Find NuGet packages across multiple solutions

nuget-usage.ps1

$packagesInUse = @()

[xml] $nugetConfig = [xml](Get-Content nuget.config)
[System.Xml.XmlElement] $nugetConfigRoot = $nugetConfig.get_DocumentElement()
$repositoryPath = $nugetConfigRoot.SelectSingleNode("repositoryPath").InnerText
Write-Host "repositoryPath:" $repositoryPath

[xml] $repositories = [xml](Get-Content $repositoryPath\repositories.config)
[System.Xml.XmlElement] $repositoriesRoot = $repositories.get_DocumentElement()

$packageConfigs = $repositoriesRoot.SelectNodes("repository")

foreach($packageConfig in $packageConfigs)
{
    $packagesConfigPath = $packageConfig.Attributes["path"].Value

    [xml] $packagesConfig = [xml](Get-Content $repositoryPath\$packagesConfigPath)
    [System.Xml.XmlElement] $packagesConfigRoot = $packagesConfig.get_DocumentElement()

    $packages = $packagesConfigRoot.SelectNodes("package")

    foreach($package in $packages)
    {
        $packagesInUse = $packagesInUse + [string] ($package.Attributes["id"].Value + ", " + $package.Attributes["version"].Value + ", " + $packagesConfigPath.Replace("\packages.config","").Replace("..\",""))
    }
}

foreach($packageInUse in $packagesInUse | Sort-Object)
{
    Write-Host $packageInUse
}