RootpathProvider for Nancy when Hosting is separated

AssemblyExtensions.cs

 public static class AssemblyExtensions
    {
        public static string GetExecutionPath()
        {
            var codeBase = Assembly.GetExecutingAssembly().CodeBase;
            var uri = new Uri(codeBase);
            var path = uri.LocalPath;
            var root = Path.GetDirectoryName(path);
            return root;
        }
    }

Bootstrapper.cs

    protected override IRootPathProvider RootPathProvider
        {
            get { return new MyRootPathProvider(); }
        }

MyRootPathProvider.cs

 public class VQRootPathProvider : IRootPathProvider
    {
        public string GetRootPath()
        {
            return AssemblyExtensions.GetExecutionPath();
        }
    }