To allow X server to be started by shepherd, without resorting to login
managers, the determine-vty procedure has to be adjusted. Shepherd would
set /proc/self/fd/0 to /dev/null when starting the service, so the TTY
has to be extracted by other means.
* gnu/services/xorg.scm (xorg-start-command-xinit): Use XDG_VTNR
environment variable to determine VTY.
Closes: #52
Change-Id: I390217e292f6534b31d18083c9a49c009a836aad
Signed-off-by: 宋文武 <iyzsong@member.fsf.org>
eaa0987a30