I don't know of anyone who's done it.
In the olden days it used to be something that the dealership could add after the sale, but I haven't heard of that in years.
When I test drove the base S Micra for a few weeks in the summer, I joked that this is how I installed air conditioning:
(From thread: Review notes: 2015 Micra S 5-speed extended test-drive - Darin's thoughts
You may laugh, but it's much better than nothing.
I suppose you could scavenge all the required parts from a wrecked Micra (rear hit), but it'd be a big job.
View my fuel log 2015 Micra S manual: 5.0 L/100 km ... 56.5 mpg (Imp) ... 20.0 km/L ... 47.0 mpg (US) ...