Confirming before installing choco and improving prompt message

build.psm1

@@ -609,6 +609,8 @@ function Start-PSBootstrap {
             elseif(($cmakePresent -eq $false) -or ($sdkPresent -eq $false)) 
             {
                 log "Chocolatey not present. Installing chocolatey."
+                if ($Force -or $PSCmdlet.ShouldProcess("Install chocolatey via https://chocolatey.org/install.ps1")) 
+                {
                     Invoke-Expression ((new-object net.webclient).DownloadString('https://chocolatey.org/install.ps1'))
                 
                     if (-not ($machinePath.ToLower().Contains($chocolateyPath.ToLower())))
@@ -623,6 +625,12 @@ function Start-PSBootstrap {
                     }
                 }
                 else
+                {
+                    Write-Error "Chocolatey is required to install missing dependencies. Please install it from https://chocolatey.org/ manually. Alternatively, install cmake and Windows 10 SDK."
+                    return $null
+                }
+            }
+            else
             {
                 log "Skipping installation of chocolatey, cause both cmake and Win 10 SDK are present."
             }
@@ -667,7 +675,7 @@ function Start-PSBootstrap {
             if ($newMachineEnvironmentPath -ne $machinePath)
             {
                 log "Updating Path machine environment variable"
-                if ($Force -or $PSCmdlet.ShouldProcess("Update Path machine environment variable")) 
+                if ($Force -or $PSCmdlet.ShouldProcess("Update Path machine environment variable to $newMachineEnvironmentPath")) 
                 {
                     [Environment]::SetEnvironmentVariable('Path', $newMachineEnvironmentPath, 'MACHINE')
                 }