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This practically means you can't ship any runtimes, standard libraries, nor any big libraries with your app. Your app has to be just the business code and all the extras has to be stuff already on the watch. Crucially, size requirements like this doesn't mean you can't write slow python apps or whatever, so long as the watch ships with a python interpreter.

I suspect 10MB might be more friendly in the current day and age.

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It already comes with a standard library, but, since the drawing algos left a lot to be desired, my watchface ships with its own image format and rendering code to allow for handling of transparency and blending modes (since you can not only use the integrated render utilities, but simply draw directly to buffer with whatever you bring)

So all in all: it has been done.

That being said: you mention python, and I'm not sure where this is coming from. When in rome, you don't drag your favourite language throught the streets unless it is roman latin.

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