Nancy running on the Owin pipeline using HttpListener

ConsoleApp.cs

using System;
using System.Collections.Generic;
using System.Threading.Tasks;
using Microsoft.Owin.Hosting;
using Nancy;
using Nancy.Bootstrapper;
using Nancy.Hosting.Owin;
using Owin;

namespace NancyOwin
{
  class Program
  {
    static void Main(string[] args)
    {
      var url = "http://+:8080";

      using (WebApplication.Start<Startup>(url))
      {
        Console.WriteLine("Running on http://localhost:8080");
        Console.WriteLine("Press enter to exit");
        Console.ReadLine();
      }
    }
  }

  public class Startup
  {
    public void Configuration(IAppBuilder app)
    {
      app.RunNancy();  //Uses an extension method that adds Nancy at the end of an Owin pipeline
    }
  }

  public static class NancyOwinAppBuilderExtensions
  {
    public static IAppBuilder RunNancy(this IAppBuilder builder)
    {
      return RunNancy(builder, new DefaultNancyBootstrapper());
    }

    public static IAppBuilder RunNancy(this IAppBuilder builder, INancyBootstrapper bootstrapper)
    {
      var nancyOwinHost = new NancyOwinHost(bootstrapper);
      return RunNancy(builder, nancyOwinHost);
    }

    public static IAppBuilder RunNancy(this IAppBuilder builder, NancyOwinHost host)
    {
      return RunApp(builder, host.ProcessRequest);
    }

    private static IAppBuilder RunApp(IAppBuilder builder, Func<IDictionary<string, object>, Task> app)
    {
      return UseFunc(builder, next => app);
    }

    private static IAppBuilder UseFunc(IAppBuilder builder, Func<Func<IDictionary<string, object>, Task>, Func<IDictionary<string, object>, Task>> middleware)
    {
      return builder.Use((object)middleware, new object[0]);
    }
  }

  public class SampleModule : NancyModule
  {
    public SampleModule()
    {
      Get["/"] = _ => "Hello World!";
    }
  }
}

Install packages

Install-Package Microsoft.Owin.Host.HttpListener -Pre
Install-Package Microsoft.Owin.Hosting -pre
Install-Package Nancy.Hosting.Owin

Package Versions Used

Microsoft.Owin.Host.HttpListener version=0.18.0-alpha
Microsoft.Owin.Hosting version=0.18.0-alpha
Nancy version=0.15.3
Nancy.Hosting.Owin version=0.15.3
Owin version=1.0