Packages can be loaded/unloaded. IUnloadableService interface added whose method Unload, if service implements it, will be called when the module is unloaded.

NadekoBot.Core/Modules/Administration/Services/PackagesService.cs

@@ -0,0 +1,31 @@
+using NadekoBot.Services;
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text.RegularExpressions;
+
+namespace NadekoBot.Core.Modules.Administration.Services
+{
+    public class PackagesService : INService
+    {
+        public IEnumerable<string> Packages { get; private set; }
+
+        public PackagesService()
+        {
+            ReloadAvailablePackages();
+        }
+
+        public void ReloadAvailablePackages()
+        {
+            Packages = Directory.GetDirectories(Path.Combine(AppContext.BaseDirectory, "modules\\"), "NadekoBot.Modules.*", SearchOption.AllDirectories)
+                   .SelectMany(x => Directory.GetFiles(x, "NadekoBot.Modules.*.dll"))
+                   .Select(x => Path.GetFileNameWithoutExtension(x))
+                   .Select(x =>
+                   {
+                       var m = Regex.Match(x, @"NadekoBot\.Modules\.(?<name>.*)");
+                       return m.Groups["name"].Value;
+                   });
+        }
+    }
+}