Startup.cs

using Microsoft.AspNet.Builder;

namespace KWebStartup
{
    public class Startup
    {
        public void Configure(IBuilder app)
        {
            // Doesn't require a dependency on anything.
            // It's just an extension method on Func<AppFunc, AppFunc>.
            // The could live in core Nancy.
            app.UseOwin(owin => owin.UseNancy());
            
            // This requires a dependency on Microsoft.AspNet.HttpAbstractions.
            // It's an extension method on IBuilder.
            // This will probably live in a Nancy.Owin.Builder package.
            app.UseNancy();
        }       
    }
}