ArduinoCore-avr VS meta-raspberrypi

Gotta pick some project that matters to you and do it. Putting Python code into production with multi-person teams is outright maddening, but for the individual who wants to put their skills on wheels, Python is a great place to start.

Another fun thing to try is

https://www.arduino.cc/

I got started with that buying an Arduino and a breadboard and a handful of 74xx logic chips and I started writing Arduino programs that would generate inputs to the 74xx chips and verify the expected outputs and thus taught myself C coding for the Arduino and how to make circuits with discrete logic at the same time.

Check out existing implementations like Arduino: https://github.com/arduino/ArduinoCore-avr/blob/master/libraries/SPI/src/SPI.h

4. https://github.com/arduino/ArduinoCore-avr/blob/eabd762a1edcf076877b7bec28b7f99099141473/cores/arduino/main.cpp#L46

you can always just use an ide but i use this one on my old chrome book https://www.arduino.cc/

You'll also need the avr C library and the Arduino library, and possibly a Makefile or similar to corral the compilation process

Ya for $25 you either want 4-5 clones, or support the official Italian Arduino makers as thanks for making the entire ecosystem possible by buying one of their own boards from https://www.arduino.cc/

It depends what exactly is she into. For electronics you can check out arduino. They sell full kits with everything you need - some components like leds, breadboard so you can create circuits without soldering and a small 8bit computer to control everything with. AFAIK they also sell kits specifically for education starting with middle school.

They are in via Arduino. ;-)

How do you figure Pis have bad integration with Yocto?

https://github.com/agherzan/meta-raspberrypi

For what it's worth, the entire Pi lineup is also well supported by Buildroot. In-tree, no less.

Embedded linux exactly. Major OEMs are using yocto. Check https://www.yoctoproject.org/

Been there. You don't want alpine or debian. Good gpos, but what you want is Yocto, which will let you build exactly and only what you need piece by piece including only the kernel modules for your hardware, the exact applications you use and no extras, and with a little extra tweaking, you can wire in Mender for ota updates and the ability to push custom images to clients that need specialization, or even fully unlocked images for customers that need it, plus if you're using an SD card, you can send users recovery drives instead of shipping full devices or let them build their own images without your proprietary code

I second Yocto. It's the kernel in use by the OpenBMC project

One last "option" is yocto but tis is not good for desktop, but it can be a fun project.