OpenSD (Linux userspace driver for Valve's Steam Deck hardware)

OpenSD is a highly-configurable userspace driver for the Steam Deck 
written in simple and modern C++. 

It aims to be lighweight, very fastand provide a way to fully utilize
the hardware without running anybloated, insecure, closed-source, 
proprietary or anti-privacy malwarelike Steam.

Note: By default, OpenSD installs a udev rule that expects users to be
  members of the opensd group.
  Passing GROUP=input will modify the udev rule accordingly.