The dash itself is written in C++. It gets some of its data from python plugins, but a) not when it's searching for local files or applications, for which it us

The dash itself is written in C++. It gets some of its data from python plugins, but a) not when it's searching for local files or applications, for which it uses services compiled to native code and b) there's no reason python should be slow for stuff that isn't hugely computation intensive like, say, searching a list of filenames. Whatever Unity's problem is, the choice of implementation language is not it.