Events.registeredPackages

Parameters

Description

Event raised after applying changes to the registered packages list.

This event triggers after the asset database refresh completes, which occurs after scripts compile and the domain reloads, if necessary. When you add, update, or remove a package that contains code, a domain reload occurs, which resets registered event handlers. To ensure that your event handler is called, use InitializeOnLoadAttribute or InitializeOnLoadMethodAttribute to register the event handler after the domain reload occurs but before the event triggers.
Note: There is no guarantee that the AssetPostprocessor will finish by the time this event is raised, so don't rely on the execution order for post-processing events.

using UnityEngine;
using UnityEditor;
using UnityEditor.PackageManager;

[ExecuteInEditMode]
public class PackageRegistrationExample : MonoBehaviour
{
    static PackageRegistrationExample()
    {
        Events.registeredPackages += OnPackagesRegistered;
    }
    
    void Start()
    {
        Client.Add("com.unity.textmeshpro");
    }

    static void OnPackagesRegistered(PackageRegistrationEventArgs args)
    {
        // Report added packages
        if (args.added.Count > 0)
        {
            Debug.Log("Packages added:");
            foreach (var package in args.added)
            {
                Debug.Log($"- {package.name} ({package.version})");
            }
        }

        // Report removed packages
        if (args.removed.Count > 0)
        {
            Debug.Log("Packages removed:");
            foreach (var package in args.removed)
            {
                Debug.Log($"- {package.name}");
            }
        }

        // Report changed packages
        for (int i = 0; i < args.changedFrom.Count; i++)
        {
            var oldPackage = args.changedFrom[i];
            var newPackage = args.changedTo[i];
            Debug.Log($"Package updated: {oldPackage.name}" +
                $"\nFrom: {oldPackage.version}" +
                $"\nTo: {newPackage.version}");
        }
    }
}

Related information

• Events.registeringPackages
• PackageRegistrationEventArgs
• Client.Add