While I like idea I don't completely understand it. What 'runtime' is actually supposed to be? What if I need two runtimes? I will probably need to bundle one of them with the app. E.g. if I write a C++ Qt application I will use Qt runtime, if I write command line Python application I will use Python runtime, but if I write Qt application in Python I will need to bundle either Python or Qt with my app, correct?

Also, is there support for applications without any runtime?