Fix packages manager to show DOTS and etc

DisablePreviewPackageWarning.cs

//https://forum.unity.com/threads/package-manager-showing-hidden-packages-script.995506/
using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using UnityEditor;
using UnityEditor.PackageManager.UI;
using UnityEngine;
using Object = UnityEngine.Object;
 
public static class DisablePreviewPackageWarning
{
    [InitializeOnLoadMethod]
    static void Init()
    {
        var prefsType = typeof(PackageManagerExtensions).Assembly.GetType("UnityEditor.PackageManager.UI.PackageManagerPrefs");
 
#if UNITY_2020_2_OR_NEWER
        var serviceContainerType = typeof(PackageManagerExtensions).Assembly.GetType("UnityEditor.PackageManager.UI.ServicesContainer");
        var serviceContainer = serviceContainerType.BaseType.GetProperty("instance", BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Static).GetValue(null);
        var prefsInstance = serviceContainerType.GetMethod("Resolve").MakeGenericMethod(prefsType).Invoke(serviceContainer, null);
#else
        var prefsInstance = prefsType.GetProperty("instance", BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Static).GetValue(null) as Object;
#endif
        var property = prefsInstance.GetType().GetProperty("dismissPreviewPackagesInUse", BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance);
        property.SetValue(prefsInstance, true);
    }
}
 

DiscoverExtraPackages.cs

//https://forum.unity.com/threads/package-manager-showing-hidden-packages-script.995506/
using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using UnityEditor;
using UnityEditor.PackageManager;
using UnityEditor.PackageManager.Requests;
using UnityEditor.PackageManager.UI;
using Object = UnityEngine.Object;
using PackageInfo = UnityEditor.PackageManager.PackageInfo;
 
public static class DiscoverExtraPackages
{
    static string[] m_extraPackages = new string[]
    {
        "com.ptc.vuforia.engine",
        "com.unity.2d.entities",
        "com.unity.ai.planner",
        "com.unity.aovrecorder",
        "com.unity.assetbundlebrowser",
        "com.unity.assetgraph",
        "com.unity.barracuda",
        "com.unity.barracuda.burst",
        "com.unity.build-report-inspector",
        "com.unity.cloud.userreporting",
        "com.unity.collections",
        "com.unity.connect.share",
        "com.unity.dots.editor",
        "com.unity.entities",
        "com.unity.film-tv.toolbox",
        "com.unity.google.resonance.audio",
        "com.unity.immediate-window",
        "com.unity.mathematics",
        "com.unity.meshsync",
        "com.unity.multiplayer-hlapi",
        "com.unity.package-manager-doctools",
        "com.unity.package-manager-ui",
        "com.unity.package-validation-suite",
        "com.unity.physics",
        "com.unity.platforms",
        "com.unity.platforms.android",
        "com.unity.platforms.linux",
        "com.unity.platforms.macos",
        "com.unity.platforms.web",
        "com.unity.platforms.windows",
        "com.unity.playablegraph-visualizer",
        "com.unity.render-pipelines.lightweight",
        "com.unity.rendering.hybrid",
        "com.unity.renderstreaming",
        "com.unity.scene-template",
        "com.unity.simulation.client",
        "com.unity.simulation.core",
        "com.unity.simulation.capture",
        "com.unity.simulation.games",
        "com.unity.standardevents",
        "com.unity.streaming-image-sequence",
        "com.unity.test-framework.performance",
        "com.unity.tiny.all",
        "com.unity.transport",
        "com.unity.upm.develop",
        "com.unity.vectorgraphics",
        "com.unity.webrtc",
        "com.unity.xr.googlevr.android",
        "com.unity.xr.googlevr.ios",
        "com.unity.xr.legacyinputhelpers",
        "com.unity.xr.oculus.android",
        "com.unity.xr.oculus.standalone",
        "com.unity.xr.openvr.standalone",
        "com.unity.xr.arsubsystems",
        "com.unity.xr.interactionsubsystems",
        "com.unity.xr.windowsmr.metro",
    };
 
    static readonly Type m_cacheType = typeof(PackageManagerExtensions).Assembly.GetType("UnityEditor.PackageManager.UI.UpmCache");
    static readonly Type m_cacheInterfaceType = typeof(PackageManagerExtensions).Assembly.GetType("UnityEditor.PackageManager.UI.IUpmCache");
    static readonly PropertyInfo m_getPackageInfos = m_cacheType.GetProperty("searchPackageInfos") ?? m_cacheInterfaceType.GetProperty("searchPackageInfos");
    static readonly MethodInfo m_setPackageInfos = m_cacheType.GetMethod("SetSearchPackageInfos") ?? m_cacheInterfaceType.GetMethod("SetSearchPackageInfos");
    static readonly PropertyInfo m_operationInProgress = typeof(PackageManagerExtensions).Assembly.GetType("UnityEditor.PackageManager.UI.IOperation").GetProperty("isInProgress");
    static readonly Type serviceContainerType = typeof(PackageManagerExtensions).Assembly.GetType("UnityEditor.PackageManager.UI.ServicesContainer");
    static readonly Func<object> m_serviceContainerGetter = (Func<object>)serviceContainerType?.BaseType.GetProperty("instance", BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Static).GetGetMethod().CreateDelegate(typeof(Func<object>));
    static readonly Func<object> m_upmCacheGetter = CreateUpmCacheGetter();
 
    static readonly EditorApplication.CallbackFunction m_callback = OnProgress;
    static readonly List<SearchRequest> m_requests = new List<SearchRequest>(32);
 
    static object m_searchAllOperation;
 
    static Func<object> CreateUpmCacheGetter()
    {
#if UNITY_2020_2_OR_NEWER
        return (Func<object>)serviceContainerType.GetMethod("Resolve").MakeGenericMethod(m_cacheType).CreateDelegate(typeof(Func<object>), m_serviceContainerGetter());
#else
        return (Func<object>)m_cacheType.GetProperty("instance").GetGetMethod().CreateDelegate(typeof(Func<object>));
#endif
    }
 
    [InitializeOnLoadMethod]
    static void Init()
    {
        // Hook package manager SearchAll operation
        var clientType = typeof(PackageManagerExtensions).Assembly.GetType("UnityEditor.PackageManager.UI.UpmClient");
#if UNITY_2020_2_OR_NEWER
        var instance = serviceContainerType.GetMethod("Resolve").MakeGenericMethod(clientType).Invoke(m_serviceContainerGetter(), null);
#else
        var instance = clientType.GetProperty("instance", BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Static).GetValue(null) as Object;
#endif
        var evnt = instance.GetType().GetEvent("onSearchAllOperation");
        evnt.AddEventHandler(instance, Delegate.CreateDelegate(evnt.EventHandlerType, new Action<object>(OnSearchAll).Method));
    }
 
    static void OnSearchAll(object operation)
    {
        m_searchAllOperation = operation;
 
        // Clear requests, in case any searches are running, they will finish without doing anything
        m_requests.Clear();
 
        // Kick off searching
        foreach (var id in m_extraPackages)
        {
            m_requests.Add(Client.Search(id));
        }
 
        // Re-register update callback
        EditorApplication.update -= m_callback;
        EditorApplication.update += m_callback;
    }
 
    private static void OnProgress()
    {
        // Wait for all requests to complete and for SearchAll opeartion to finish
        if (m_requests.All(s => s.IsCompleted) && !(bool)m_operationInProgress.GetValue(m_searchAllOperation))
        {
            // Then add results
            var cache = m_upmCacheGetter();
            var packages = ((IEnumerable<PackageInfo>)m_getPackageInfos.GetValue(cache));
            var everything = m_requests.Where(s => s.Status == StatusCode.Success).SelectMany(s => s.Result).Union(packages);
            m_setPackageInfos.Invoke(cache, new object[] { everything });
 
            EditorApplication.update -= m_callback;
            m_requests.Clear();
            m_searchAllOperation = null;
        }
    }
}