Imported Upstream version 6.10.0.49

Former-commit-id: 1d6753294b2993e1fbf92de9366bb9544db4189b

external/linker/eng/common/darc-init.ps1

@@ -1,13 +1,14 @@
 param (
     $darcVersion = $null,
-    $versionEndpoint = "https://maestro-prod.westus2.cloudapp.azure.com/api/assets/darc-version?api-version=2019-01-16",
-    $verbosity = "m"
+    $versionEndpoint = 'https://maestro-prod.westus2.cloudapp.azure.com/api/assets/darc-version?api-version=2019-01-16',
+    $verbosity = 'minimal',
+    $toolpath = $null
 )
 
 . $PSScriptRoot\tools.ps1
 
 function InstallDarcCli ($darcVersion) {
-  $darcCliPackageName = "microsoft.dotnet.darc"
+  $darcCliPackageName = 'microsoft.dotnet.darc'
 
   $dotnetRoot = InitializeDotNetCli -install:$true
   $dotnet = "$dotnetRoot\dotnet.exe"
@@ -26,8 +27,19 @@ function InstallDarcCli ($darcVersion) {
   $arcadeServicesSource = 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-tools/nuget/v3/index.json'
 
   Write-Host "Installing Darc CLI version $darcVersion..."
-  Write-Host "You may need to restart your command window if this is the first dotnet tool you have installed."
-  & "$dotnet" tool install $darcCliPackageName --version $darcVersion --add-source "$arcadeServicesSource" -v $verbosity -g
+  Write-Host 'You may need to restart your command window if this is the first dotnet tool you have installed.'
+  if (-not $toolpath) {
+    & "$dotnet" tool install $darcCliPackageName --version $darcVersion --add-source "$arcadeServicesSource" -v $verbosity -g
+  }else {
+    & "$dotnet" tool install $darcCliPackageName --version $darcVersion --add-source "$arcadeServicesSource" -v $verbosity --tool-path "$toolpath"
+  }
 }
 
-InstallDarcCli $darcVersion
+try {
+  InstallDarcCli $darcVersion
+}
+catch {
+  Write-Host $_.ScriptStackTrace
+  Write-PipelineTelemetryError -Category 'Darc' -Message $_
+  ExitWithExitCode 1
+}