Installing a dependent version of PowerShell

Question

How do I tell DSC that I need to update PowerShell itself, first?

Do I just use a Script Resource and install chocolatey and then use choco to install latest WMF/PowerShell?

Answer 1

I've written a sample to do this. I'm assuming you are on PowerShell 4.0 and want to update to 5.0, but the concept is the same. Here is the link to the complete sample.

Set-ExecutionPolicy remotesigned
Set-WSManQuickConfig -Force
$nugetPath = Join-Path $env:temp nuget.exe
if(!(Test-Path $nugetPath))
{
    Invoke-WebRequest -UseBasicParsing -Uri https://nuget.org/nuget.exe -OutFile $nugetPath
}

&$nugetPath install XWindowsUpdate -source https://www.powershellgallery.com/api/v2 -outputDirectory "$env:programfiles\WindowsPowerShell\Modules\ " -ExcludeVersion 


Configuration WMF5Install
{
   Import-DscResource -ModuleName xWindowsUpdate
   Node localhost
   {
      xHotfix HotfixInstall
      {
          Path = 'E:\WindowsBlue-KB3055381-x64.msu'
          Id = 'KB3055381'
          Ensure = 'Present'
      }
       LocalConfigurationManager
       {
        RebootNodeIfNeeded = $true
       }
   }
}

$outputPath = Join-Path $env:temp Wmf5Install
WMF5Install -OutputPath $outputPath
Set-DscLocalConfigurationManager -Path $outputPath -Verbose
Start-DscConfiguration -Path $outputPath -Wait -Verbose -force