How to use Powershell 7 from AzureDevops with AWS Tools

Question

I am writing a powershell script and would like to take advantage of the 7.0 version of Powershell. Specifically because I need access to the new features of CovertFrom-Json that are not available in 5.1. My script has the following command: get-host | select version. The log output shows the version is 5.1. The Agent is a windows-2019 (2020 isn't available in the drop down). The task is a AWS Tools for Windows PowerShell Script task. Is there a way I can get my script to run in an environment on DevOps to make use of PS 7?

Answer 1

You have it already installed there. Please compare this:

pool:
  vmImage: windows-latest

steps:
- powershell: $PSVersionTable.PSVersion
- pwsh: $PSVersionTable.PSVersion
- pwsh: |
    '{ "key":"value1", "Key":"value2" }' | ConvertFrom-Json -AsHashtable

powershell task gives you:

Major  Minor  Build  Revision
-----  -----  -----  --------
5      1      17763  1852    

but pwsh:

Major  Minor  Patch  PreReleaseLabel BuildLabel
-----  -----  -----  --------------- ----------
7      1      3  

But AWS Tools for Windows PowerShell Script doesn't support Powershell Core. And looking at this that there is no way to replace powershell with pwsh making the second a default shell. In this case I would recommend to create a feature request for AWS Tools for Windows PowerShell Script

However, you can still install AWS Toolkit and use it from pwsh task as follows:

- pwsh: Install-Module -name AWSPowerShell.NetCore -Scope CurrentUser -Force
- pwsh: |
    Import-Module AWSPowerShell.NetCore
    Get-Module -ListAvailable

    Get-AWSPowerShellVersion