What platform(s) would the simulator support? Just GNU/Linux? Even that is quite different from actual Android in some ways, e.g. glibc instead of bionic. It's

What platform(s) would the simulator support? Just GNU/Linux? Even that is quite different from actual Android in some ways, e.g. glibc instead of bionic. It's easy by comparison for Apple to provide a simulator, because the simulator only has to run on Mac OS X, which basically shares everything below the UI toolkit with iOS.