Hrumph ... should just port it to shoes[1] and be done with it. Just kidding, just kidding. But really, why can't we have an HTML5 layout engine for native applications?
Also, +1 for the resurgence[1] of tk for lightweight GUI apps : -) Who needs native anything, when THE tool kit is installed everywhere python is (which is also everywhere).
1: http://www.rstudio.com/ide/ 2: http://www.brackets.io/ 3: http://www.lighttable.com/
Although we mostly get away with it in today's strange world of reinventing the wheel inside a browser, it's still a hack.
(I'm not sure at all)