If a company pays for your work time not work products (many contracts work like this) they have the full right to expect that during this work time you do the work explicitly ordered by them. It’s not only the law - it’s common sense.

With stuff like Overleaf and plugins for modern IDEs, honestly I can’t say LaTeX is a bad experience. It does what it should.

The application seems very cute and handy and it still might be very useful in a lot of specific use cases. Just keep in mind that it might not be production ready for you.

Yet, as some comments already stated what you do is basically study a subclass of multi-state 2D CAs where specific states from the finite state set have a specific meaning associated.

In general a CA is defined as a dynamical system governed by a local rule operating on the neighborhood configuration and yielding a new state. State set is typically finite. But the actual structure of the states can be anything you like. A valid state can be a tuple of a form (visible state, number of neighbors, sum of neighbors degrees, …). As the maximum neighborhood size is finite and the visible cell states are finite - there is a finite number of such tuples which constitute the state set on which a CA can operate.

Summing up - you are studying CAs in which your multi-state setup has some implied meaning. Still cool and interesting.

C compatibility / extension compatibility - nope. First, it is an issue of limited resources. Add more devs to pypy team and compatibility bugs gets fixed. Second, aren’t people writing C extensions due to python being slow? Make python fast - as pypy - and for some cases native code won’t be that crucial.

So I don’t see a real issue with pypy that could not be solved by simply moving all the dev efforts from CPython.

So are there political, personal or business issues?

So why not move all the resources from CPython to close the gap with features faster and replace CPython entirely?

Since this is not happening I expect there to be serious reasons, but I fail to see them. This is what I ask for.