The postmarketOS developers (a Linux distribution for smartphones that is based on Alpine Linux, Musl and BusyBox) they made known Few days ago who have implemented the ability to use a smartwatch user interface based on the work of the AsteroidOS project
AsteroidOS, is a fully FOSS smartwatch user interface which is based on the Mer stack and is also used by Glacier. System components are created using developments from the OpenEmbedded project, which provides tools for creating GNU / Linux distributions for embedded systems.
Remember that the distribution postmarketOS was originally developed for smartphones and it provided the ability to use a variety of user interfaces, including KDE Plasma Mobile, Phosh, and Sxmo.
The enthusiasts have been developing postmarketOS ports for the LG G Watch and LG G Watch R smartwatches for several years That so far have been limited due to the ability to boot in command line mode, as custom skins for smartphones available on postmarketOS are too heavy and patchy for such devices.
The solution was to create a port of the Asteroid interface, specifically prepared for smart watches. The specified interface is developed by the AsteroidOS project and was originally used in combination with the Mer system environment. Asteroid includes a selection of essential smartwatch applications written in Qt 5 using QML and running in the asteroid launcher's shell environment, including a composite server based on the Wayland protocol.
This is the result of a collaboration between the Asteroid team and postmarketOS developer Bart Ribbers (Pure TryOut), which led to full UI integration.
A further step in this direction comes from developer Luca Weiss (z3ntu), who is reportedly working on a mainline Linux port for the LG G Watch R (codename »lenok«), which could become the first smartwatch. "True" Linux never heard of.
To interact with the team, AsteroidOS uses the libhybris layer, which is a layer for Glibc-based systems to provide Android-specific device drivers that run in user space and are linked to the Bionic system library to work on Glibc-based systems. With the help of libhybris, it has already been possible to use an unmodified Android binary driver for the Qualcomm GPU on the Mer platform.
This involves the use of Android platform drivers, but the postmarketOS-ready port is adapted to use the standard Linux driver stack. The port was prepared jointly with the developers of the AsteroidOS project.
It is observed that the appearance of the Asteroid port in postmarketOS will allow the platform to be fully compatible with smart watches and start migrating to new devices. Replacing the firmware with postmarketOS can be an interesting solution to continue the life of old smartwatches, for which the manufacturer's support time has already expired.
Recall that the objective of the postmarketOS project is to provide the possibility of using a GNU / Linux distribution on a smart device (its main focus is smartphones), in addition to being independent of the support life cycle of the official firmware and not linked to the standard solutions of the main manufacturers of the industry that mark the vector of development.
The postmarket environmentOS is unified as much as possible and brings together all the specific components of the device in a separate package, all other packages are identical for all devices and are based on standard Alpine Linux packages which is chosen as one of the most compact and secure distributions, while for the Linux kernel part this is compile from the linux-sunxi project.
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