PowerShell script to install correct version of Unity for a project

InstallUnity.cmd

@echo off
title Install Unity
echo Just a moment...
powershell -NoProfile -NoLogo -ExecutionPolicy Unrestricted -File PowershellScripts\InstallUnity.ps1 -Project . -Components Windows
pause

InstallUnity.ps1

<#
.Synopsis
   Install the appropriate Unity editor and components for the current project.
.PARAMETER Project
   Path to Unity project
.PARAMETER Components
   List of components to install; must include at least the current platform (e.g., Windows, Mac)
.EXAMPLE
   & InstallUnity.ps1 -Project . -Components Mac,iOS
#>
param([string]$Project, [string[]]$Components)

$ErrorActionPreference = "Stop"

# Install UnitySetup module
If(!(Get-InstalledModule UnitySetup -ErrorAction SilentlyContinue))
{
    Write-Host "Installing latest UnitySetup tools..."
    Install-PackageProvider -Scope CurrentUser -Name NuGet -MinimumVersion 2.8.5.201 -Force
    Install-Module UnitySetup -Scope CurrentUser -Confirm:$False -Force
}

# Get Unity version required by project
Write-Host "Checking for installed version of Unity..."
$RequiredVersion = (Get-UnityProjectInstance $Project).Version

# Check if there's an existing installed version of Unity that matches
if (!(Get-UnitySetupInstance | Select-UnitySetupInstance -Version $RequiredVersion))
{
    # Download and install
    Write-Host "Downloading and installing Unity $RequiredVersion..."
    $Installers = Find-UnitySetupInstaller -Version $RequiredVersion -Components $Components
    $Installers | Format-Table
    Install-UnitySetupInstance -Installers ($Installers)

    # Restart Unity Hub if it's running, since it won't pick up the new
    # editor by itself
    $UnityHub = Get-Process "Unity Hub" -ErrorAction SilentlyContinue
    if ($UnityHub)
    {
        Write-Host "Restarting Unity Hub"
        $UnityHubPath = ($UnityHub | Select-Object -First 1).Path
        $UnityHub | Stop-Process
        Start-Process $UnityHubPath
    }
}

Write-Host "Good to go! (Unity $RequiredVersion)"