It allows to start a X server inside a slapos instance.
Provide an hook to do a screenshot of the X session.

Use the TMPDIR environment variable to define the location of files created by
xorg.

It allows to cleanly run X application in any slapos instance.

It allows to directly control firefox from supervisord if needed.

Use slapos provided libraries by defined include and rpath

I just lost time because error was not explicit nor helpful.

Mother of god, why did I do that monstrosity?