Manual retention policy when a variable has been used for the package to be deployed

RetentionPolicyByDeploymentJournal_3_x.ps1

$deploymentJournalPath = Get-Item $env:TentacleJournal
if($deploymentJournalPath) {
    $itemsToKeep = $null
    $useItemsToKeep = [System.Int32]::TryParse($OctopusParameters["OctopusRetentionPolicyItemsToKeep"], [ref]$itemsToKeep)
    if(-not $useItemsToKeep) {
        Write-Host "Could not find the number of deployments to keep, ensure the lifecycle is set to keep a limited number of releases"
        return
    }
    
    $projectId = $OctopusParameters["Octopus.Project.Id"]
    [xml]$deploymentJournal = Get-Content $deploymentJournalPath.FullName
    $deployments = $deploymentJournal.Deployments.Deployment `
        | ? { $_.ProjectId -eq $projectId } `
        | Sort-Object InstalledOn -Descending `
        | Select-Object -Skip $itemsToKeep `
        | % {
            if(Test-Path $_.ExtractedTo) {
                Write-Host "$($_.ExtractedTo) will be removed"
                # Remove-Item -Path $_.ExtractedTo -Recurse -Force -Verbose
            }
            if(Test-Path $_.ExtractedFrom) {
                Write-Host "$($_.ExtractedFrom) will be removed"
                # Remove-Item -Path $_.ExtractedFrom -Force -Verbose
            }
        }
} else {
    Write-Host "Could not find 'DeploymentJournal.xml'"
}