Plugin Runner

pluginrunner.cs

    public interface IActivity
    {
        void Run();
        bool Matches(int i);
    }

    public class PluginRunner
    {
        private readonly IContainer _container;
        private readonly ILogger _logger;

        public PluginRunner(IContainer container, ILogger logger)
        {
            _container = container;
            _logger = logger;
        }

        public void Run()
        {
            //var i = 0;
            foreach (var activity in GetActivities().Where(activity => activity.Matches(1)))
            {
                activity.Run();
                _logger.SetDebug();
            }
        }

        private IEnumerable<IActivity> GetActivities()
        {
            if (Directory.Exists("plugins"))
            {
                _container.Configure(x => x.Scan(y =>
                                                     {
                                                         y.AssembliesFromPath("plugins");
                                                         y.AddAllTypesOf<IActivity>();
                                                     }));
            }

            return _container.GetAllInstances<IActivity>();
        }

    }

Maybe you can change the configuration of your container to operate off of the new assemblies. So rather than a x.AssembliesFromPath(), you can pass in each new assembly so the scan operation is doing something more...let me fork this and show you.

https://gist.github.com/1577334

Then something like this?
https://gist.github.com/1577402