[gnome-session/wip/carlosg/x11-services-target] data: Add systemd target for X11 specific services

[Carlos Garnacho <carlosg src gnome org>]

commit dcc75eecc015a94069a6fe6907c1480a9cb01f75
Author: Carlos Garnacho <carlosg gnome org>
Date:   Thu Aug 15 13:10:49 2019 +0200

    data: Add systemd target for X11 specific services
    
    These services should be a direct dependency of a X11 session, but
    might be started or stopped as required on Wayland sessions. This
    unit is pretty barebones, and it is expected that any service that
    wants to be a dependency of it must set itself up as such.
    
    Also, make gnome-session-x11.target require this new target, so
    these X11 services are part of the X11 session initialization.

 data/gnome-session-x11-services.target | 3 +++
 data/gnome-session-x11.target          | 3 +++
 data/meson.build                       | 1 +
 3 files changed, 7 insertions(+)
---
diff --git a/data/gnome-session-x11-services.target b/data/gnome-session-x11-services.target
new file mode 100644
index 00000000..e9dea9b5
--- /dev/null
+++ b/data/gnome-session-x11-services.target
@@ -0,0 +1,3 @@
+[Unit]
+Description=GNOME session X11 services
+DefaultDependencies=no
diff --git a/data/gnome-session-x11.target b/data/gnome-session-x11.target
index 4a78c527..52ce6aff 100644
--- a/data/gnome-session-x11.target
+++ b/data/gnome-session-x11.target
@@ -12,6 +12,9 @@ PartOf=graphical-session.target
 RefuseManualStart=yes
 RefuseManualStop=yes
 
+# Pull in all X11-specific services the session might depend on
+Requires=gnome-session-x11-services.target
+
 # Always pull in the correct gnome-shell target
 BindsTo=gnome-shell-x11.target
 After=gnome-shell-x11.target
diff --git a/data/meson.build b/data/meson.build
index 38f865d8..ef35c494 100644
--- a/data/meson.build
+++ b/data/meson.build
@@ -119,6 +119,7 @@ if enable_systemd_session
                          'gnome-session-wayland.target',
                          'gnome-session-x11@.target',
                          'gnome-session-x11.target',
+                         'gnome-session-x11-services.target',
                          'gnome-session@.target',
                          'gnome-session.target',
                          'gnome-session-pre.target',