services: gdm: Make dependencies explicit.

This commit removes the remaining implicit dependencies that the GDM
service had on the GNOME Desktop service.

* gnu/services/xorg.scm (gdm-configuration): Add a gnome-shell-assets
field for specifying any icons or fonts that the GNOME Shell theme
needs.
(gdm-shepherd-service): Remove environment variables pointing to
'/run/current-system' and set XDG_DATA_DIRS so that it points to
'gnome-shell' and its assets.
(gdm-service-type): Extend 'profile-service-type' to ensure that
necessary fonts are installed in the system profile.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

0 files changed, 0 insertions, 0 deletions