Chocolatey command to verify installed package regardless of chocolatey 1/2 version

Chocolatey reworked "choco list" command. Since version 2.0 it no more accepts --lo (=local) argument and every call is considered against local packages.

choco list --lo -e procmon

• Chocolatey 1.1: it lists local package ("1 packages installed.")
• Chocolatey 2.0: error ("Invalid argument --lo. This argument has been removed from the list command and cannot be used.")

choco list -e procmon

• Chocolatey 1.1: it lists remote package ("1 packages found.")
• Chocolatey 2.0: it lists local package ("1 packages installed.")

I use PowerShell scripts to maintain 1000 machines with various chocolatey versions. I need universal command to find if chocolatey package is installed. The command which works regardless on chocolatey version. How to do it?

In both Chocolatey 1.* and 2.*, this should work:

choco list --lo --limit-output -e procmon

The --limit-output (or -r) in this case is restricting the output to a machine-readable delimited format (which I'd suggest using when parsing in PowerShell anyway, rather than matching on "x package found"). You could do something similar to the following:

$Result = choco list --lo -r -e vscode | ConvertFrom-Csv -delimiter "|" -Header Id,Version

Or, to just check that a package is installed:

if (choco list --lo -r -e procmon) {
  Write-Host "'procmon' is installed"
}