simple script to check if a given choco package and all transitive dependencies are installed

Test-ChocoTransitiveDependencyChain.ps1

[cmdletbinding()]
param(
  $packageName
)
$ErrorActionPreference = 'Stop'

function Test-TransitiveDependencies {
  [cmdletbinding()]
  param($allPackages, $pkgID) 

  $pCheck = $allPackages | Where-Object { $_.package.metadata.id -eq $pkgID }
  if (-Not $pCheck) { 
    throw "required package '$pkgId' not present!"  
  }
  else {
    Write-Verbose "required package $pkgId is present."
  }
  if ($pCheck.package.metadata.dependencies) {
    foreach ($dep in $pCheck.package.metadata.dependencies.dependency) {
      Write-Verbose "$pkgId -> requries '$($dep.id)'"
      Test-TransitiveDependencies -allPackages $allPackages -pkgID $dep.id
    }
  }
}

$allPackages = (Get-ChildItem -Recurse $env:ChocolateyInstall\lib\ -Filter '*.nuspec') | Foreach-Object {
  [xml](Get-Content $_.FullName)
}
$pRoot = $allPackages | Where-Object { $_.package.metadata.id -eq $packageName }
Test-TransitiveDependencies $allPackages $pRoot.package.metadata.id 

note: only checks for ids, no version check is done in this initial version