import importlib.util, sys; sys.exit(0 if importlib.util.find_spec('$ModuleName') else 1)"
         return $true
       } catch {
         return $false