Pinetime has become part of the standard zephyr distribution!
These days you can install zephyr and execute a pinetime sample!
west build -p -b pinetime_devkit0 samples/boards/pine64_pinetime
https://docs.zephyrproject.org/latest/getting_started/index.html
the documentation describes an installation process under Ubuntu/macOS/Windows
The kit should work alongside the zephyr installation. Just get a copy of the “app” directory.
<work> /app
├──/zephyr
├──.....
the app-directory contains the drivers and source code and(!) modified board definitions.
The development has been done on a virtual linux machine. For testing bluetooth functionality, I have used linux as well. In this manual you’ll find a procedure to communicate to the device from a linux box. Updating the firmware wireless? Possible from a linux box!
Suppose you want to measure how many steps employees do a day? You could readout everything using a linux box, and handle the data using all the available tools of the box.
TIP : sometimes you run into trouble compiling: removing the build directory can help in that case